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Mercury 250 (3.0L EFI) (0T801000 THRU 1B417701) Outboard Motor Parts Diagram & Catalog – Free PDF Download

by JLM Marine 30 Apr 2025 0 Comments
Mercury 250 (3.0L EFI) Outboard Motor Parts Diagram & Catalog – Free PDF Download

Accessories

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Below is the parts list for Mercury 250 (3.0L EFI) Accessories:

Mercury 250 (3.0L EFI) Accessories Diagram
Position No. Part Name OEM Number Supersedes
0 FLUSH COUPLING 22-852400 56-820386A55
0 DECK FILL KIT, Oil 15969A3
0 DIODE ASSEMBLY (DUAL ENGINE) 812497A2
0 FLUSHING ATTACHMENT 44357Q2
0 HOSE ASSEMBLY, Fuel 32-858610A31 32-858610A10, 32-16789A18
0 HOSE ASSEMBLY, Fuel (12 Feet) Comment: (NO FITTINGS) 32-877683Q12 32-858623Q12, 32-858623A12, 32-822379A12, 32-819380A12, FA599752, FS409752, 32-819380A 3, F216752, FA409752, F289752, FA178752, FA216752, FA284752, FA289752, FS409952 (NO FITTINGS)
0 SWITCH/LANYARD KIT 87-19674Q2
0 MERCATHODE KIT 88334A2
0 HOSE EXTENSION KIT 41729A3
0 NOT SOLD SEPARATE, Rigging Hose Kit Comment: (SEE PARTS BULLETIN 99-4) NSS
0 RESERVOIR KIT, Oil 15943A1
0 TRIM REDUCER KIT 858915A1

Attenuator/Flywheel Cover

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Below is the parts list for Mercury 250 (3.0L EFI) Attenuator/Flywheel Cover:

Mercury 250 (3.0L EFI) Attenuator/Flywheel Cover Diagram
Position No. Part Name OEM Number Supersedes
1 COVER, Flywheel Comment: SN# 0T979999 & Below 892854T01 880009T02, 880009T 1 SN# 0T979999 & Below
1 COVER, Flywheel Comment: SN# 0T980000 & Up 892854T01 880009T02, 880009T 1 SN# 0T980000 & Up
2 GROMMET, (.88 Inside Diameter) 25-13467
3 GROMMET Comment: SN# 0T979999 & Below 25-8M0153609
3 GROMMET Comment: SN# 0T980000 & Up 25-8M0153609
4 PLUG Comment: SN# 0T979999 & Below 19-89219001
4 PLUG Comment: SN# 0T980000 & Up 19-89219001
5 ATTENUATOR ASSEMBLY 881909T3
6 BUSHING 23-856954
7 GROMMET 25-8M0190980
8 SEAL 882767
9 GROMMET 25-20116
10 CLIP 54-23567
11 WASHER, (.265 x .750 x .048) Stainless Steel 12-65567
12 SCREW, (M6 x 25) 10-82130025
13 DECAL, Caution-Start in Gear Comment: (Start In Gear) 37-881865 37-825064 (Start In Gear)
14 SCREW, (#10-16 x .750) 10-69570

Bottom Cowl

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Below is the parts list for Mercury 250 (3.0L EFI) Bottom Cowl:

Mercury 250 (3.0L EFI) Bottom Cowl Diagram
Position No. Part Name OEM Number Supersedes
1 BOTTOM COWL, Port (Port) 113-850302A1
2 PLUG 854367001 854367
3 BOTTOM COWL, Starboard (Starboard) 113-850301A1
4 SEAL, (44.00 Inches) 8M0109218
5 SCREW, (M6 x 40) 10-82130040
6 SCREW, (M6 x 75) 10-824868
7 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
8 FRONT HANDLE 8M0053903 850684F 1
9 BUSHING 23-335891
10 O-RING, (.614 x .070) 25-48462
11 PAWL 8219423
12 WASHER, (.281 x .734 x .063) 12-69057
13 NUT, (M6) Stainless Steel 11-401366
14 SCREW, (#10-16 x .625) 10-8214281
15 CLIP 54-822873
16 SWITCH, Trim Comment: SN# 1B226999 & Below 87-8M0235191
16 SWITCH, Trim Comment: SN# 1B227000 & Up 87-8M0235191
17 RIGGING KIT (UPPER) 8M8027677 54-859359A 2
18 NOT SOLD SEPARATE, Clamp-Lower NSS
19 SCREW, (M6 x 12) 10-82130012
20 NOT SOLD SEPARATE, Strap NSS
21 FOAM 859343
22 TIE STRAP, (11.750 Inches) 54-850181
23 HANDLE, Cowl 852361T1
24 WAVE WASHER 13-29402

Coil Plate

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Below is the parts list for Mercury 250 (3.0L EFI) Coil Plate:

Mercury 250 (3.0L EFI) Coil Plate Diagram
Position No. Part Name OEM Number Supersedes
1 PLATE, Coil Mounting 850295T2
2 COIL KIT 300-8M0077471 300-879984T01, 339-879984A 1, 339-879984T00
3 SCREW, (M6 x 30) 10-82129130
4 CABLE SET 84-881908T 84-821945T74, 84-821945T65
5 CLIP 54-828991T 54-828991
6 SPARK PLUG 33-941
7 HARNESS ASSEMBLY, Coil Comment: SN# 1B226999 & Below 84-882757T1
7 HARNESS ASSEMBLY, Coil Comment: SN# 1B227000 & Up 84-882757T02
- HARNESS ASSEMBLY, 5 Pin 879346A51 84-854839T02
8 CABLE ASSEMBLY, Braided 84-858414A1
9 SCREW, (M6 x 10) 10-82129110
10 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
11 GROMMET 25-833155
12 WASHER 12-4002318
13 BUSHING 23-8502341
14 SCREW, (M8 x 35) 10-81893435
15 SENSOR KIT, (0-50 PSI) 71-8M0157742
16 FITTING Comment: SN# 0T979999 & Below 22-8M0207782
16 FITTING Comment: SN# 0T980000 & Up 22-8M0207782
17 CLIP, (.865) 54-883066
18 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
19 TUBING, (52.00 Inches Bulk) (Cut to 18 Inches) 32-85978571
20 WASHER 12-36001

Crankshaft, Pistons and Connecting Rods

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Below is the parts list for Mercury 250 (3.0L EFI) Crankshaft, Pistons and Connecting Rods:

Mercury 250 (3.0L EFI) Crankshaft, Pistons and Connecting Rods Diagram
Position No. Part Name OEM Number Supersedes
1 CRANKSHAFT ASSEMBLY 482-9784A11
2 NOT SOLD SEPARATE, Wear Sleeve NSS
3 BEARING, Ball (Lower) 30-67923T
4 RING 53-67446
5 RING Comment: SN# 0T979999 & Below 39-843198T01 39-843198001, 39-816106 SN# 0T979999 & Below
5 RING, Seal Comment: SN# 0T980000 & Up 39-843198T01 39-843198001, 39-816106 SN# 0T980000 & Up
6 KEY, Woodruff 28-91800
7 O-RING, (.859 x .139) 25-35126
8 RACE ASSEMBLY 31-88270A02
9 NOT SOLD SEPARATE, Needle Roller NSS
10 PISTON Comment: (Starboard-Standard) 700-858295T14 700-858295T 1 (Starboard-Standard)
10 PISTON Comment: (Port-Standard) 700-858294T14 700-858294T 1 (Port-Standard)
10 PISTON ASSEMBLY Comment: (Starboard - .015 oversize) 700-878572A2
10 PISTON ASSEMBLY Comment: (Port - .015 oversize) 700-878571A2
10 PISTON ASSEMBLY Comment: (Starboard - .030 oversize) 700-878574A2
10 PISTON ASSEMBLY Comment: (Port - .030 oversize) 700-878573A2
11 RING 40-841202
12 RING SET, Piston Comment: (Standard) 39-858772A12
12 RING SET, Piston Comment: (.015 oversize) 39-875252A12 39-856939A12, 39-826293A12 (.015 oversize)
12 RING SET, Piston Comment: (.030 oversize) 39-875257A12 39-826297A12, 39-856940A12 (.030 oversize)
13 NOT SOLD SEPARATE, Piston Ring-Lower NSS
14 CONNECTING ROD ASSEMBLY Comment: SN# 1B105071 & Below 600-8M0125869
14 CONNECTING ROD ASSEMBLY Comment: SN# 1B105072 & Up 600-8M0125869
15 SCREW, (.375-24 x 1.250) 10-94320
16 BEARING/CAGE KIT 31-844338A01 31-43012A04
17 NOT SOLD SEPARATE, Needle Roller Bearing NSS
18 THRUST WASHER 12-88263
19 BEARING, Needle 29-8M0204715
20 BEARING ASSEMBLY (Upper) 31-816773A2
21 SEAL 26-859093 26-815449
22 O-RING, (1.989 x .070) 25-823683 25-64067
- GASKET SET, Powerhead 27-832934A00
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Cyliner Block and End Cap

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Below is the parts list for Mercury 250 (3.0L EFI) Cyliner Block and End Cap:

Mercury 250 (3.0L EFI) Cyliner Block and End Cap Diagram
Position No. Part Name OEM Number Supersedes
1 CYLINDER BLOCK Comment: (225) 885-899162A06 885-9811T92 (225)
1 CYLINDER BLOCK Comment: (200/3L Work) 885-899162A05 885-9811T91 (200/3L Work)
1 CYLINDER BLOCK Comment: (250) 885-899162A07 885-9811T93 (250)
2 SCREW, (M8 x 40) 10-81893440
3 BRACKET 8M0111325
4 STUD, (M10 x 1.5 x 64) 16-903509
5 STUD, (M10 x 1.5 x 155) 16-8154431
6 DEFLECTOR 8248577
7 CHECK VALVE 21-8781051
8 PIN 17-8M0036405 17-67296
9 PIN, Dowel - Without Hole (.375 x .625) 17-43044
10 PLUG Comment: SN# 0T979999 & Below 19-850309001 19-850309 SN# 0T979999 & Below
10 PLUG, Stop Comment: SN# 0T980000 & Up 19-850309001 19-850309 SN# 0T980000 & Up
11 SCREW, (M8 x 35) 10-81893435
12 SCREW, (M10 x 80) 10-82446180
13 PIN, Dowel (.250 x .625) 17-63779
14 SENSOR ASSEMBLY, Temperature 13536A13
15 PIN 17-8405101
16 RETAINER 8588641
17 WASHER, (.406 x .750 x .105) Stainless Steel 12-8M0214963
18 NUT, (M10) Stainless Steel 11-4013610
19 SENSOR 8M0082988 8M0030022, 828358 2
20 SCREW, (M5 x 16) Stainless Steel 10-40011107
21 END CAP ASSEMBLY 1171-9787A4
22 O-RING, (3.237 x .103) 25-62700
23 SEAL 26-8308981
24 SCREW, (M6 x 20) 10-82130020
25 PLATE ASSEMBLY 857186T02 857186A 1
26 MOUNT 23-855729
27 SCREW, (M10 x 45) 10-82130145
28 SCREW, (M6 x 12) Comment: (Flange Head) 10-82130012
28 SCREW, (M6 x 10) Comment: (Socket Head) 10-82494810
29 GROMMET Comment: SN# 0T979999 & Below 25-19565002
29 GROMMET Comment: SN# 0T980000 & Up 25-19565002
30 WASHER 12-855725
31 RETAINER 137151
32 J CLIP 54-858951
33 SCREW, (M6 x 12) 10-82130012
34 SEAL 818574
35 CYLINDER HEAD ASSEMBLY Comment: (200/225/250) 812851A27 812851A22, 812851A19 (200/225/250)
35 CYLINDER HEAD Comment: (3L Work) 812851A26 812851A21, 812851A18 (3L Work)
36 SEAL 884391
37 THERMOSTAT, 54°C (130°F) (130 Degrees) Comment: SN# 0T947111 & Below 8M0057307 885599004, 885599003, 885599 1 SN# 0T947111 & Below
37 THERMOSTAT, 54 Degree C/130 Degree F Comment: SN# 0T947112 & Up 8M0057307 885599004, 885599003, 885599 1 SN# 0T947112 & Up
38 GASKET 27-8503181
39 COVER, Thermostat 8M0039357 887926
40 SCREW, (M6 x 25) 10-82130025
41 SCREW, (M8 x 50) 10-8M0045380 10-891570050, 10-859096, 10-824460 50, 10-891570
42 SENSOR ASSEMBLY 8M0148668
43 O-RING, (.351 x .072) 25-896699 25-888814
44 SCREW, (M8 x 14) 10-81893414
45 FITTING, Elbow 45 Degree (1.25) 22-782792
46 CLAMP (Use where applicable) 8266241
47 SCREW, (M6 x 12) (Use where applicable) 10-82130012
48 LEVER, TPI 8583561
49 SCREW, (M6 x 25) 10-82130025
50 BUSHING 23-856954
51 GROMMET 25-8M0190980
52 WASHER, (.265 x .750 x .048) Stainless Steel 12-65567
53 SCREW, (M5 x 45) Stainless Steel 10-40011113
54 INDICATOR, Throttle Position 8M6005165
55 LINK 8M0084743
56 CLAMP 54-858902
57 COVER 8582261
58 BRACKET 8544862
59 CLAMP, (25.6 mm) 54-855228 54-888988014
60 FITTING 22-8533394
61 HOSE (Starboard) 32-8404461
62 HOSE (Port) 32-8404462
63 SCREW, (M8 x 20) 10-81893420
64 SENSOR ASSEMBLY, Knock Comment: (200/3.0L Work) 8M6003194 878187 (200/3.0L Work)
65 STUD Comment: (200/3.0L Work) 16-882781
66 NUT, (M10) Brass/Nickel Plated Comment: (200/3.0L Work) 11-826292
- GASKET SET, Powerhead 27-832934A00
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Driveshaft Housing and Exhaust Tube

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Below is the parts list for Mercury 250 (3.0L EFI) Driveshaft Housing and Exhaust Tube:

Mercury 250 (3.0L EFI) Driveshaft Housing and Exhaust Tube Diagram
Position No. Part Name OEM Number Supersedes
1 HOUSING ASSEMBLY, Driveshaft Comment: (Long) SN# 1B226999 & Below 3518-832937A06 3518-832937A05, 3518-832937A 3, 3518-832937A 4 (Long) SN# 1B226999 & Below
1 HOUSING ASSEMBLY, Driveshaft Comment: (Long) SN# 1B227000 & Up 3518-832937A06 3518-832937A05, 3518-832937A 3, 3518-832937A 4 (Long) SN# 1B227000 & Up
1 HOUSING ASSEMBLY, Driveshaft Comment: (X-Long/XX-Long) 3519-832938A06 3519-832938A 5 (X-Long/XX-Long)
2 STUD, (M12 x 52) Comment: (Long/X-Long) 16-8M0008031 16-856983, 16-822257 (Long/X-Long)
3 SCREW, (M12 x 35 MM) Comment: (Long/X-Long) 10-8M0102995 10-8M0071178, 10-885528 35 (Long/X-Long)
4 GROMMET 25-8331231
5 WASHER, (.500 x .810 x .090) Stainless Steel 12-856982
6 NUT, (M12 x 1.75) 11-896895 11-857008
7 PLUG 19-64649
8 SCREW, (M14 x 178) Comment: SN# 1B226999 & Below 10-898834 10-815431002, 10-815431 SN# 1B226999 & Below
8 BOLT, (M14 x 178) Comment: SN# 1B227000 & Up 10-898834 10-815431002, 10-815431 SN# 1B227000 & Up
9 CABLE ASSEMBLY, Ground 88238A10
10 WASHER, (.562 x 2.00 x .125) 12-815432
11 WASHER, (1.25 x 2.00 x .19) 12-8154331
12 MOUNT 8137711
13 WASHER 12-825190
14 NUT 11-896602 11-815434, 11-815434002
15 CLAMP 8186442
16 SCREW, (M8 x 35) 10-81893435
17 LOCKWASHER, Internal Tooth 13-72521
18 COVER, Black 8M0001136 818645F 1
19 SCREW, (#10-16 x .440) 10-69079
20 SEAL 8329321
21 TUBE ASSEMBLY, Exhaust 833116A4
22 STRAINER 35-8M0026113 35-852405 2
23 SCREW, (M8 x 35) 10-81893435
24 TUBE, Water Comment: (Long) 32-8M0042785 32-832941 7 (Long)
24 TUBE, Water Comment: (X-Long) 32-8M0042786 32-832941 8 (X-Long)
24 TUBE, Water Comment: (XX-Long) 32-8M0042787 32-832941 9 (XX-Long)
25 SEAL Comment: SN# 0T970000 & Below 832940001 832940 SN# 0T970000 & Below
25 SEAL Comment: SN# 0T980000 & Up 832940001 832940 SN# 0T980000 & Up
26 CLAMP 8329391
27 SCREW, (.250-20 x .500) Stainless Steel 10-41508
28 SPACER Comment: (XX-Long) 8M0105088 8M0071622, 880647T04, 823979T 1, 880647T02, 880647T (XX-Long)
29 PIN, Dowel - Without Hole (.375 x .625) Comment: (XX-Long) 17-43044
30 STUD, (M12 x 179) Comment: (XX-Long) 16-8M0008047 16-857009, 16-824117 (XX-Long)
31 SCREW, (M12 x 160) Comment: (XX-Long) 10-857137
32 SCREW, (M8 x 35) 10-81893435

Dual Engine Tie Bar Kit

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Below is the parts list for Mercury 250 (3.0L EFI) Dual Engine Tie Bar Kit:

Mercury 250 (3.0L EFI) Dual Engine Tie Bar Kit Diagram
Position No. Part Name OEM Number Supersedes
- EXTENSION KIT, Dual Engine 92876A9
1 TUBE ASSEMBLY 71565A2
2 O-RING, (.614 x .070) 25-48462
3 MOUNT 41055
4 TAB WASHER 14-42100
5 NUT, (.875-14) 11-8M0041651 11-37984
6 TAB WASHER 88404
7 SCREW, (.250-28 x 1.250) 10-38601
8 BRACKET 17729A1
9 SCREW, (.312-24 x 1.250) 10-62055
10 TAB WASHER 17728
11 SCREW, (.375-24 x 1.38) 10-140001
12 NUT, (.375-24) Stainless Steel 11-8M0204726
13 STEERING EYE 8M0026167 8M0005848, 97933 1
14 SLEEVE, (1.625) 23-23651
15 TUBING, (4.00 Inches) 97931
16 COUPLER, (15.00 Inches) 8M0026098 814951 3
17 NUT, (.562-18) 11-42099
18 COUPLING 22-821169
19 WASHER, (.406 x .734 x .063) Stainless Steel Comment: (.734 Outside Diameter) 12-34931
19 WASHER, (.390 x .625 x .062) Stainless Steel Comment: (.625 Outside Diameter) 12-37828
20 SCREW, (.375-24 x 1.5) 10-94319

Exhaust Plate

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Below is the parts list for Mercury 250 (3.0L EFI) Exhaust Plate:

Mercury 250 (3.0L EFI) Exhaust Plate Diagram
Position No. Part Name OEM Number Supersedes
1 PLATE ASSEMBLY, Exhaust 832935A17 832935A16, 832935A15, 832935A14
2 GASKET 27-8329335
3 GASKET (Lower) 27-8329344
4 SEAL 8M0043157 823805 1
5 FITTING, Check Valve 22-8320761
6 PLUG, Pipe (.375-18) Brass 22-8M0180565
7 CHECK VALVE ASSEMBLY, Drain 21-817519A1
8 PIN, Dowel - Without Hole (.375 x .625) 17-43044
9 GROMMET 25-822002
10 PLUG 19-48323
11 COVER ASSEMBLY 65663A2
12 SCREW, (M8 x 35) 10-81893435
13 CARRIER 814190
14 GROMMET 25-814191
15 POPPET 814189
16 SPRING, (Black) 24-64878
17 PLATE ASSEMBLY 65664A1
18 GASKET 27-88907003
19 DIAPHRAGM 648771
20 WASHER 12-76451
21 SCREW, (#10-16 x .750) 10-69570
22 SCREW, (M8 x 35) 10-81893435
23 BOOT KIT, Idle Exhaust Comment: (Includes ref.'s 44 & 45) 850306A04 850306 1 (Includes ref.'s 44 & 45)
24 CLAMP, (28.6) 54-850896
25 FITTING, Tell-Tale 22-8M0077650 821904
26 PLUG 19-821908
27 WASHER 12-821915
28 FITTING 22-8596001
29 CHECK VALVE 8219631
30 O-RING, (.299 x .103) 25-30641
31 NUT, (M6) Stainless Steel 11-401386
32 SHIFT LINK Comment: SN# 0T979999 & Below 883142A03 883142A 2 SN# 0T979999 & Below
32 SHIFT LINK KIT Comment: SN# 0T980000 & Up 883142A03 883142A 2 SN# 0T980000 & Up
33 SLIDE 8539683
34 NUT, (M6) Stainless Steel 11-401386
35 BUSHING 23-42994
36 SHIFT SHAFT, Upper Comment: (Long) 8M0036408 896669001, 824070 1 (Long)
36 SHIFT SHAFT, Upper Comment: (X-Long) 8M0187153
36 SHIFT SHAFT, Upper Comment: (XX-Long) 8240703
37 BUSHING 23-48237
38 COUPLING 43585
39 FLUSH HOSE KIT (Inlet) 32-859626A1
40 GROMMET Comment: SN# 0T979999 & Below 25-12602002
40 GROMMET Comment: SN# 0T980000 & Up 25-12602002
41 WASHER 12-35459
42 HOSE, (57.00 Inches Bulk) (Cut to 3 Inches) 32-8M0108355 32-8M0047428, 32-830756109, 32-99127109, 32-877821
43 FITTING, Straight 22-858855
44 PLATE 888910
45 SCREW, (M5 x 12) 10-82239312
- GASKET SET, Powerhead 27-832934A00
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Flywheel/Alternator

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Below is the parts list for Mercury 250 (3.0L EFI) Flywheel/Alternator:

Mercury 250 (3.0L EFI) Flywheel/Alternator Diagram
Position No. Part Name OEM Number Supersedes
1 ALTERNATOR 8M6013461
2 SPRING 24-8523742
3 ARM TENSIONER ASSEMBLY 856815T2
4 WASHER 12-4002320
5 BUSHING 23-8568941
6 STUD, (M10 x 85) 16-8M0034457 16-856900
7 NUT, (M10) Brass/Nickel Plated 11-826292
8 PULLEY ASSEMBLY 8M6005030
9 SCREW, (M10 x 35) Hex Flange - Stainless Steel 10-4010835
10 BELT 57-828507Q11 57-828507 11
11 FLYWHEEL 283-859619T1
12 NUT, (M16) 11-42979
13 WASHER, (.641 x 1.250 x .190) 12-33001
14 PLUG, Yellow 19-45907
15 NUT, (M6) Stainless Steel 11-401386
16 CABLE ASSEMBLY 84-856583A5
17 WASHER 12-4002319
18 SCREW, (M10 x 50) 10-82130150
19 SCREW, (M6 x 12) 10-82130012

Fuel Management

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Below is the parts list for Mercury 250 (3.0L EFI) Fuel Management:

Mercury 250 (3.0L EFI) Fuel Management Diagram
Position No. Part Name OEM Number Supersedes
- MANAGEMENT ASSEMBLY, Fuel 880004T08 880004T07
1 ADAPTOR PLATE 883951T1
2 GASKET 27-804680
3 REED BLOCK 828623T4
4 SCREW, (M6) 10-8555252
5 BUSHING 23-855364
6 GROMMET Comment: SN# 0T979999 & Below 25-855362001 25-855362 SN# 0T979999 & Below
6 GROMMET Comment: SN# 0T980000 & Up 25-855362001 25-855362 SN# 0T980000 & Up
7 SCREW, (M8 x 35) 10-81893435
8 WASHER, (.344 x 1.00 x .063) Stainless Steel 12-817274 12-817274 1
9 SCREW, (M8 x 30) 10-81893430
10 PLENUM KIT, Air 883950T1
11 GASKET Comment: SN# 0T979999 & Below 27-804679004 27-804679 3 SN# 0T979999 & Below
11 GASKET Comment: SN# 0T980000 & Up 27-804679004 27-804679 3 SN# 0T980000 & Up
12 SCREW, (M6 x 16) 10-1993716
13 BRACKET, MAP Sensor 884522 804873, 841095
14 SENSOR, MAP 854445
15 SENSOR ASSEMBLY 8M0148668
16 O-RING, (.351 x .072) 25-896699 25-888814
17 THROTTLE BODY KIT 883949T1
18 SCREW, (M6 x 40) 10-82130040
19 O-RING 25-855426
20 LEVER ASSEMBLY, Throttle 858851A03
21 ROLLER 8M0072162 889610, 840968
22 WASHER, (.203 x .500 x .032) 12-8M0204666
23 NUT, Stainless Steel 8-32,11-826709104 11-846115
24 SCREW, Special 10-889354
25 WASHER, Cupped 12-881991
26 WASHER, Spool 12-881992
27 LOCKWASHER, External 10,13-69432
28 CAM ASSEMBLY Comment: SN# 0T979999 & Below 858353A08 858353A 3 SN# 0T979999 & Below
28 CAM ASSEMBLY Comment: SN# 0T980000 & Up 858353A08 858353A 3 SN# 0T980000 & Up
29 BALL, Threaded 8235694
30 BUSHING 23-8M0215006
31 BUSHING 23-8807371
32 SCREW, (M8 x 55) Stainless Steel 10-40011155
33 WASHER, (.330 x .750 x .060) Stainless Steel 12-56720
34 FITTING 22-993211
35 PUMP ASSEMBLY 8M0185615
36 BRACKET 883926
37 SCREW, (M4 x 16) 10-883942
38 SCREW, (M6 x 25) 10-82130025
39 WASHER 12-8M0214930
40 GROMMET 25-8M0190980
41 BUSHING 23-822003
42 FUEL RAIL 883952T1
43 RETAINER 8833821
44 SCREW, (#8-32 x .380) 10-840118
45 INJECTOR ASSEMBLY Comment: SN# 0T979999 & Below 840481T01 840481001, 840481, 883381 SN# 0T979999 & Below
45 INJECTOR ASSEMBLY Comment: SN# 0T980000 & Up 840481T01 840481001, 840481, 883381 SN# 0T980000 & Up
46 O-RING KIT 25-895239A01
47 TUBE 8832151
48 O-RING 25-883355
49 FITTING 22-883940
50 SCREW, (#10-24 x .375) 10-883376
51 RETAINER 883382
52 O-RING, (.239 x .070) 25-20385
53 HARNESS ASSEMBLY, Fuel Rail 84-880745T1
54 CLAMP 54-883941
55 J CLIP (Use where Applicable) 54-8M0024808
56 SCREW, (M6 x 40) 10-82130040
- GASKET SET, Powerhead 27-832934A00
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Fuel Pump

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Below is the parts list for Mercury 250 (3.0L EFI) Fuel Pump:

Mercury 250 (3.0L EFI) Fuel Pump Diagram
Position No. Part Name OEM Number Supersedes
- PUMP KIT, Fuel 14360A78
1 NOT SOLD SEPARATE, Fuel Pump NSS
- DIAPHRAGM KIT 21-857005A1
2 NOT SOLD SEPARATE, Disc Check Valve NSS
3 NOT SOLD SEPARATE, Diaphragm NSS
4 NOT SOLD SEPARATE, Retainer NSS
5 NOT SOLD SEPARATE, Spring NSS
6 NOT SOLD SEPARATE, Cap NSS
7 NOT SOLD SEPARATE, Spring NSS
8 NOT SOLD SEPARATE, Cap NSS
9 NOT SOLD SEPARATE, Diaphragm NSS
10 NOT SOLD SEPARATE, Gasket-Boost NSS
11 NOT SOLD SEPARATE, Gasket-Pulse NSS
12 GASKET 27-8M0204705
13 PLATE 987752
14 FITTING, Straight (.125-27) 22-16604
15 SCREW, (M5 x 40), Fuel Pump 10-82104540
16 SCREW, (M6 x 50), Pump to Crankcase 10-82130050
17 BASE 144303
18 ELBOW, To Crankcase 22-856842
19 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
20 HOSE, Pulse Line 32-8M0064783 32-858800
21 CONNECTOR 22-822769
22 HOSE 32-8M0064778 32-856817 2
23 NOT SOLD SEPARATE, Cap NSS
24 HOSE/SLEEVE 32-8M0064780 32-856818A 1
25 HOSE, (57.00 Inches Bulk) (Cut to 16 Inches) 32-8M0108355 32-8M0047428, 32-830756109, 32-99127109, 32-877821
26 CONNECTOR 22-858955
27 CLAMP, Hose (15.3) 54-8M0214964
28 HOSE 32-8839461
29 TUBING, (34.00 Inches Bulk) (Cut to 15 Inches) To Elbow on Plenum 32-85583464
30 TUBING, (34.00 Inches Bulk) (Cut to 28 Inches) To Oil Pump 32-85583464
31 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
32 CONDUIT 32-883965
- GASKET SET, Powerhead 27-832934A00
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L WORK) 883893A07 883893A04, 883893A03, 883893A02 (3L WORK)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Gear Housing(Driveshaft)(Standard/Counter Rotation)

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Below is the parts list for Mercury 250 (3.0L EFI) Gear Housing(Driveshaft)(Standard/Counter Rotation):

Mercury 250 (3.0L EFI) Gear Housing(Driveshaft)(Standard/Counter Rotation) Diagram
Position No. Part Name OEM Number Supersedes
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Standard-Long) 1623-859399T13 1623-859399R13 (Standard-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Standard-X-Long) 1623-859399T14 1623-859399R14 (Standard-X-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Standard-XX-Long) 1623-859399T15 1623-859399R15 (Standard-XX-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Counter Rotation-X-Long) 1623-859399T16 1623-859399R16 (Counter Rotation-X-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Counter Rotation-XX-Long) 1623-859399T17 1623-859399R17 (Counter Rotation-XX-Long)
1 GEAR HOUSING ASSEMBLY, Basic 1623-859399T18 1623-857113T 3
2 PIN 17-379721
3 FILLER BLOCK 821526001 821526
4 PITOT TUBE 859402
5 ANODE 97-826134Q 826134, 826134A 1
6 SCREW, (M6 x 40) 10-4000333
7 NUT, (M6) Stainless Steel 11-401386
8 BEARING ASSEMBLY, Roller 31-42647A1
9 PIN, Dowel - Without Hole (.375 x .625) 17-43044
10 SCREW KIT, (.375-16 x .250) Drain 10-79953Q04
11 SEAL 12-191833
12 FITTING 22-881866 22-859432
13 SCREW, (M6 x 16) 10-1993716
14 COVER 858934
15 GASKET 27-858935
16 NOT SOLD SEPARATE, Pinion Gear (1.75:1 - 12/21)(Part of 43-859321A3 or 43-828695A1) NSS
17 WASHER 12-92721
18 NUT, (.625-18) 11-35921
19 SEAL, Oil 26-8M0204708
20 O-RING, (.799) Comment: (Orange) 25-8M0214927
20 O-RING, (799 x .103) Comment: (Black) 25-896522
21 SCREW, (M6 x 16) 10-1993716
22 WASHER 12-77674
23 SHIFT SHAFT 824145
24 DRIVESHAFT Comment: (Long) 45-881938 45-858711 (Long)
24 DRIVESHAFT Comment: (X-Long) 45-881942 45-858712 (X-Long)
24 DRIVESHAFT Comment: (XX-Long) 45-881943 45-858713 (XX-Long)
25 SHIM ASSEMBLY 15-8M0063268
26 BEARING, Tapered Roller 31-8M0146553
27 NOT SOLD SEPARATE, Cup NSS
28 KEY 28-8M0204723
29 SHIM SET 15-42637A1
30 BEARING, Roller 31-8M0146566
31 NOT SOLD SEPARATE, Cup NSS
32 RETAINER 8245191
33 CARRIER ASSEMBLY 8M0214948
34 O-RING, (2.175 x .175) Comment: (Orange) 25-8M0142854
34 O-RING, (2.175 x .103) Comment: (Black) 25-8M0142854
35 SEAL, Oil 26-8M0214939
36 SEAL, Oil 26-8M0214939
37 HOUSING KIT, Upper Water Pump 817275A2
38 SEAL KIT 26-816575A2
39 GASKET 27-430331
40 GASKET 27-8172771
41 FACEPLATE 8M0204709
42 IMPELLER 47-43026T2
43 COUPLING ASSEMBLY 832942A1
44 O-RING, (.796 x .139) 25-8M0204645
45 O-RING, (1.046) 25-8M0204654
- REBUILD KIT, Water Pump 817275A5
- SEAL KIT, Gear Housing 26-816575A4
- REPAIR KIT, Water Pump Impeller 47-8M0100526 47-43026Q06

Gear Housing, Propeller Shaft - Counter Rotation

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Below is the parts list for Mercury 250 (3.0L EFI) Gear Housing, Propeller Shaft - Counter Rotation:

Mercury 250 (3.0L EFI) Gear Housing, Propeller Shaft - Counter Rotation Diagram
Position No. Part Name OEM Number Supersedes
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (X-Long) 1623-859399T16 1623-859399R16 (X-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (XX-Long) 1623-859399T17 1623-859399R17 (XX-Long)
1 GEAR HOUSING ASSEMBLY, Basic 1623-859399T18 1623-857113T 3
2 PLUG 22-859403
3 SHIFT CRANK 8M0226861
4 SPOOL ASSEMBLY 8M0235940
5 NOT SOLD SEPARATE, Spool NSS
6 NOT SOLD SEPARATE, Sleeve NSS
7 COTTER PIN 18-469501
8 SHIM SET 15-44491A1
9 ADAPTOR ASSEMBLY, Bearing 828830A2
10 BEARING ASSEMBLY, Needle Rollers 31-814653T 31-814653, 31-814653001
11 THRUST WASHER 12-815481
12 BEARING, Thrust 31-815480
13 GEAR, Reverse (12/21) 43-828696T2
14 BEARING ASSEMBLY, Roller 31-15844
15 SPRING 24-30893
16 CLUTCH 52-859340T 52-854735T, 52-828288
17 PIN, Cross 17-8M0100263 17-8M0084681, 17-8M0020941, 17-30632
18 PIN, Detent 17-828356
19 PROPELLER SHAFT 44-8M0140448
20 GEAR SET, Forward/Pinion (12/21) 43-828695A1
21 SPACER SHIM , (.206) 23-1761514
21 SPACER SHIM , (.208) 23-1761515
21 SPACER SHIM, (.210) 23-1761516
21 SPACER SHIM, (.212) 23-1761517
21 SPACER SHIM, (.214) 23-1761518
21 SPACER SHIM, (.216) 23-1761519
21 SPACER SHIM, (.218) 23-1761520
21 SPACER SHIM, (.220) 23-1761521
21 SPACER SHIM, (.222) 23-1761522
21 SPACER SHIM, (.224) 23-1761523
21 SPACER SHIM, (.226) 23-1761524
21 SPACER SHIM, (.228) 23-1761525
21 SPACER SHIM, (.230) 23-1761526
22 BEARING, Thrust 31-815480
23 THRUST WASHER 12-815481
24 ADAPTOR ASSEMBLY, Bearing 828831A3
25 BEARING ASSEMBLY, Needle Rollers 31-814653T 31-814653, 31-814653001
26 THRUST WASHER 12-18448
27 BEARING, Thrust 31-15842
28 RACE, Thrust 8182911
29 KEEPER 814605
30 O-RING Comment: (Orange) 25-8M0214920
30 O-RING, (3.850 x .210) Comment: (Black) 25-8M0142840
31 CARRIER ASSEMBLY, Bearing 818290T8
32 BEARING, Needle 31-30956T
33 SEAL, Oil (Inside) 26-14077
34 SEAL (Outside) 26-8M0204670
35 TAB WASHER 14-18323
36 RETAINER 8M2011027 79448
37 ANODE KIT 97-76214Q5
38 SCREW, (.437-14 x 1.750) 10-8M0204686
39 NOT SOLD SEPARATE, Decal- Counter Rotation NSS
- SEAL KIT, Gear Housing 26-816575A4

Gear Housing, Propeller Shaft - Standard Rotation

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Below is the parts list for Mercury 250 (3.0L EFI) Gear Housing, Propeller Shaft - Standard Rotation:

Mercury 250 (3.0L EFI) Gear Housing, Propeller Shaft - Standard Rotation Diagram
Position No. Part Name OEM Number Supersedes
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (Long) 1623-859399T13 1623-859399R13 (Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (X-Long) 1623-859399T14 1623-859399R14 (X-Long)
- GEAR HOUSING ASSEMBLY, Complete (4.75 Inch/120.65 mm Torpedo Diameter) Comment: (XX-Long) 1623-859399T15 1623-859399R15 (XX-Long)
1 GEAR HOUSING ASSEMBLY, Basic 1623-859399T18 1623-857113T 3
2 PLUG 22-859403
3 SHIFT CRANK 8M0226861
4 SPOOL ASSEMBLY 8M0235940
5 NOT SOLD SEPARATE, Shift Spool NSS
6 COTTER PIN 18-469501
7 NOT SOLD SEPARATE, Sleeve NSS
8 GEAR SET, Forward/Pinion (12/21) 43-859321A3
9 SHIM SET 15-44491A1
10 BEARING SET, Cup And Cone 31-30894A1
11 NOT SOLD SEPARATE, Cup NSS
12 RING, Retaining 53-856823
13 BEARING, Needle 31-30895T
14 SPRING 24-30893
15 CLUTCH 52-859340T 52-854735T, 52-828288
16 PIN, Detent 17-828356
17 PIN, Cross 17-8M0100263 17-8M0084681, 17-8M0020941, 17-30632
18 PROPELLER SHAFT 44-8M0140440
19 GEAR, Reverse (12/21) 43-859322A1
20 SPACER 23-824108
21 RING, Thrust 681001
22 BEARING, Ball 30-88957T
23 O-RING Comment: (Orange) 25-8M0214920
23 O-RING, (3.850 x .210) Comment: (Black) 25-8M0142840
24 CARRIER ASSEMBLY, Bearing 818763T11 818763A11
25 BEARING, Needle 31-30956T
26 SEAL, Oil (Inside) 26-14077
27 SEAL (Outside) 26-8M0204670
28 TAB WASHER 14-18323
29 RETAINER 8M2011027 79448
30 ANODE KIT 97-76214Q5
31 SCREW, (.437-14 x 1.750) 10-8M0204686
- SEAL KIT, Gear Housing 26-816575A4

Oil Injection Components

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Below is the parts list for Mercury 250 (3.0L EFI) Oil Injection Components:

Mercury 250 (3.0L EFI) Oil Injection Components Diagram
Position No. Part Name OEM Number Supersedes
1 TANK ASSEMBLY 1200-8M0119508 1200-8M0064073, 1270-830889A10, 1270-830889A 4
2 NOT SOLD SEPARATE, Decal-Reservoir NSS
3 SCREW, (.164-18 x .375) 10-58376
4 WASHER, (.203 x .562 x .060) Stainless Steel 12-72761
5 CAP ASSEMBLY 36-814449A3
6 GASKET 27-42999T
7 SWITCH ASSEMBLY 87-856156T02 87-856156A 2
8 SCREW, (M8 x 35) 10-81893435
9 WASHER 12-4002318
10 GROMMET Comment: SN# 0T979999 & Below 25-855362001 25-855362 SN# 0T979999 & Below
10 GROMMET Comment: SN# 0T980000 & Up 25-855362001 25-855362 SN# 0T980000 & Up
11 BUSHING 23-855364
12 HOSE, (57.00 Inches Bulk) (Cut to 7 Inches) 32-8M0108355 32-8M0047428, 32-830756109, 32-99127109, 32-877821
13 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
14 FITTING 22-8M0207780
15 HOSE, (2.00 Inches) 32-875283
16 FILTER, Oil - In Line 35-875284T01 35-875284001, 35-875284
17 HOSE 32-875289
18 CONNECTOR 22-858955
19 NOT SOLD SEPARATE, Plug NSS
20 HOSE, (24.00 Inches Braided) (Cut to 22 Inches) 32-892830053

Port Bleed System

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Below is the parts list for Mercury 250 (3.0L EFI) Port Bleed System:

Mercury 250 (3.0L EFI) Port Bleed System Diagram
Position No. Part Name OEM Number Supersedes
1 CHECK VALVE 21-8282182
2 PIPE PLUG 22-8272011
3 TUBING, (38.00 Inches Bulk) (Cut to 20-1/2 Inches) 32-8M0054152 32-856060 65
4 CHECK VALVE 21-8159234
5 CHECK VALVE, 90 Degree (.0625-27) 21-8592352
6 TUBING, (38.00 Inches Bulk) (Cut to 13 Inches) 32-8M0054152 32-856060 65
7 CHECK VALVE 21-426585
8 PIPE PLUG 22-8272011
9 CLIP 54-23567
10 SCREW, (#10-16 x .500) 10-878608 10-812832
11 TUBING, (38.00 Inches Bulk) (Cut to 11 Inches) 32-8M0054152 32-856060 65
12 TUBING, (240.00 Inches Bulk) (Cut to 22-1/2 Inches) 32-892024122 32-99130122
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Power Trim Components

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Below is the parts list for Mercury 250 (3.0L EFI) Power Trim Components:

Mercury 250 (3.0L EFI) Power Trim Components Diagram
Position No. Part Name OEM Number Supersedes
- POWER TRIM, Complete Comment: SN# 1B226999 & Below 855998A11 855998A08, 855998A07, 855998A10, 855998A09, 855998A05, 855998A 3 SN# 1B226999 & Below
- POWER TRIM ASSEMBLY, Complete Comment: SN# 1B227000 & Up 855998A11 855998A08, 855998A07, 855998A10, 855998A09, 855998A05, 855998A 3 SN# 1B227000 & Up
1 TRIM MOTOR 878265A4
2 NOT SOLD SEPARATE, Armature NSS
3 NOT SOLD SEPARATE, End Frame NSS
4 SCREW, (M6 x 30) 10-82494830
5 LOCKWASHER, (M6) 13-400256
6 DRIVESHAFT 8782451
7 PO CHECK KIT 878410A1
8 MANUAL RELEASE ASSEMBLY Comment: (Includes Reference #26) 893929A01 813442A 2 (Includes Reference #26)
9 SHAFT KIT 8M0142997
10 PIN 17-878267 17-44431
11 TILT CYLINDER ASSEMBLY Comment: SN# 1B226999 & Below 878235A03 878235A02, 878235A 1 SN# 1B226999 & Below
11 TILT CYLINDER ASSEMBLY Comment: SN# 1B227000 & Up 878235A03 878235A02, 878235A 1 SN# 1B227000 & Up
12 GUIDE KIT Comment: (Includes Reference #26) 878239A02 878239A 1 (Includes Reference #26)
13 O-RING KIT Comment: (Includes Reference #26) 8M0142999
14 SHOCK ROD KIT Comment: (Includes Reference #26) 8M0168219
15 PISTON ASSEMBLY, Memory 8M0143000
16 REPAIR KIT, Check Valve Comment: (Includes Reference #26) 878406A02 878406A 1 (Includes Reference #26)
17 PISTON ASSEMBLY 878414T01 878414A 1
18 PISTON ASSEMBLY 878413A1
19 GUIDE ASSEMBLY 1100-8M0021648 878243A 1
20 RESERVOIR KIT 878264A1
21 PLUG ASSEMBLY 19-811613
22 SCREW, (M6 x 14) 10-4000327
23 WASHER 12-4002315
24 PUMP KIT 892251A01 878411A 1
25 REPAIR KIT, Power Trim 878408A1
26 PIN, Trilobe 17-821539 17-13794, 17-19603
27 SCREW, (M10 x 30) 10-858771
28 WASHER 12-4002319
29 ANODE KIT 97-818298Q1
30 SCREW, (M6 x 25) 10-8M0204707
31 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
32 SHAFT Comment: SN# 0T979999 & Below 99625002
32 SHAFT Comment: SN# 0T980000 & Up 99625002
33 C WASHER 8M0084613 69205
34 CLAMP 54-26550
35 SCREW, (#10-16 x .600) 10-878609 10-812832 1
36 CONDUIT, (.350 Inside Diameter x 3.00 Feet Bulk) (Cut to 12 Inches) 32-828547353
37 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275

Powerhead Gasket Set Components

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Below is the parts list for Mercury 250 (3.0L EFI) Powerhead Gasket Set Components:

Mercury 250 (3.0L EFI) Powerhead Gasket Set Components Diagram
Position No. Part Name OEM Number Supersedes
- GASKET SET, Powerhead 27-832934A00
0 DIAPHRAGM KIT, Fuel Pump 21-857005A1
0 NOT SOLD SEPARATE, Diaphragm NSS
0 NOT SOLD SEPARATE, Retainer NSS
0 NOT SOLD SEPARATE, Spring NSS
0 NOT SOLD SEPARATE, Cap NSS
0 NOT SOLD SEPARATE, Spring NSS
0 NOT SOLD SEPARATE, Cap-Spring End NSS
0 NOT SOLD SEPARATE, Gasket-Boost NSS
0 NOT SOLD SEPARATE, Gasket-Pulse NSS
0 GASKET, Fuel Pump 27-8M0204705
0 GASKET, Fuel Management Adaptor Plate 27-804680
0 O-RING, (3.237 x .103), Lower End Cap 25-62700
0 SEAL, Cylinder Head 818574
0 GASKET, Thermostat Cover 27-8503181
0 O-RING, (.859 x .139), Crankshaft-Lower 25-35126
0 O-RING, (1.989 x .070), Crankshaft-Upper 25-823683 25-64067
0 GASKET, Cylinder Block 27-8329335
0 GASKET, Exhaust Plate 27-8329344
0 GASKET, Relief Valve Cover & Plate 27-88907003
0 SEAL, Thermostat Comment: (Not used for this application) 26-854639001 26-854639 (Not used for this application)

Service/Support Material

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Below is the parts list for Mercury 250 (3.0L EFI) Service/Support Material:

Mercury 250 (3.0L EFI) Service/Support Material Diagram
Position No. Part Name OEM Number Supersedes
- PARTS MANUAL, 200/225/250 (3.0L) SeaPro/Marathon EFI 90-803199004
- SERVICE MANUAL Comment: (2004) 90-884294R01 90-884294 (2004)
- SERVICE MANUAL Comment: (2005 and up) 90-884294R01 90-884294 (2005 and up)
- OWNERS MANUAL Comment: (2004) 90-10128041
- OWNERS MANUAL Comment: (2005) 90-10128050
- OWNERS MANUAL Comment: (2006) 90-10128060
- OWNERS MANUAL, Spanish 90-10128J60
- OWNERS MANUAL, French 90-10128D60
- INSTALLATION MANUAL 90-818937060
- DECAL, EPA Label Information Comment: (200)(2004) 37-891764A04
- DECAL, EPA Label Information Comment: (200)(2005) 37-891764A05
- DECAL, EPA Label Information Comment: (200)(2006) 37-891764A06
- DECAL, EPA Label Information Comment: (225/250/3L)(2004) 37-804670A04
- DECAL, EPA Label Information Comment: (225/250/3L)(2005) 37-804670A05
- DECAL, EPA Label Information Comment: (225/250/3L)(2006) 37-804670A06
- TOOL KIT (SeaPro/Marathon) 91-826798A1

Solenoid Plate(Serial Number 1B226999 & Below)

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Below is the parts list for Mercury 250 (3.0L EFI) Solenoid Plate(Serial Number 1B226999 & Below):

Mercury 250 (3.0L EFI) Solenoid Plate(Serial Number 1B226999 & Below) Diagram
Position No. Part Name OEM Number Supersedes
1 PLATE 858366T2
2 SOLENOID ASSEMBLY, (#10-32 / .3125-18 Terminals) 89-817109A2
3 GROMMET 25-822179
4 SCREW, (M6 x 25 MM) 10-82129125
5 BUSHING 23-8M0214955
6 RELAY ASSEMBLY 8M0207773
7 NOT SOLD SEPARATE, Decal NSS
8 BRACKET 828102
9 BUSHING 23-8M0214955
10 GROMMET 25-818967
11 HARNESS ASSEMBLY, Engine Wiring 84-880005T2
12 FUSE, Mini - Yellow - 20 Ampere Comment: (20 AMP) 88-832969T20 88-832969 20 (20 AMP)
12 FUSE, Mini - Tan - 5 Ampere Comment: (5 AMP) 88-832969T05 88-832969 5 (5 AMP)
13 COVER, Fuse 858754
- HARNESS ASSEMBLY (TPS) 879346A41 84-878073A 2
- HARNESS ASSEMBLY, Encoder, Crank Position Sensor 84-879964A2
- HARNESS ASSEMBLY, Alternator, Alternator 84-881262A2
14 SCREW, (M6 x 14) 10-82129114
15 J CLIP 54-8M0024808
16 CABLE ASSEMBLY 84-882830A1
17 SCREW, (M6 x 12) 10-82130012
18 HARNESS ASSEMBLY, Trim 84-819514T18
19 HARNESS ASSEMBLY, Digital Adaptor 84-859244T1
20 HARNESS ASSEMBLY, Fuse - 100 Ampere 84-878231A6
21 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
22 CAP NUT, 10-32,11-813938
23 NUT, (.312-18) 11-8M0204668
24 NUT, Brass 10-32,11-45076
25 LOCKWASHER, (.312) 13-53166
26 CLIP, (1.00) 54-858755
27 CLIP 54-828991T 54-828991
28 PCM, Propulsion Control Module Comment: (200) SN# 0T920996 & Below 89790644T 88555741T, 88555741S, 88555729S, 88555721S (200) SN# 0T920996 & Below
28 PCM, Propulsion Control Module Comment: (200) SN# 0T920997 & Up 89790644T 88555741T, 88555741S, 88555729S, 88555721S (200) SN# 0T920997 & Up
28 PCM, Propulsion Control Module Comment: (225) SN# 0T920531 & Below 89790645T 88555742T, 88555742S, 88555727S, 88555711S (225) SN# 0T920531 & Below
28 PCM, Propulsion Control Module Comment: (225) SN# 0T920532 & Up 89790645T 88555742T, 88555742S, 88555727S, 88555711S (225) SN# 0T920532 & Up
28 PCM, Propulsion Control Module Comment: (3L Work) SN# 0T920531 & Below 89790647T 88555744S, 88555730S, 88555710S (3L Work) SN# 0T920531 & Below
28 PCM, Propulsion Control Module Comment: (3L Work) SN# 0T920532 & Up 89790647T 88555744S, 88555730S, 88555710S (3L Work) SN# 0T920532 & Up
28 PCM, Propulsion Control Module Comment: (250) SN# 0T920525 & Below 89790646T 88555743T, 88555743S, 88555735S, 88555728S, 88555712S (250) SN# 0T920525 & Below
28 PCM, Propulsion Control Module Comment: (250) SN# 0T920526 & Up 89790646T 88555743T, 88555743S, 88555735S, 88555728S, 88555712S (250) SN# 0T920526 & Up
29 SCREW, (M6 x 25) 10-82130025
30 BUSHING 23-856954
31 GROMMET 25-8M0190980
32 WASHER, (.265 x .750 x .048) Stainless Steel 12-65567
33 CLIP 8590881
34 SCREW, (M6 x 10) 10-82129110
35 SENSOR KIT, (100 PSI) 881879A2
36 FITTING Comment: SN# 0T979999 & Below 22-8M0207782
36 FITTING Comment: SN# 0T980000 & Up 22-8M0207782
37 CLIP, (.865) 54-883066
38 BRACKET 859313
39 GROMMET 25-818967
40 BUSHING, To Block 23-8M0214955
41 SCREW, (M6 x 25) 10-82130025
42 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
43 CABLE ASSEMBLY, (4.00 Inches) Black 84-88807A16
44 SCREW, (M8 x 20) 10-81893420
45 CABLE ASSEMBLY, Battery - Negative 84-88439A26
45 CABLE ASSEMBLY, Battery - Positive 84-88439A25
46 CONNECTOR ASSEMBLY 832948A1
47 CONNECTOR, 6 Pin Plug 881065A1
48 HARNESS ASSEMBLY (200/3.0L Work) 84-882815A1
49 CAP ASSEMBLY, 3 Position-Female Connector (Counter Rotation) 881175A1
50 CAP ASSEMBLY, 3 Position-Male Connector (Counter Rotation) 881176A1
51 BOOT, Insulator - Red 85-8500671
- CAP, Female 13540

Solenoid Plate(Serial Number 1B227000 & Up)

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Below is the parts list for Mercury 250 (3.0L EFI) Solenoid Plate(Serial Number 1B227000 & Up):

Mercury 250 (3.0L EFI) Solenoid Plate(Serial Number 1B227000 & Up) Diagram
Position No. Part Name OEM Number Supersedes
- NOT SOLD SEPARATE, Electrical Plate Assembly-Complete NSS
1 PLATE 858366T2
2 SOLENOID ASSEMBLY, (#10-32 / .3125-18 Terminals) 89-817109A2
3 GROMMET 25-822179
4 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
5 SCREW, (M6 x 25 MM) 10-82129125
6 BUSHING 23-8M0214955
7 RELAY ASSEMBLY 8M0207773
8 NOT SOLD SEPARATE, Decal-Trim Relay NSS
9 BRACKET 828102
10 BUSHING 23-8M0214955
11 GROMMET 25-818967
12 SCREW, (M6 x 10) 10-82129110
13 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
14 CLIP 54-828991T 54-828991
15 CLIP, (1.00) 54-858755
16 HARNESS ASSEMBLY, Fuse - 100 Ampere 84-878231A6
17 HARNESS ASSEMBLY, Trim 84-819514T21 84-819514A21
18 HARNESS ASSEMBLY, Engine 84-892973T01
19 FUSE, Mini - Yellow - 20 Ampere Comment: (20 AMP) 88-832969T20 88-832969 20 (20 AMP)
19 FUSE, Mini - Tan - 5 Ampere Comment: (5 AMP) 88-832969T05 88-832969 5 (5 AMP)
20 COVER, Fuse 858754
- HARNESS ASSEMBLY (TPS) 879346A41 84-878073A 2
- HARNESS ASSEMBLY, Encoder, Crank Position Sensor 84-879964A2
- HARNESS ASSEMBLY, Alternator, Alternator 84-881262A2
21 CABLE ASSEMBLY, Starter 84-882829A1
22 CABLE ASSEMBLY, Battery - Positive 84-88439A46
23 NUT, (.312-18) 11-8M0204668
24 LOCKWASHER, (.312) 13-53166
25 CAP NUT, 10-32,11-813938
26 NUT, Brass 10-32,11-45076
27 CABLE ASSEMBLY, (4.00 Inches) Black 84-88807A16
28 CAP, Female 13540
28 PLUG, Male 13541
29 PCM, Propulsion Control Module Comment: (200) 89790644T 88555741T, 88555741S, 88555729S, 88555721S (200)
29 PCM, Propulsion Control Module Comment: (225) 89790645T 88555742T, 88555742S, 88555727S, 88555711S (225)
29 PCM, Propulsion Control Module Comment: (3.0L Work) 89790647T 88555744S, 88555730S, 88555710S (3.0L Work)
29 PCM, Propulsion Control Module Comment: (250) 89790646T 88555743T, 88555743S, 88555735S, 88555728S, 88555712S (250)
30 SCREW, (M6 x 25) 10-82130025
31 WASHER, (.265 x .750 x .048) Stainless Steel 12-65567
32 GROMMET 25-8M0190980
33 BUSHING 23-856954
34 CLIP 54-891520001
35 SCREW, (M6 x 14) 10-82129114
36 BRACKET 892295F01
37 GROMMET 25-8M0190980
38 BUSHING 23-822003
39 SENSOR, Pressure (0 - 100 PSI) 881879T11 881879011, 881879A 6
40 FITTING 22-8M0207782
41 CLIP, (.865) 54-883066
42 CLIP 54-879962
43 SCREW, (M6 x 25) 10-82130025
44 SCREW, (M6 x 12) 10-82130012
45 CABLE ASSEMBLY, Battery - Negative 84-88439A26
46 SCREW, (M8 x 20) 10-81893420
47 HARNESS ASSEMBLY (200/3.0L Work) 84-882815A1
48 CONNECTOR ASSEMBLY, Weather Cap 6 Pin 877613A02
49 CONNECTOR ASSEMBLY, Weather Cap - Male 830796A04

Speedometer/Block Pressure System

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Below is the parts list for Mercury 250 (3.0L EFI) Speedometer/Block Pressure System:

Mercury 250 (3.0L EFI) Speedometer/Block Pressure System Diagram
Position No. Part Name OEM Number Supersedes
1 FITTING 22-881866 22-859432
2 TUBING, (52.00 Inches Bulk) (Cut to 44 Inches) 32-85978571
3 COUPLER 22-8M0214971
4 PLUG 22-859732
5 FITTING, Adapter 22-8M0214970
6 TUBING, (52.00 Inches Bulk) (Cut to 5 Inches) 32-85978571
7 TEE, Fitting, To Coil Plate Sensor 22-875207
8 TUBING, (72.00 Inches Bulk) (Cut to 52 Inches) 32-85944975

Starboard Bleed System

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Below is the parts list for Mercury 250 (3.0L EFI) Starboard Bleed System:

Mercury 250 (3.0L EFI) Starboard Bleed System Diagram
Position No. Part Name OEM Number Supersedes
1 TUBING, (38.00 Inches Bulk) (Cut to 15-1/2 Inches) 32-8M0054152 32-856060 65
2 CHECK VALVE, 90 Degree (.0625-27) 21-8592352
3 TUBING, (38.00 Inches Bulk) (Cut to 16-1/2 Inches) 32-8M0054152 32-856060 65
4 TUBING, (38.00 Inches Bulk) (Cut to 15 Inches) 32-8M0054152 32-856060 65
5 CLIP 54-23567
6 SCREW, (#10-16 x .500) 10-878608 10-812832
7 CHECK VALVE 21-8282182
- POWERHEAD ASSEMBLY Comment: (225) 883892A07 883892A04, 883892A03, 883892A02 (225)
- POWERHEAD ASSEMBLY Comment: (3L Work) 883893A07 883893A04, 883893A03, 883893A02 (3L Work)
- POWERHEAD ASSEMBLY Comment: (250) 883894A07 883894A04, 883894A03, 883894A02 (250)
- POWERHEAD ASSEMBLY Comment: (200) 891823A07 891823A04, 891823B04 (200)

Starter Motor

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Below is the parts list for Mercury 250 (3.0L EFI) Starter Motor:

Mercury 250 (3.0L EFI) Starter Motor Diagram
Position No. Part Name OEM Number Supersedes
1 STARTER MOTOR ASSEMBLY Comment: SN# 0T960098 & Below 50-892339T01 50-892339T, 50-853329T SN# 0T960098 & Below
1 STARTER MOTOR ASSEMBLY Comment: SN# 0T960099 & Up 50-892339T01 50-892339T, 50-853329T SN# 0T960099 & Up
2 THRU BOLT 10-803005
3 GEAR KIT 43-880805A1
4 SOLENOID KIT 809463A1
5 SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel 10-69035
6 CABLE ASSEMBLY, (6.00 Inches) Black 84-93388A1
7 DECAL, Warning, High Voltage 37-8272822
8 LOCKWASHER, (M5) 13-400255
9 NUT, (M5) Stainless Steel 11-400211
10 LOCKWASHER, (.312) 13-8M0204647
11 NUT, (M8) Stainless Steel 11-400213
12 COLLAR 23-8M0034918 23-8M0001391, 56703
13 STOP 8M0043276 879845

Swivel Bracket and Steering Arm

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Below is the parts list for Mercury 250 (3.0L EFI) Swivel Bracket and Steering Arm:

Mercury 250 (3.0L EFI) Swivel Bracket and Steering Arm Diagram
Position No. Part Name OEM Number Supersedes
1 SWIVEL BRACKET ASSEMBLY, Black 1499-8M0102865 1499-8710T20
2 O-RING 25-8M0214926
3 BUSHING 23-818764 23-67669
4 SPACER 23-816039
5 SEAL, Oil (Lower) 26-87735
6 FITTING, Grease 22-8M0169589
7 BUSHING 23-821207 23-99608
8 THRUST WASHER 12-816432
9 YOKE, Bottom Comment: (Carbon Steel) 814084F1
9 YOKE, Bottom Comment: (Stainless Steel) 826364T 826364F 1 (Stainless Steel)
10 RING, Retaining 53-67684
11 STRIKER PLATE 8M0045383 99630 1
12 LOCKWASHER, (.375) 13-58643
13 NUT, (.375-24) 11-46335
14 SCREW, (.250-28 x .500) 10-64014
15 NOT SOLD SEPARATE, Decal-Serial Overlaminate NSS
16 SENDER ASSEMBLY, Trim 8M0074846 821180A 6
17 SCREW, (#10-24 x .750) 10-852368 10-56682
18 LOCKWASHER, Stainless Steel 10,13-26996
19 WASHER, (.203 x .406 x .040) 12-89302
20 SWIVEL PIN ASSEMBLY, Steering Arm Comment: (Carbon Steel) 17-67706A55
20 SWIVEL PIN ASSEMBLY, Steering Arm - Stainless Steel Comment: (Stainless Steel) 17-8M0132731
21 SCREW, (M12 x 190) 10-8M0141069
22 BUMPER Comment: SN# 0T979999 & Below 824998001 824998 SN# 0T979999 & Below
22 BUMPER Comment: SN# 0T980000 & Up 824998001 824998 SN# 0T980000 & Up
23 MOUNT, Upper 8163851
24 WASHER 12-8154371
25 WASHER 12-815436
26 NUT, (M12) 11-896963 11-859129, 11-90099
27 CLAMP 8M0036783 813769
28 SCREW, (M8 x 35) 10-81893435
29 LINK ROD ASSEMBLY 92876A12
30 SCREW, (.375-24 x 1.250) 10-849838 10-14000
31 NUT, (.375-24) Stainless Steel 11-8M0204726
32 WASHER, (.390 x .625 x .062) Stainless Steel 12-37828

Throttle Linkage

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Below is the parts list for Mercury 250 (3.0L EFI) Throttle Linkage:

Mercury 250 (3.0L EFI) Throttle Linkage Diagram
Position No. Part Name OEM Number Supersedes
1 LEVER 8M0040987 825268 2
2 SCREW, (M8 x 35) 10-81893435
3 WASHER 12-36042
4 BUSHING 23-821113
5 SCREW, (M6 x 55) 10-40124
6 NUT, (M6) Stainless Steel 11-400212
7 CAP 42942
8 INSERT 42927
9 NUT, (M6) Stainless Steel 11-401386
10 BUSHING 23-8M0215006
11 LINK, To Cam 8583541
12 BRACKET 824010T05 824010 2
13 LATCH 824016
14 DRIVE SCREW 10-42975
15 CUP, Barrel Retainer 824015
16 SCREW, (M8 x 25 MM) Stainless Steel 10-82155025
17 CLAMP 54-859172
18 SCREW, (M8 x 25 MM) Stainless Steel 10-82155025
19 BRACKET, Slide 8M0039052 896662, 854653 1
20 SWITCH 87-8M0207794
21 TIE STRAP, (8.00 Inches) 54-816311T 54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
22 SCREW, (M3.5 x 20) 10-82470620
23 WASHER 12-43430
24 WASHER 12-35459
25 WASHER 12-36001

Tools

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Below is the parts list for Mercury 250 (3.0L EFI) Tools:

Mercury 250 (3.0L EFI) Tools Diagram
Position No. Part Name OEM Number Supersedes
0 CARTRIDGE Comment: SN# 0T979999 & Below 91-880118A04 91-880118A03, 91-880118A 2 SN# 0T979999 & Below
0 DDT CARTRIDGE Comment: SN# 0T980000 & Up 91-880118A04 91-880118A03, 91-880118A 2 SN# 0T980000 & Up
0 DIAL INDICATOR TOOL 91-58222A1
0 HARNESS ASSEMBLY, DDT Adaptor Comment: (ELECTRICAL/IGNITION) 84-822560A5
0 HOLDER TOOL 91-52344
0 STAND TOOL, Powerhead 91-827001A1
0 CABLE ASSEMBLY, DDT Comment: (ELECTRICAL/IGNITION) 84-825003A1
0 DIGITAL DIAGNOSTIC TESTER Comment: (ELECTRICAL/IGNITION) 91-823686A2
0 TACH MULTI METER, DMT 2000 Digital Comment: (ELECTRICAL/IGNITION) SN# 0T979999 & Below 91-854009A3
0 MULTI-METER KIT, DMT 2004 Comment: (ELECTRICAL/IGNITION) SN# 0T980000 & Up 91-892647A01
0 CAP TOOL, Flywheel Puller 91-24161
0 SWITCH ASSEMBLY Comment: (ELECTRICAL/IGNITION) 91-52024A1
0 TESTER, Eight Chamber Comment: (ELECTRICAL/IGNITION) 91-850439T1
0 GAP TOOL, Single Chamber Comment: (ELECTRICAL/IGNITION) 91-63998A1
0 TIMING LIGHT Comment: (ELECTRICAL/IGNITION) 91-99379
0 GAUGE TOOL Comment: (POWERHEAD) 91-29287
0 SLEEVE Comment: (POWERHEAD) 91-55919
0 LIFTING EYE Comment: (POWERHEAD) SN# 0T979999 & Below 91-904551
0 LIFTING EYE Comment: (POWERHEAD) SN# 0T980000 & Up 91-904551
0 INSTALLATION TOOL, Lock Ring Comment: (POWERHEAD) 91-93004A2
0 REMOVAL TOOL, Piston Pin Lock Ring Comment: (POWERHEAD) 91-52952T1
0 MANDREL TOOL, Piston Pin Comment: (POWERHEAD) 91-92973A1
0 EXPANDER TOOL, Piston Ring Comment: (POWERHEAD) 91-24697
0 STAND, Powerhead Comment: (POWERHEAD) 91-812549T 91-812549 (POWERHEAD)
0 COMPRESSOR TOOL, Ring Comment: (POWERHEAD) 91-823237T 91-823237 (POWERHEAD)
0 TORQUE WRENCH, (0-150 lb-in) 91-66274
0 PULLER PLATE 91-37241
0 ALIGNMENT TOOL Comment: (TRIM/TILT SYSTEM) 91-112301
0 SPANNER WRENCH Comment: (TRIM/TILT SYSTEM) 91-74951
0 HEAT LAMP Comment: (TRIM/TILT SYSTEM) 91-63209
0 ROD TOOL, Backlash Indicator Flag Comment: (GEAR HOUSING) 91-53459
0 INDICATOR TOOL, Backlash Comment: (GEAR HOUSING) 91-8M0053505 91-78473 (GEAR HOUSING)
0 DRIVER TOOL, Bearing Comment: (GEAR HOUSING) 91-816244
0 REMOVAL TOOL, Bearing Comment: (GEAR HOUSING) 91-816245
0 MANDREL, Bearing Driver Cup Comment: (GEAR HOUSING) 91-31106T
0 DRIVER TOOL, Bearing Cup Comment: (GEAR HOUSING) 91-87120T
0 PRE LOAD TOOL, Bearing Comment: (GEAR HOUSING) SN# 0T979999 & Below 91-14311A04
0 TOOL, Preload Comment: (GEAR HOUSING) SN# 0T980000 & Up 91-14311A04
0 PULLER KIT, Bearing Comment: (GEAR HOUSING) 91-31229A7
0 MANDREL Comment: (GEAR HOUSING) 91-15755T
0 DRIVE HEAD TOOL Comment: (GEAR HOUSING) 91-36569T
0 DRIVER ROD TOOL, Needle Bearings Comment: (GEAR HOUSING) 91-37323
0 WRENCH TOOL, Driveshaft Bearing Comment: (GEAR HOUSING) 91-36571T
0 INSTALLER TOOL, Bearing Comment: (GEAR HOUSING) 91-38628T
0 NUT, (.625-18) Comment: (GEAR HOUSING) 11-24156
0 PLATE Comment: (GEAR HOUSING) 91-29310
0 WASHER Comment: (GEAR HOUSING) 12-34961
0 RETAINING TOOL, Bearing Comment: (GEAR HOUSING) 91-43506T
0 WASHER Comment: (GEAR HOUSING) 12-54048
0 INSTALL TOOL, Cross Pin Comment: (GEAR HOUSING) 91-86642
0 ADAPTER KIT, Dial Indicator Comment: (GEAR HOUSING) 91-83155
0 HOLDING TOOL, Dial Indicator Comment: (GEAR HOUSING) 91-89897
0 DRIVER CUP Comment: (GEAR HOUSING) 91-36577T
0 ADAPTOR TOOL, Driveshaft Comment: (GEAR HOUSING) 91-61077T
0 HOLDING TOOL, Driveshaft Comment: (GEAR HOUSING) 91-56775T
0 DRIVER CUP Comment: (GEAR HOUSING) 91-36577T
0 ADAPTOR TOOL, Driveshaft Comment: (GEAR HOUSING) 91-61077T
0 HOLDING TOOL, Driveshaft Comment: (GEAR HOUSING) 91-56775T
0 FOWARD GEAR INSTALLATION TOOL Comment: (GEAR HOUSING) 91-815850
0 INSTALLER TOOL, Needle Bearing - Forward Gear Comment: (GEAR HOUSING) 91-86943T
0 NUT TOOL, Gear Housing Cover Comment: (GEAR HOUSING) 91-61069T
0 GUIDE PLATE Comment: (GEAR HOUSING) 91-816243
0 PULLER JAWS Comment: (GEAR HOUSING) 91-816242
0 MANDREL Comment: (GEAR HOUSING) 91-92788T
0 DRIVER Comment: (GEAR HOUSING) 91-33491
0 DRIVER, Oil Seal Comment: (GEAR HOUSING) 91-31108T
0 DRIVER TOOL, Oil Seal Comment: (GEAR HOUSING) 91-817569T 91-817569 (GEAR HOUSING)
0 LOCATION TOOL, Pinion Comment: (GEAR HOUSING) SN# 0T979999 & Below 91-12349A05
0 TOOL, Pinion Locating Comment: (GEAR HOUSING) SN# 0T980000 & Up 91-12349A05
0 SHIMMING TOOL, Pinion Gear Comment: (GEAR HOUSING) SN# 0T979999 & Below 91-56048001
0 TOOL, Shimming Comment: (GEAR HOUSING) SN# 0T980000 & Up 91-56048001
0 ADAPTOR TOOL, Pinion Nut Comment: (GEAR HOUSING) SN# 0T979999 & Below 91-61067A04
0 WRENCH TOOL, Pinion Nut Comment: (GEAR HOUSING) SN# 0T980000 & Up 91-61067A04
0 PROPELLER SHAFT Comment: (GEAR HOUSING) 44-93003
0 PULLER TOOL Comment: (GEAR HOUSING) 91-85716
0 PULLER JAW ASSEMBLY Comment: (GEAR HOUSING) 91-46086A1
0 INSTALLATION TOOL, Bearing Adaptor Comment: (GEAR HOUSING) 91-18605A2
0 PULLER ASSEMBLY, Slide Hammer Comment: (GEAR HOUSING) 91-34569A1
0 GUIDE TOOL, Water Pump Alignment Pins Comment: (GEAR HOUSING) 91-821571A1
0 CLAMP TOOL KIT Comment: (FUEL SYSTEM) 91-803146A04 91-803146A 2 (FUEL SYSTEM)
0 GAUGE, Air/Fuel Pressure Comment: (FUEL SYSTEM) SN# 0T979999 & Below 91-881833A03 91-881833A 2 (FUEL SYSTEM) SN# 0T979999 & Below
0 GAUGE KIT, Air/Fuel Pressure Comment: (FUEL SYSTEM) SN# 0T980000 & Up 91-881833A03 91-881833A 2 (FUEL SYSTEM) SN# 0T980000 & Up
0 SEAL KIT, Wire Harness Comment: (ELECTRICAL) 91-881814A1

Top Cowl

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Below is the parts list for Mercury 250 (3.0L EFI) Top Cowl:

Mercury 250 (3.0L EFI) Top Cowl Diagram
Position No. Part Name OEM Number Supersedes
1 TOP COWL ASSEMBLY Comment: (Black) 4001-880012T1
1 TOP COWL ASSEMBLY Comment: (Silver) 4001-880012T36 4001-880012T 2 (Silver)
2 SCREW, (M6 x 30) 10-82130030
3 SOUND BLANKET KIT 880014A02 880014A 1
4 NOT SOLD SEPARATE, Sound Blanket-Top NSS
5 NOT SOLD SEPARATE, Sound Blanket-Port NSS
6 WASHER, (.250 External Star) 13-93702
7 COVER 826639T
8 HOOK ASSEMBLY, Rear Latch 850682T4
9 NOT SOLD SEPARATE, Pin NSS
10 RING, Retaining 53-8237951
11 ROLLER 8M0207770
12 GROMMET Comment: SN# 0T962422 & Below 25-850685T02 850685002, 25-850685 1 SN# 0T962422 & Below
12 GROMMET Comment: SN# 0T962423 & Up 25-850685T02 850685002, 25-850685 1 SN# 0T962423 & Up
13 BRACKET, Front 8M0036792 821249M 2
14 SCREW, (M6 x 20) 10-82130020
15 BUMPER, Latch 815477
16 PIN, Roll 8155381
17 NUT, (M6) Stainless Steel 11-401366
18 WASHER, (.281 x .500 x .060) Stainless Steel 12-8M0204649
19 RING, Retaining 53-8237951
20 ROLLER 8M0207770
21 WASHER 12-87161
22 NOT SOLD SEPARATE, Decal-Break-In NSS
23 NOT SOLD SEPARATE, Decal-Counter Rotation NSS
- DECAL SET Comment: (Mercury 200 EFI-3L)(2004/2005) 37-891822A03
- DECAL SET Comment: (Mercury 200 EFI 3L)(2006) 37-891822A06
- DECAL SET Comment: (3L Seapro) 37-883285A02
- DECAL SET Comment: (Mercury 225 EFI-Long)(2004/2005) 37-824105A02
- DECAL SET Comment: (Mercury 225 EFI-Long)(2006) 37-824105A06
- DECAL SET Comment: (Mercury 225 EFI X-Long/XX-Long)(Blue)(2004/2005) 37-809693A03 37-809693A02 (Mercury 225 EFI X-Long/XX-Long)(Blue)(2004/2005)
- DECAL SET Comment: (Mercury 225 EFI X-Long/XX-Long)(2006) 37-809693A06
- DECAL SET Comment: (Mercury 250 Long)(Blue)(2004/2005) 37-809167A03 37-809167A02 (Mercury 250 Long)(Blue)(2004/2005)
- DECAL SET Comment: (Mercury 250 Long)(2006) 37-809167A06
- DECAL SET Comment: (Mercury 250 X-Long)(Red)(2004/2005) 37-891877A04
- DECAL SET Comment: (Mercury 250 X-Long)(2006) 37-891877A06
- DECAL SET Comment: (3L Marathon) 37-883286A02
- DECAL SET Comment: (Mariner 225 Long) 37-827438A03 37-827438A02 (Mariner 225 Long)
- DECAL SET Comment: (Mariner 225 X-Long) 37-883284A03 37-883284A02 (Mariner 225 X-Long)
- DECAL SET Comment: (Mariner 250) 37-809168A03 37-809168A02 (Mariner 250)
- DECAL SET Comment: (Tracker 225) 37-809848A02

Transom Brackets

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Below is the parts list for Mercury 250 (3.0L EFI) Transom Brackets:

Mercury 250 (3.0L EFI) Transom Brackets Diagram
Position No. Part Name OEM Number Supersedes
1 BRACKET ASSEMBLY, Transom-Starboard 3426-828334T03
2 BRACKET ASSEMBLY, Transom-Port 3425-828333T08
3 FITTING, Grease (PORT) 22-8M0169588
4 TILT TUBE 826125A1
5 NUT, (1.00-14) Nylon Insert 11-826135
6 O-RING, (.612 x .103) 25-45711
7 WASHER 13-88750
8 NUT, (.875-14) 11-826164
9 SCREW, (.500-20 x 4.500) 10-8M0149747
10 WASHER, (.530 x .870 x .105) Stainless Steel 12-8M0204665
11 WASHER, (1.5 x 3.05 x 0.13) Stainless Steel 12-8M0204648
12 NUT, (.500-20) 11-82671117
13 LEVER ASSEMBLY, Tilt Lock 8M0115104 8M0115103, 99629T 2
14 SPRING, Tension 24-830899
15 NYLINER 23-65830
16 SPRING, Compression 24-830900
17 KNOB 99633
18 PIN, Groove 17-99615
19 PIN 17-893709 17-99617

Vapor Separator Components

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Below is the parts list for Mercury 250 (3.0L EFI) Vapor Separator Components:

Mercury 250 (3.0L EFI) Vapor Separator Components Diagram
Position No. Part Name OEM Number Supersedes
1 COVER KIT Comment: SN# 1B226999 & Below 883245T04 883245T 2 SN# 1B226999 & Below
1 COVER KIT, Vapor Separator Comment: SN# 1B227000 & Up 883245T04 883245T 2 SN# 1B227000 & Up
2 FITTING, Straight 22-881740
3 FITTING 22-883249
4 NOT SOLD SEPARATE, Elbow NSS
5 FITTING KIT, Pump Outlet Comment: (Use Without Filter) 22-855437A2
5 FITTING KIT Comment: (Use with Filter) 22-885186A1
6 O-RING Comment: (Use without Filter) 25-8M0062785 25-883209 (Use without Filter)
6 O-RING, (.468 x .078) Comment: (Use with Filter) 25-831985 25-885187 (Use with Filter)
7 FILTER 35-885188 35-823501
8 VALVE 883219
9 O-RING 25-8M0062785 25-883209
10 CAP 883220
11 PLUG 19-883208 19-881830
12 SEAL 26-883248
13 GASKET 27-883252
14 REGULATOR 883257T1
15 O-RING KIT 25-883593A1
16 WASHER 12-883258
17 SCREW, (M5 x .8) 10-883261
18 SCREW, (M5 x .8) 10-883261
19 WIRE ASSEMBLY 84-881831
20 SCREW AND WASHER, (#8-32 x .750) 1395-808612 1399-5132
21 FLOAT KIT 883253A1
22 SHAFT F10064
23 VALVE/SEAT KIT, Inlet 883247A1
24 SCREW, (M6 x 16) 10-883223
25 FILTER KIT 35-18458Q4
26 PROBE 8M0204710
27 BAFFLE 889318002 883260
28 SCREW, (M6 x 16) 10-883223
29 PUMP KIT 881705T1
30 SLEEVE 8M6000589 23-855428
31 BOWL KIT 883256T1
32 SEAL 26-883248
33 PLUG KIT 19-855435A1
34 O-RING 25-8M0062785 25-883209
35 SCREW, (M6 x 8) 10-16955

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For Mercury Owners:

To assist you in maintaining and repairing your marine engines, we hope the following resources may be of use:

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.

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