Mercury 300 (3.4 LITRE) (5611648 & Up) Outboard Motor Parts Diagram & Catalog – Free PDF Download

by JLM Marine 30 Apr 2025 0 Comments

Mercury 300 (3.4 LITRE) Outboard Motor Parts Diagram & Catalog – Free PDF Download

CARBURETOR ASSEMBLY

Below is the parts list for Mercury 300 (3.4 LITRE) CARBURETOR ASSEMBLY:

Position No.	Part Name	OEM Number	Supersedes
1	CARBURETOR ASSEMBLY (TOP - PORT) Comment: WO-5-1	1387-7785A38
1	CARBURETOR ASSEMBLY (TOP - STARBOARD) Comment: WO-5-2	1387-7785A39
1	CARBURETOR ASSEMBLY (CENTER) Comment: WO-5-3	1387-7785A40
1	CARBURETOR ASSEMBLY (BOTTOM - PORT) Comment: WO-5-4	1387-7785A41
2	JET, (.080), VENT BOWL (.080)	1395-6201
4	COVER PLATE	1395-9122
6	VENTURI Comment: WO-3	94963
7	BOWL, Fuel Comment: WO-3-1 ONLY	1395-9115
7	BOWL, Fuel Comment: WO-3	1395-9116
6	VENTURI Comment: WO-5	1395-9481
7	BOWL, Fuel Comment: WO-5-1 ONLY	1395-9478
7	BOWL, Fuel Comment: WO-5	1395-9479
9	PLUG, MAIN JET	1395-6199
11	JET, (.074), MAIN FUEL (.074) Comment: WO-3-4 ONLY	1399-3794
11	JET, (.072), MAIN FUEL (.072) Comment: WO-3	1395-6207
11	JET, (.076), MAIN FUEL (.076) Comment: WO-5	1399-3796
13	FLOAT	813470	1395-9121
18	NEEDLE, Inlet	1395-83181
20	SHAFT, Throttle Comment: WO-3-4/5-4 ONLY	1395-9118
20	SHAFT, Throttle	1395-9117
21	LEVER	67752
25	VALVE, Throttle Comment: WO-3	1395-9119
25	VALVE, Throttle Comment: WO-5	1395-9480
27	GASKET, CARBURETOR FLANGE	27-886111
30	JET, (.052), IDLE (.052) Comment: WO-3	1395-6359
30	JET, Main (.062), IDLE (.062) Comment: WO-5	1399-4217
--	GASKET SET, Carburetor Comment: CONTENTS INDICATED BY FOOTNOTE 12.	1395-9062
--	REPAIR PARTS KIT (WO-3) Comment: CONTENTS INDICATED BY FOOTNOTE 13.	1395-9063
--	REPAIR PARTS KIT (WO-5) Comment: CONTENTS INDICATED BY FOOTNOTE 14.	1395-9063
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

CARBURETOR PLATE AND REED BLOCK

Below is the parts list for Mercury 300 (3.4 LITRE) CARBURETOR PLATE AND REED BLOCK:

Position No.	Part Name	OEM Number	Supersedes
1	CARBURETOR ASSEMBLY (TOP - PORT) Comment: (WO-5-1)	1387-7785A38
2	CARBURETOR ASSEMBLY (TOP - STARBOARD) Comment: (WO-5-2)	1387-7785A39
3	CARBURETOR ASSEMBLY (CENTER) Comment: (WO-5-3)	1387-7785A40
4	CARBURETOR ASSEMBLY (B0TTOM - PORT) Comment: (WO-5-4)	1387-7785A41
5	LINK, Throttle	88586
6	LEVER, Throttle	88584
7	LEVER, Throttle, LOWER - PORT	88585
8	ROLLER, THROTTLE LEVER	67748
9	PIN, Clevis	17-67297
10	WASHER, CLEVIS PIN	12-89302
11	COTTER PIN	18-26953
12	SCREW, (.190-32 x .75), THROTTLE LEVER TO CARBURETOR	10-22523
13	LOCKWASHER, Stainless Steel, THROTTLE LEVER SCREW	10,13-26996
14	WASHER, (.200 x .440 x .032), THROTTLE LEVER SCREW	12-24676
15	LINE, (57.00 Inches Bulk)	32-8M0108355	32-8M0047428, 32-830756109, 32-99127109, 32-877821
16	CLAMP, FUEL LINES	54-68424
17	LEVER, Throttle, LOWER CARBURETOR - PORT	895981
18	SCREW, THROTTLE LEVER TO CARBURETOR	1395-6027
19	GASKET, CARBURETOR TO SOUND ATTENUATOR	27-933531
20	PLATE, CARBURETOR - PORT	8M0027809	88249
20	PLATE, CARBURETOR - STARBOARD	8M0027774	88250
21	GASKET, CARBURETOR PLATE - PORT	27-886252
21	GASKET, CARBURETOR PLATE - STARBOARD	27-886262
22	SCREW, (.250-20 x .62), REED BLOCK ADAPTOR	10-20540
23	SCREW, CARBURETOR PLATE	10-40011149
24	SCREW, REED BLOCK ADAPTOR	10-90199
26	STUD, CARBURETOR	16-815158	16-90999
27	WASHER, CARBURETOR STUD	12-4002217
28	NUT, (M8), CARBURETOR STUD	11-401368
29	STUD, PORT CARBURETOR PLATE	16-20500
30	NUT, STUD	11-36069
31	ADAPTOR, REED BLOCK	884293
32	REED BLOCK	75953
33	GASKET, REED BLOCK	27-657443
34	REED ASSEMBLY	34-75362A1
35	STOP, Reed	34-67298
36	SCREW, (#8-32 x .375), REED ATTACHING	10-57583T
37	LOCKWASHER, Stainless Steel, REED SCREW	10,13-26996
38	J CLIP, HOSE	54-61001
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

COWLS AND FRONT COVER

Below is the parts list for Mercury 300 (3.4 LITRE) COWLS AND FRONT COVER:

Position No.	Part Name	OEM Number
1	COWL ASSEMBLY, PORT (WITHOUT DECALS)	2179-7606A3
2	SEAL, CONTROL CABLE	88354
3	PAD, COWL TO FRONT COVER	67258
4	BLANKET, SOUND - COWL	91837
5	BRACKET, COWL ATTACHING (UPPER)	88351
6	BRACKET, COWL ATTACHING (LOWER)	88350
7	SCREW, (M8 x 35), UPPER AND LOWER BRACKETS	10-4000355
8	SHIELD, INLET - COWL	88477
9	SCREW, (#10-16 x .625) Stainless Steel, SHIELD TO COWL	10-48409
10	CATCH, COWL LATCH	88348
11	LATCH, COWL - STARBOARD	88349
12	SCREW, (#10-16 x .625) Stainless Steel, COWL LATCH	10-48409
13	COWL ASSEMBLY, STARBOARD (WITHOUT DECALS)	2180-7607A2
14	BLANKET, SOUND - COWL	92015
15	SEAL, HARNESS	88359
16	COVER ASSEMBLY, Cowl - Front (WITHOUT DECALS)	2181-7613A5
17	BLANKET, SOUND - COWL FRONT COVER	164581
18	SOUND BLANKET (INSERT)	164581
19	HOOK, COWL FRONT COVER ATTACHING	61158T
20	SCREW, HOOK TO COWL FRONT COVER	10-75162
21	ROPE AND HANDLE KIT, Manual/Emergency Start (FOR MANUAL STARTING)	47341A11
22	PLUG, COWL	19-73336

CRANKSHAFT, PISTONS AND CONNECTING RODS

Below is the parts list for Mercury 300 (3.4 LITRE) CRANKSHAFT, PISTONS AND CONNECTING RODS:

Position No.	Part Name	OEM Number	Supersedes
1	CRANKSHAFT ASSEMBLY	467-8784A1
2	BEARING, Ball, CRANKSHAFT (LOWER)	30-88268T
3	RING, Retaining, BALL BEARING	53-89531
4	SEAL, CRANKSHAFT/DRIVESHAFT	89938
5	SEAT, CRANKSHAFT/DRIVESHAFT	89939
6	RING, SEALING - CRANKSHAFT	8M0027715	88261
7	RACE, Bearing, CENTER MAIN	31-88270T
8	BEARING, Roller, CENTER MAIN	31-88269T
9	PISTON ASSEMBLY (STARBOARD)	782-9530A3
9	PISTON ASSEMBLY (PORT)	782-9531A3
10	RING SET, Piston	39-88256A12
11	LOCK RING, PISTON	53-8320811
12	CONNECTING ROD ASSEMBLY	631-8185A10
13	SCREW, (.375-24 x 1.250), CONNECTING ROD (3/8-24 THREAD)	10-94320
13	SCREW, CONNECTING ROD (5/16-24 THREAD)	10-96114
14	BEARING ASSEMBLY, Roller, CRANKSHAFT END	31-43012A2
15	THRUST WASHER, NEEDLE LOCATING	12-88263
16	NEEDLE, Roller Bearing, PISTON END	29-8M0204715
17	KEY, Woodruff, CRANKSHAFT	28-91800
18	CARRIER ASSEMBLY	31-814409A1
19	BEARING, Roller	31-17898
20	SEAL	26-41953
21	O-RING	25-823683	25-64067
22	WASHER, (.641 x 1.250 x .190), FLYWHEEL NUT	12-33001
23	NUT, (.625-18), FLYWHEEL	11-52901
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

CYLINDER BLOCK AND END CAPS

Below is the parts list for Mercury 300 (3.4 LITRE) CYLINDER BLOCK AND END CAPS:

Position No.	Part Name	OEM Number	Supersedes
1	BLOCK (USE WITH PRESTOLITE STARTER MOTOR)	880-9550A13
1	BLOCK (USE WITH BOSCH STARTER MOTOR)	880-9550A13
2	COVER, STARTER MOTOR - UPPER Comment: USE WITH PRESTOLITE STARTER MOTOR	88486
3	SCREW, COVER TO CRANKCASE Comment: USE WITH PRESTOLITE STARTER MOTOR	10-40062153
4	COVER, STARTER MOTOR - LOWER Comment: USE WITH PRESTOLITE STARTER MOTOR	88484
5	SCREW, COVER TO CRANKCASE Comment: USE WITH PRESTOLITE STARTER MOTOR	10-81516040
6	PIN, Dowel, LOCATING	17-40120110
7	PIN, CYLINDER BLOCK (BEARING RACE)	17-8M0036405	17-67296
8	GASKET, SEALING	27-53862
9	STUD, CYLINDER BLOCK (162 MM)	16-14137
10	STUD, CYLINDER BLOCK (110 MM)	16-14136
11	STUD, CYLINDER BLOCK (60 MM)	16-910001
12	WASHER, POWERHEAD STUDS	12-4002319
13	LOCKWASHER, (M10), POWERHEAD STUDS	13-400248
14	NUT, POWERHEAD STUDS	11-400214
15	SCREW, (.190-24 x .190), SET, CYLINDER BLOCK	10-24220
16	STUD, CYLINDER BLOCK TO CRANKCASE	16-815159	16-91004
17	LOCKWASHER, (M10), CYLINDER BLOCK STUD	13-400248
18	NUT, CYLINDER BLOCK STUD	11-400214
19	SCREW, CRANKCASE (35 MM)	10-81516235
20	SCREW, CRANKCASE TO CYLINDER BLOCK (90 MM)	10-81516290
21	SCREW, CRANKCASE TO CYLINDER BLOCK (171 MM)	10-815162170	10-93724
22	SCREW, CRANKCASE TO CYLINDER BLOCK (105 MM)	10-815162105	10-91006
23	BRACKET, CABLE ANCHOR	96839
24	SCREW, BRACKET TO CRANKCASE	10-40010127
25	LOCKWASHER, (.250) Stainless Steel, BRACKET SCREW	13-26992
26	SCREW, (.312-24 x 1.500), SHIFT CABLE TO BRACKET	10-78841
27	WASHER, (.323 x .563 x .063) Stainless Steel, SHIFT CABLE SCREW	12-8M0042642	12-70132
28	NUT, (.312-24) Stainless Steel, SHIFT CABLE SCREW	11-82670911
29	END CAP ASSEMBLY, LOWER	1166-8792A1
30	SEAL, Oil, END CAP	26-54815
31	O-RING, END CAP	25-88955
32	SCREW, END CAP ATTACHING	10-40011149
33	CHECK VALVE, BLEED HOSE Comment: STRAIGHT-THREADED	21-426585
34	TUBING, (36.00 Inches Bulk)	32-9912688
35	CLAMP, TUBING	54-68424
36	FITTING, Barbed, BLEED HOSE (PRESS-IN)	22-56759
36A	FITTING, BLEED HOSE (PRESS-IN)	22-8M0181450
37	CHECK VALVE ASSEMBLY	21-428641
38	BRACKET, FLYWHEEL COVER - FRONT	887821
39	SCREW, BRACKET TO CRANKCASE	10-40062127
40	BRACKET, ANCHOR - CONTROL CABLES Comment: EARLY MODELS	96850
41	SCREW, (.312-18 x .880), ANCHOR BRACKET Comment: EARLY MODELS	10-53167T
42	WASHER, ANCHOR BRACKET SCREW Comment: EARLY MODELS	12-8M0204690
43	LEVER, SHIFT CABLE LOCKING Comment: EARLY MODELS	87609A1
44	LINK, LEVER TO COVER Comment: EARLY MODELS	87609A1
45	COVER, SHIFT CABLE Comment: EARLY MODELS	90211
46	PIN, LEVER AND COVER Comment: EARLY MODELS	17-47175
47	CUP, BARREL RETAINER Comment: EARLY MODELS	39519
--	POWERHEAD ASSEMBLY (Prestolite Starter Motor) Comment: INCLUDES CYLINDER BLOCK AND CRANKCASE, PISTONS, CONNECTIONG RODS AND BEARINGS, ETC.	19581A89
--	POWERHEAD ASSEMBLY (Bosch Starter Motor) Comment: INCLUDES CYLINDER BLOCK AND CRANKCASE, PISTONS, CONNECTING RODS AND BEARINGS, ETC.	19581A89
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

DRIVE SHAFT HOUSING AND EXHAUST TUBE

Below is the parts list for Mercury 300 (3.4 LITRE) DRIVE SHAFT HOUSING AND EXHAUST TUBE:

Position No.	Part Name	OEM Number	Supersedes
1	HOUSING ASSEMBLY, Driveshaft (LONG)	1594-8437A2
1	HOUSING ASSEMBLY, Driveshaft (EXTRA LONG)	1594-9099A2
2	STUD, (.437-14/.437-20 x 2.190), Drive shaft housing/gear housing (2-3/16")	16-8M0034453	16-57933
3	STUD, (.437-14/.437-20 x 2.380), Drive shaft housing/gear housing (2-3/8")	16-57984
4	SCREW, (.437-14 x 2.500), DRIVE SHAFT HOUSING	10-54493
5	WASHER, DRIVE SHAFT HOUSING STUD	12-45176
6	NUT, DRIVE SHAFT HOUSING STUD	11-8M0204653
7	STRAP, SWIVEL BRACKET RETAINING	88758T
8	SCREW, (.375-24 x 4.00), STRAP TO DRIVE SHAFT HOUSING	10-67769
9	NUT, (.375-24), STRAP TO DRIVE SHAFT HOUSING SCREW	11-25269
10	TEE WASHER	94229
11	SCREW, (#10-32 x .375) Stainless Steel, TEE WASHER	10-68513
12	MOUNT, LOWER	77327
13	BUMPER, LOWER MOUNT SCREW	25067
14	SCREW, (.500-20 x 6.380), LOWER MOUNT	10-96853
15	CABLE ASSEMBLY, Ground	88238A10
16	WASHER, (.8125), LOWER MOUNT SCREW	12-49339
17	NUT, LOWER MOUNT SCREW	11-25096
18	CLAMP, LOWER MOUNT	54-8M0036782	54-67076
19	SCREW, (M8 x 35), LOWER MOUNT CLAMP	10-40001140
20	LOCKWASHER, (M8), LOWER MOUNT CLAMP SCREW	13-400247
21	COVER, LOWER MOUNT CLAMP	100-8M4500752	8M0001130, 67077T
22	SCREW, (#12-24 x .620), COVER ATTACHING (5/8")	10-88417
23	NUT, NYLON - COVER TO CLAMP SCREW	11-35521
24	PIN, Dowel (.375 x 1.00), DRIVE SHAFT HOUSING	17-20433
25	TUBE, Exhaust (LONG)	88887T
25	TUBE, Exhaust (EXTRA LONG)	88887T
26	SEAL, EXHAUST TUBE - LOWER	88883
27	GROMMET, WATER TUBE	25-89417
28	TUBE, WATER (LONG)	32-88884
28	TUBE, WATER (EXTRA LONG)	32-89098
29	SEAL, WATER TUBE	26-89419
30	CABLE ASSEMBLY, Ground	88238A10
31	SCREW, (.250-20 x .500) Stainless Steel, GROUND WIRE	10-73286
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

ENRICHNER VALVE AND HOSES

Below is the parts list for Mercury 300 (3.4 LITRE) ENRICHNER VALVE AND HOSES:

Position No.	Part Name	OEM Number	Supersedes
1	VALVE ASSEMBLY, Enrichner, ENRICHNER	42859A2
2	CONNECTOR, ENRICHNER VALVE - SIDE Comment: ATTACHES WITH BRACKET	22-67902
3	BRACKET, ENRICHNER VALVE Comment: ATTACHES WITH BRACKET	90345
4	SCREW, VALVE TO BRACKET Comment: ATTACHES WITH BRACKET	10-89075
5	WASHER, BRACKET SCREW Comment: ATTACHES WITH BRACKET	12-20192
6	CONNECTOR, ENRICHNER VALVE - BOTTOM Comment: ATTACHES WITH BRACKET	22-90275
7	BRACKET, ENRICHNER VALVE	93573
8	SCREW, (.250-20 x .620) Stainless Steel, ENRICHNER VALVE BRACKET	10-28635
9	LOCKWASHER, (.250) Stainless Steel, BRACKET SCREW	13-26992
10	NUT, (.250-20), BRACKET SCREW	11-20890
11	TERMINAL BLOCK, ENRICHNER VALVE LEADS	86-45915
12	SCREW, (#10-16 x .440), TERMINAL BLOCK (7/16")	10-69079
13	SCREW, (#10-16 x .375), LEADS TO TERMINAL BLOCK (3/8")	10-62568
14	LINE, (57.00 Inches Bulk)	32-8M0108355	32-8M0047428, 32-830756109, 32-99127109, 32-877821
15	FITTING, TEE	22-59169003
16	CLAMP, HOSES	54-68424
17	TUBING, (36.00 Inches Bulk) (.125 I.D.)	32-9912688
18	HOSE (.077 I.D.)	32-9938779
19	FITTING, TEE (.131 O.D.)	22-130342
20	FITTING, TEE (.200 O.D.)	22-130341
21	TEE, TEE (.131 O.D.)	22-130342
22	TEE FITTING, TEE (.200 O.D.)	22-13033

EXHAUST MANIFOLD AND CYLINDER HEAD

Below is the parts list for Mercury 300 (3.4 LITRE) EXHAUST MANIFOLD AND CYLINDER HEAD:

Position No.	Part Name	OEM Number	Supersedes
1	BRACKET, FLYWHEEL COVER	88834
2	SCREW, FLYWHEEL COVER BRACKET (30 MM)	10-81516030
3	STUD, FLYWHEEL COVER MOUNTING	16-8M0034435	16-15093
4	WASHER, FLYWHEEL COVER STUD (LARGE)	12-8M0204663
5	WASHER, FLYWHEEL COVER STUD (SMALL)	12-22887
6	NUT, FLYWHEEL COVER STUD	11-816874	11-73651, 11-816873, 11-90052
7	COVER, EXHAUST MANIFOLD	94110A1
8	GASKET, EXHAUST MANIFOLD COVER	27-940601
9	SCREW, EXHAUST MANIFOLD COVER (25 MM)	10-40011149
10	PLUG, (.500-14), CYLINDER BLOCK COVER	22-38407
11	MOUNT	90435
12	WASHER, MOUNT	12-21249
13	NUT, (.250-28), MOUNT	11-8267089
14	CYLINDER HEAD	41020A3
15	SEAL, CYLINDER HEAD	88251
16	O-RING, CYLINDER HEAD	25-88923
17	SCREW, CYLINDER HEAD (80 MM)	10-81742780
18	J CLIP, CYLINDER HEAD SCREW	54-47483
19	THERMOSTAT (143? )	75692
20	GASKET, THERMOSTAT	27-8M0204714
21	COVER KIT, THERMOSTAT	90390A1
22	SCREW, (.312-18 x 1.250), THERMOSTAT COVER (1-1/4")	10-74824
23	FITTING, (.250-18) 90 Degree - Brass, ELBOW - THERMOSTAT COVER	22-687271
24	HOSE, (24.500 Inches Bulk) (21-1/2")	32-77653101
25	TEE, HOSE	22-91836
26	CLAMP, HOSE	54-68424
27	HOSE, (24.500 Inches Bulk) (3")	32-77653101
28	HOSE, TELL TAIL	32-8M0108355	32-8M0047428, 32-830756109, 32-99127109, 32-877821
29	NOZZLE, TELL TAIL HOSE - REAR BRACKET	22-76256
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

EXHAUST PLATE

Below is the parts list for Mercury 300 (3.4 LITRE) EXHAUST PLATE:

Position No.	Part Name	OEM Number
1	PLATE, Exhaust	43769A3
2	GROMMET, POPPET VALVE	25-64872
3	CARRIER, POPPET VALVE	65848
4	POPPET VALVE	86596
5	SPRING, POPPET VALVE	24-90392
6	GASKET, RELIEF VALVE PLATE	27-88907003
7	PLATE ASSEMBLY, RELIEF VALVE	65664A1
8	DIAPHRAGM	648771
9	WASHER, DIAPHRAGM SCREW	12-76451
10	SCREW, (#10-16 x .750), DIAPHRAGM TO PLATE	10-69570
11	COVER, RELIEF VALVE	65663A2
12	SCREW, (M8 x 30), COVER TO EXHAUST PLATE	10-40001137
13	FITTING, (.250-18) 90 Degree - Brass, EXHAUST PLATE	22-687271
14	PIN, Dowel, LOCATING - EXHAUST PLATE	17-43044
15	SCREW, EXHAUST PLATE (65 MM)	10-81516265
16	GASKET, EXHAUST PLATE - UPPER	27-438771
17	SEAL, EXHAUST PLATE TO COWL	88355
18	GASKET, EXHAUST PLATE - LOWER	27-438782
19	PLATE, EXHAUST TUBE	88880A1
20	GASKET, Exhaust Tube	27-890842
21	SCREW, (M8 x 30), PLATE TO DRIVE SHAFT HOUSING	10-40001137
22	LOCKWASHER, (M8), PLATE SCREW	13-400247
23	SHIFT SHAFT, UPPER (LONG)	968431
23	SHIFT SHAFT, UPPER (EXTRA LONG)	968432
24	BUSHING, UPPER SHIFT SHAFT	23-27132
25	LEVER, UPPER SHIFT SHAFT	96841
26	PIN, Roll, LEVER TO SHIFT SHAFT	17-96888
27	SHIFT LINK	96848
28	BUSHING, SHIFT LINK	23-26856
29	WAVE WASHER, SHIFT LINK	13-29720
30	NUT, SHIFT LINK	11-36069
31	SCREW, SHIFT LINK	10-96849
32	NUT, (.312-24) Stainless Steel, SHIFT LINK SCREW (5/16-24)	11-28770
33	WAVE WASHER, SHIFT LINK SCREW	13-29720
34	NUT, SHIFT LINK SCREW (1/4-28)	11-36069
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

FLYWHEEL, STARTER MOTOR AND IGNITION COILS

Below is the parts list for Mercury 300 (3.4 LITRE) FLYWHEEL, STARTER MOTOR AND IGNITION COILS:

Position No.	Part Name	OEM Number	Supersedes
1	COVER, FLYWHEEL	887832
2	PLUG, FLYWHEEL COVER	19-89219001
3	MARKER, TIMING	79022
4	SCREW, (.190-32 x .380), TIMING MARKER	10-37572
5	WASHER, (.203 x .562 x .060) Stainless Steel, TIMING MARKER SCREW	12-72761
6	PLUG, Yellow, FLYWHEEL	19-45907
7	FLYWHEEL ASSEMBLY, COMPLETE	257-7555A11
8	SCREW, (.250-28 x .625), FLYWHEEL PLATE	10-32417
9	SCREW, FLYWHEEL HUB	10-89317
10	STATOR ASSEMBLY	398-5454A55
11	SCREW, (#10-24 x 1.50), STATOR	10-77363
12	LOCKWASHER, Stainless Steel, STATOR SCREW	10,13-26996
13	TRIGGER PLATE ASSEMBLY	89004A7
14	STARTER MOTOR ASSEMBLY, PRESTOLITE	50-88656
15	WASHER, STARTER MOTOR (UPPER) (PRESTOLITE)	12-93900
16	COLLAR, STARTER MOTOR (UPPER) (PRESTOLITE)	88738
17	COLLAR, STARTER MOTOR (LOWER) (PRESTOLITE)	88739
18	WASHER, STARTER MOTOR (LOWER) (PRESTOLITE)	12-93901
19	STARTER MOTOR ASSEMBLY (BOSCH)	50-893893	50-79472T 2, 50-79472 2
20	COLLAR, STARTER MOTOR (BOSCH)	23-8M0034918	23-8M0001391, 56703
21	STOP, Rubber, RUBBER - STARTER MOTOR	8M0043376	68042
22	SCREW AND LOCKWASHER, (.250-20 x .625) Stainless Steel, CABLE TO STARTER MOTOR	10-69035
23	LOCKWASHER, (.312-24), STARTER MOTOR TERMINAL	13-39107
24	NUT, (.312-18) Cad Plated, STARTER MOTOR TERMINAL	11-21908
25	COIL ASSEMBLY, Ignition, IGNITION	339-832757A4
26	COVER, IGNITION COIL	67614
27	SCREW, IGNITION COIL COVER	10-88856
28	CABLE ASSEMBLY, Ground, IGNITION COIL (BLACK)	84-60466A7
29	NUT, Brass, IGNITION COIL TERMINAL	10-32,11-45076
30	LEAD ASSEMBLY, HIGH TENSION	84-813715A1
31	BOOT, HIGH TENSION CABLE	332-2854T01
32	BOOT/TERMINAL KIT, HIGH TENSION CABLE	85-63709A1
33	SPARK PLUG (NGK-BUHW)	33-896329827	33-827C
34	CABLE ASSEMBLY, (6.00 Inches) Black, STARTER MOTOR TO GROUND (BLACK)	84-93388A1

FUEL PUMPS

Below is the parts list for Mercury 300 (3.4 LITRE) FUEL PUMPS:

Position No.	Part Name	OEM Number	Supersedes
1	PUMP ASSEMBLY, Fuel	88853A6
2	CHECK VALVE ASSEMBLY	21-30430A8
3	DIAPHRAGM ASSEMBLY	89031A2
4	NOT SOLD SEPARATE, FUEL PUMP	NSS
5	NOT SOLD SEPARATE, PULSE CHAMBER	NSS
6	NOT SOLD SEPARATE, FUEL PUMP	NSS
7	NOT SOLD SEPARATE, CHECK VALVE TO HOUSING	NSS
8	SCREEN, FUEL INLET	35-59072
9	O-RING, (1.237 x .103), FUEL INLET COVER	25-35480
10	NOT SOLD SEPARATE, COVER SCREW	NSS
11	RETAINER, CHECK VALVE	23004
12	SCREW, (#6-32 x .500), RETAINER ATTACHING	10-43723
13	BASE, FUEL PUMP	67623
14	CHAMBER, PULSE - FUEL PUMP	86449
15	COVER ASSEMBLY, FUEL FILTER	35-91078A1
16	SCREW, (#10-32 x .620) Stainless Steel, FUEL FILTER COVER (5/8")	10-89766
17	SCREW, (.190-32 x 1.62), FUEL PUMP (1-1/2")	10-88447
18	LOCKWASHER, Stainless Steel, FUEL PUMP SCREW	10,13-26996
19	SPRING, COMPRESSION	24-86207
20	RETAINER, SPRING	86026
21	CAP, SPRING END	86252
22	CHECK VALVE	21-42657A3
23	BRACKET, FUEL PUMP (STARBOARD)	90486
23	BRACKET, FUEL PUMP (PORT)	41156A1
24	SCREW, FUEL PUMP BRACKET	10-81516040
25	FITTING, FUEL LINE (90? )	22-19688
26	FITTING, FUEL LINE (STRAIGHT)	22-64705
27	TEE, FUEL LINE (TEE)	22-64706001
28	LINE, (57.00 Inches Bulk) (57")	32-8M0108355	32-8M0047428, 32-830756109, 32-99127109, 32-877821
29	CLAMP, FUEL LINE	54-68424
30	FITTING, Elbow (45 Degree) , INLET FUEL LINE (45? )	22-8M0123050
31	LINE, Fuel, INLET (6-3/4")	32-89020
32	FITTING, CHECK UNIT ADAPTOR (90? )	22-63981
33	ADAPTOR, CHECK UNIT	30186
34	STEM, CHECK UNIT ADAPTOR	30187
35	O-RING, ADAPTOR STEM	25-16524
36	SPRING, ADAPTOR STEM	24-30189
37	WASHER, ADAPTOR	30188
38	SCREW, (.250-20 x 1.250), ADAPTOR LOWER BRACKET	10-76596
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

GEAR HOUSING(DRIVE SHAFT)

Below is the parts list for Mercury 300 (3.4 LITRE) GEAR HOUSING(DRIVE SHAFT):

Position No.	Part Name	OEM Number	Supersedes
-	GEAR HOUSING ASSEMBLY, COMPLETE (LONG)	1659-9554A12
-	GEAR HOUSING ASSEMBLY, COMPLETE (EXTRA LONG)	1659-9554A6
1	No Longer Available	NLA
2	CONNECTOR ASSEMBLY, SPEEDOMETER	22-85822A10
3	INSERT, WATER (STARBOARD) Comment: EARLY MODELS	88375
4	INSERT, WATER (PORT) Comment: EARLY MODELS	88376
5	SCREW, INSERT TO GEAR HOUSING Comment: EARLY MODELS	10-4004376
6	NUT, INSERT TO GEAR HOUSING SCREW Comment: EARLY MODELS	11-89019
7	PIN, Dowel, GEAR HOUSING LOCATING	17-43044
8	FITTING, Grease, GEAR HOUSING	22-8M0169589
9	BUSHING, GEAR HOUSING	23-89525
10	SEAL, Oil, GEAR HOUSING	26-54925
11	BEARING, Roller, DRIVE SHAFT	31-88384T
11A	PLUG, Pipe (.0625-27), GEAR HOUSING	22-56800
12	DRIVESHAFT ASSEMBLY (LONG)	45-14880T
12	DRIVESHAFT ASSEMBLY (EXTRA LONG)	45-814809A1
13	No Longer Available	NLA
14	WASHER, PINION GEAR NUT	12-92721
15	NUT, (.625-18), PINION GEAR TO DRIVE SHAFT	11-35921
16	SHIM ASSEMBLY, Roller bearing to gear housing	15-88655A1
17	BEARING ASSEMBLY, Tapered Roller, DRIVE SHAFT	31-8M0103473	31-86748A 1
18	LOCKNUT, ROLLER BEARING	11-88710
19	O-RING, WATER PUMP	25-88657
20	BASE ASSEMBLY, Water Pump	46-88776A5
21	SEAL, WATER PUMP BASE	26-14381
22	GASKET, LOWER - WATER PUMP	27-907562
23	PLATE, FACE - WATER PUMP	90755
24	GASKET, UPPER - WATER PUMP	27-936662
25	BODY ASSEMBLY, Water Pump	46-90530A1
26	SEAL, RUBBER - WATER INLET TUBE	26-88397
27	GUIDE, WATER INLET TUBE	88581
28	IMPELLER, WATER PUMP	47-85647
29	KEY, IMPELLER DRIVE	28-88422
30	SCREW, (M6 x 20) Stainless Steel, WATER PUMP	10-8M0204741
31	INSULATOR, WATER PUMP SCREW	90753
32	SHAFT, SHIFT (LOWER)	44197A2
33	E RING, RETAINING - SHIFT SHAFT	53-29641
34	RING, Retaining	53-78907
35	O-RING, (.862 x .103), SHIFT SHAFT BUSHING	25-25439
36	BUSHING ASSEMBLY, SHIFT SHAFT	23-77631A2
37	SEAL, Oil, SHIFT SHAFT BUSHING	26-8M0204708
38	WASHER, RUBBER - SHIFT SHAFT BUSHING	12-77674
39	SCREW, (.375-16 x .250), GREASE FILLER	10-79953Q04
40	SCREW, Magnetic, DRAIN (MAGNETIC)	22-8M0058389	22-67892A06
41	WASHER, GREASE FILLER AND DRAIN SCREW	12-191833
42	SCREW, (#10-32 x 0.25), GEAR HOUSING	10-28653
43	WASHER, GEAR HOUSING	19643
--	GEAR HOUSING ASSEMBLY (LONG) Comment: ORDER WHEN ORDERING BASIC GEAR HOUSING OR GEAR SET.	1659-9554A12
--	GEAR HOUSING ASSEMBLY (XLONG) Comment: ORDER WHEN ORDERING BASIC GEAR HOUSING OR GEAR SET.	1659-9554A6
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

GEAR HOUSING(PROPELLER SHAFT)

Below is the parts list for Mercury 300 (3.4 LITRE) GEAR HOUSING(PROPELLER SHAFT):

Position No.	Part Name	OEM Number	Supersedes
-	GEAR HOUSING ASSEMBLY, COMP. (LONG)	1659-9554A12
-	GEAR HOUSING ASSEMBLY, COMP. (EXTRA LONG)	1659-9554A6
1	No Longer Available	NLA
44	SHIFT CAM	789562
45	FOLLOWER ASSEMBLY, CAM	89594A1
46	ROD, CLUTCH ACTUATOR	88523A1
47	SPRING, COMPRESSION	24-88579
48	WASHER, COMPRESSION SPRING	12-78910
49	PIN, SPRING LOCATOR	17-8M0084245	17-78906
50	SHIM SET, BEARING OUTER RACE (.002-3-5-10)	15-47397A1
51	BEARING ASSEMBLY, Tapered Roller	31-78172A1
52	No Longer Available	NLA
53	BEARING, Roller, FORWARD GEAR	31-73363T
54	BEARING, Roller, FORWARD GEAR	31-88583
55	RATCHET, SLIDING CLUTCH	52-823580	52-816191, 52-88423
56	PIN, Cross, RATCHET TO PROPELLER SHAFT	17-8M0084243	17-78905
57	PIN, Detent, RATCHET	17-78909
58	SPRING, RETAINING - CROSS PIN	24-78962
59	PROPELLER SHAFT	44-93848
60	No Longer Available	NLA
61	RING, THRUST - BEARING CARRIER	681001
62	BEARING, Ball, - REVERSE GEAR	30-88957T
63	O-RING, BEARING CARRIER	25-8M0214920
64	CARRIER ASSEMBLY, Bearing	88603A4
65	BEARING, Needle, BEARING CARRIER	31-30956T
66	SEAL, BEARING CARRIER	26-8M0204670
67	KEY, LOCATING - BEARING CARRIER	28-30281
68	TAB WASHER, GEAR HOUSING COVER	14-79447
69	RETAINER, GEAR HOUSING	8M2011027	79448
70	COVER, ANODE	89026
71	SCREW, (.437-14 x 1.50) Stainless Steel, ANODE COVER	10-47658
72	RUDDER	95781
73	BUSHING, RUDDER	23-89514
74	SCREW, (.437-14 x 3.00), Gear housing to drive shaft housing	10-95705
75	WASHER, GEAR HOUSING SCREW	12-45176
76	THRUST HUB	12-835467Q01	12-835467 1
77	WASHER, Splined, SPLINED - PROPELLER NUT	12-31211Q03
78	TAB WASHER, PROPELLER NUT	14-816629Q	14-816629, 14-31210, 14-816629B
79	PROP NUT KIT, (.750-16)	11-52707Q1
--	GEAR HOUSING ASSEMBLY (LONG) Comment: ORDER WHEN ORDERING BASIC GEAR HOUSING OR GEAR SET.	1659-9554A12
--	GEAR HOUSING ASSEMBLY (XLONG) Comment: ORDER WHEN ORDERING BASIC GEAR HOUSING OR GEAR SET.	1659-9554A6
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

HYDRASTEER COMPONENTS

Below is the parts list for Mercury 300 (3.4 LITRE) HYDRASTEER COMPONENTS:

Position No.	Part Name	OEM Number	Supersedes
1	TILLER ARM	957791
2	SCREW, TILLER ARM	10-93348
3	NUT, Stainless Steel, TILLER ARM SCREW	10-32,11-859124	11-45812
4	SCREW, (.250-20 x 1.375), CLAMPING - TILLER ARM	10-69067
5	NUT, (.250-20), CLAMPING SCREW	11-8267098
6	CABLE, Steering (45")	965211
6	CABLE, Steering (50")	965212
7	END, Cable	89522
8	NUT, (.250-20), STEERING CABLE	11-64015
9	SCREW, (M5 x 20), STEERING CABLE ATTACHING	10-400036
10	CLAMP, STEERING CABLE ATTACHING	54-26550
11	SCREW, STEERING CABLE CLIP	10-40019107
12	C WASHER, CLIP SCREW	8M0084613	69205
13	BRACKET, CABLE	89508
14	SCREW, (#10-32 x .875), CABLE RETAINER STRAP	10-690201
15	STRAP, CABLE RETAINER	93690
16	PIN, Roll, CABLE BRACKET	17-69745
17	COVER PLATE	90733
18	SWIVEL ASSEMBLY	89509A1
19	SCREW, (.375-24 x 1.5), CABLE SWIVEL	10-94319
20	WASHER, (.406 x .734 x .063) Stainless Steel, CABLE SWIVEL SCREW	12-34931
21	BUSHING ASSEMBLY, FLANGED	23-89515A1
22	BUSHING ASSEMBLY, FLANGED	23-89517A1
23	BUSHING ASSEMBLY, FLANGED	23-89516A1
24	PLATE, SWIVEL	89513
25	NUT, CABLE SWIVEL SCREW	11-33826
--	HYDRASTEER LOCKING KIT	93538A1

HYDRAULIC PUMP AND MOUNTING BRACKETS

Below is the parts list for Mercury 300 (3.4 LITRE) HYDRAULIC PUMP AND MOUNTING BRACKETS:

Position No.	Part Name	OEM Number	Supersedes
1	PUMP ASSEMBLY, Hydraulic Comment: (DESIGN I)	823653A9
2	BRACKET Comment: (DESIGN I)	90318
3	SCREW, (.312-18 x .625) (5/8") Comment: (DESIGN I)	10-90285
4	WASHER, (.330 x .750 x .060) Stainless Steel Comment: (DESIGN I)	12-56720
5	NUT, Comment: (DESIGN I)	10-32,11-8M0204718
1A	PUMP ASSEMBLY, Hydraulic Comment: (DESIGN II)	823653A9
2	BRACKET Comment: (DESIGN II)	818567
3	SCREW, (.312-18 x 1.12) (1-1/8") Comment: (DESIGN II)	10-38837
4A	WASHER Comment: (DESIGN II)	12-57792
5A	SPACER Comment: (DESIGN II)	23-34948
5B	CABLE ASSEMBLY, (4.00 Inches) Comment: (DESIGN II)	84-86322A24
5C	SCREW, (10-16 x .75) (3/4") Comment: (DESIGN II)	10-92051
6	TERMINAL BLOCK	86-45915
7	SCREW, (#10-16 x .375), WIRE TO TERMINAL BLOCK (3/8")	10-62568
8	CABLE ASSEMBLY, (6.00 Feet) Black-Negative, BLACK (NEGATIVE)	84-79138A9
9	BREAKER, Circuit - 20 Ampere (20 AMP)	88-8M0085705	88-79149
10	SCREW, (#10-24 x .375), CIRCUIT BREAKER	10-8M0113176
11	NUT, Brass, CIRCUIT BREAKER TERMINAL	10-32,11-45076
12	WIRE, SOLENOID TO SOLENOID (RED)	84-87379A5
13	HARNESS ASSEMBLY, HYDRAULIC PUMP	84-79147A3
14	RETAINER, HARNESS TO MOUNTING BRACKET	88075
15	SOLENOID, Starter	8M0185622
16	SCREW, (.250-20 x .500) Stainless Steel, STARTER SOLENOID TO BRACKET (3/8")	10-41508
17	LOCKWASHER, Stainless Steel, STARTER SOLENOID TERMINAL	8,8,13-26995
18	NUT, Brass, STARTER SOLENOID TERMINAL	8-32,8-32,11-26419
19	LOCKWASHER, (.250) Stainless Steel, Starter solenoid terminal (1/4")	13-26992
20	NUT, (.250-20) Brass, STARTER SOLENOID TERMINAL (1/4-20)	11-94330
21	BOOT, RUBBER - STARTER SOLENOID TERMINAL	85-861680	85-96535
22	LINK, SOLENOID TO SOLENOID	94275
23	CABLE ASSEMBLY, (5.50 Inches) Black, SOLENOID TO SOLENOID (BLACK)	84-86322A15
24	CABLE ASSEMBLY, Red-Positive (RED) (POSITIVE)	84-79139A12
25	FUSE ASSEMBLY, 110 Ampere (110 AMP)	88-79023T10
26	WASHER, Phenolic (.27 x .81 x .062), FUSE TERMINAL	12-96457
27	NUT, (.250-28), FUSE TERMINAL	11-21825
28	PLATE, MOUNTING	87760T
29	SCREW, (.312-18 x .750) Stainless Steel, MOUNTING PLATE TO BRACKET (3/4")	10-39349
30	LOCKWASHER, (.312), MOUNTING PLATE SCREW	13-8M0204647
31	SCREW, (.375-16 x .62), HYDRAULIC PUMP (5/8")	10-90271
32	LOCKWASHER, (.375), HYDRAULIC PUMP SCREW	13-58643
33	BRACKET, HYDRAULIC PUMP	87762
34	BOLT, (.375-24 x 1.75), BRACKET TO TRANSOM (3-1/2")	10-31830
35	LOCKWASHER, (.375), BRACKET SCREW	13-58643
36	NUT, BRACKET SCREW	11-46335
37	SCREW, (#10-24 x .625), RETAINER	10-48409

HYDRAULIC PUMP(DESIGN I)

Below is the parts list for Mercury 300 (3.4 LITRE) HYDRAULIC PUMP(DESIGN I):

Position No.	Part Name	OEM Number	Supersedes
-	PUMP ASSEMBLY, Hydraulic	823653A9
1	ADAPTOR	89492T
2	COUPLING	803852	89493
3	MANUAL RELEASE (INCLUDES 2 "O" RINGS)	96598A1
3	MANUAL RELEASE (INCLUDES 3 "O" RINGS)	96598A1
4	PUMP (INCLUDES SCREWS)	89495
5	FILTER	35-89496
6	O-RING, MOTOR END	25-89498
7	O-RING, RESERVOIR END	25-89497
8	DIPSTICK	89499
9	RESERVOIR	90587T
10	SCREW, RESERVOIR (INCLUDES "O" RING)	10-90588
11	THRU STUD (SHORT)	16-90589
11	THRU STUD (LONG)	16-90590
--	MOTOR, HYDRAULIC PUMP	17649A02
12	END FRAME, DRIVE END	89484
13	ARMATURE	89485
14	WASHER, THRUST - ARMATURE	12-89482
15	FIELD AND FRAME	89486
16	BRUSH CARD	89487
17	END FRAME, COMMUTATOR END	89488
18	THRU BOLT, MOTOR (4-1/4")	10-89483
18	THRU BOLT, MOTOR (4-9/16")	10-89489
19	NUT, THRU BOLT AND STUD	11-89481
--	REPAIR KIT, Relief Valve	812501A1
--	REPAIR KIT, Overhaul	99073A2

HYDRAULIC PUMP(DESIGN II)

Below is the parts list for Mercury 300 (3.4 LITRE) HYDRAULIC PUMP(DESIGN II):

Position No.	Part Name	OEM Number	Supersedes
-	PUMP ASSEMBLY, Hydraulic	823653A9
1	ADAPTOR	801786
2	COUPLING	803852	89493
3	MANUAL RELEASE	96598A1
4	PUMP (INCLUDES SCREWS)	801787
5	FILTER	35-89496
6	O-RING	25-89498
7	O-RING	25-89497
8	DIPSTICK	89499
9	RESERVOIR	90587T
10	SCREW (INCLUDES O-RING)	10-90588
-	MOTOR	17649A02
11	END CAP ASSEMBLY (W/BEARING)	17632T
12	SCREW	10-17626
13	O-RING	25-17625
14	SCREW	10-17621
15	HOLDER KIT	17633
16	BRUSH KIT	17631A1
17	ARMATURE	17623
18	WASHER	12-17653
19	FIELD AND FRAME ASSEMBLY	17624
20	COVER ASSEMBLY (W/BEARING)	17622
21	SCREW	10-823444
--	REPAIR KIT, Relief Valve	812501A1
--	REPAIR KIT, Overhaul	99073A2

MISCELLANEOUS PARTS/ACCESSORIES

Below is the parts list for Mercury 300 (3.4 LITRE) MISCELLANEOUS PARTS/ACCESSORIES:

Position No.	Part Name	OEM Number
--	3.4 LITRE	90-44507
--	DECAL SET	37-13487A89
--	OWNERS GUIDE (BLACK)	90-112273

SOUND ATTENUATOR AND COWL BRACKET

Below is the parts list for Mercury 300 (3.4 LITRE) SOUND ATTENUATOR AND COWL BRACKET:

Position No.	Part Name	OEM Number	Supersedes
1	BRACKET, COWL SUPPORT	883644
2	HOUSING, COWL HINGE (PORT)	85651
2	HOUSING, COWL HINGE (STARBOARD)	85650
3	SCREW, COWL HINGE HOUSING	10-76621
4	WASHER, HOUSING SCREW	12-20583
5	BRACKET, REAR COWL	88361T
6	SEAL, REAR COWL BRACKET	14900A1
7	SEAL, REAR COWL BRACKET	88356
8	SCREW, (M6 x 50), REAR COWL BRACKET	10-4000335
9	WASHER, (6.60 X 12.5 X 1.5 mm -SS), REAR COWL BRACKET SCREW	12-4002315
10	PLATE, SOUND ATTENUATOR	13944A1
11	BRACKET, COWL MOUNTING (UPPER)	67245T
12	GROMMET, COWL MOUNTING BRACKET	25-67272
13	MOUNT	90435
14	WASHER, MOUNT	12-21249
15	NUT, (.250-28), MOUNT	11-8267089
16	GASKET, PLATE	27-898192
17	COVER, SOUND ATTENUATOR	885031
18	SCREW, COVER	10-40062127
19	BRACKET, COWL SUPPORT - FRONT	96854T
20	GROMMET, FRONT BRACKET	25-67272
21	RETAINER, CABLE	88621
22	SCREW, (#10-32 x 1.00) Stainless Steel, RETAINER TO FRONT BRACKET	10-34994
23	SEAL, FRONT BRACKET	88357
24	BOOT, FUEL ADAPTOR	88352
25	CLAMP, FRONT BRACKET	54-26550
26	SCREW, (.190-24 x .500), CLIP	10-78291
27	C WASHER, CLIP SCREW	8M0084613	69205
28	HOUSING, COWL LATCH	67241
29	SCREW, (10-16 x .75), HOUSING TO FRONT BRACKET	10-92051
30	LATCH	76264
31	SPRING, COWL LATCH	24-85367
32	MOUNT	90435
33	WASHER, MOUNT	12-21249
34	NUT, (.250-28), MOUNT	11-8267089
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

STARTER MOTOR ASSEMBLY(BOSCH)

Below is the parts list for Mercury 300 (3.4 LITRE) STARTER MOTOR ASSEMBLY(BOSCH):

Position No.	Part Name	OEM Number	Supersedes
-	STARTER MOTOR ASSEMBLY	50-893893	50-79472T 2, 50-79472 2
1	DRIVE KIT	90645
2	DRIVE	13310T1
3	PLATE, DRIVE END	75660
4	BOLT, THRU	13313
5	ARMATURE	13312
6	BRUSH/SPRING KIT	898265016	75384, 75384 1
7	END CAP, COMMUTATOR	13314

STARTER MOTOR ASSEMBLY(PRESTOLITE)

Below is the parts list for Mercury 300 (3.4 LITRE) STARTER MOTOR ASSEMBLY(PRESTOLITE):

Position No.	Part Name	OEM Number
-	STARTER MOTOR ASSEMBLY	50-88656
1	BENDIX DRIVE	392-9129
2	HOUSING ASSEMBLY, DRIVE END	392-9133
3	BEARING	392-9134
4	ARMATURE	392-9128
5	THRUST WASHER PACKAGE	392-5730
6	COIL, Field	392-9130
7	BRUSH PLATE	392-5726
8	SPRING SET	392-5727
9	BRUSH SET	392-6181
10	TERMINAL STUD PACKAGE	392-5728
11	HEAD, COMMUTATOR END	392-9131
12	BEARING	392-9132
13	THRU BOLT	392-9136
14	STOP KIT, Pinion	392-9135

SWIVEL BRACKET AND STEERING ARM

Below is the parts list for Mercury 300 (3.4 LITRE) SWIVEL BRACKET AND STEERING ARM:

Position No.	Part Name	OEM Number	Supersedes
1	SWIVEL BRACKET ASSEMBLY	1491-9225A3
2	SEAL, Oil, SWIVEL BRACKET (LOWER)	26-87735
3	BUSHING, SWIVEL BRACKET (LOWER AND UPPER)	23-818764	23-67669
4	O-RING, SWIVEL BRACKET (UPPER)	25-33466
5	SPACER, SWIVEL BRACKET (UPPER)	23-67668
6	FITTING, Grease, GREASE	22-8M0169589
7	GROMMET, SWIVEL BRACKET	25-88341
8	SEAL, Oil, SWIVEL BRACKET	26-85023
9	WASHER, TILT LOCK LEVER	12-87161
10	O-RING, (.364. x .070), TILT LOCK LEVER	25-48171
11	LEVER ASSEMBLY, TILT LOCK (PORT)	85030A2
11	LEVER ASSEMBLY, TILT LOCK (STARBOARD)	85028A2
12	BUSHING, TILT LEVER RELEASE	23-86600
13	SPRING, TILT LEVER RELEASE	24-85367
14	PLUNGER, TILT LEVER RELEASE	41052
15	STUD, PLUNGER	16-88876
16	KNOB, PLUNGER	86603
17	COUPLING, TILT LOCK LEVER	864751
18	PIN, Roll, LEVER TO COUPLING	17-69745
19	SPRING, TENSION - COUPLING	24-88049
20	COTTER PIN, COUPLING SPRING	18-93861
21	WAVE WASHER, BOTTOM YOKE	13-78854
22	YOKE, Bottom	96852T
23	RING, Retaining, BOTTOM YOKE	53-67684
24	WASHER, THRUST - SWIVEL BRACKET	12-67670
25	SWIVEL PIN ASSEMBLY, Steering Arm	17-840792A1
26	SCREW, STEERING ARM TO UPPER MOUNT	10-88659
27	MOUNT, RUBBER (UPPER)	77326
28	WASHER, UPPER MOUNT BOLT	12-66921
29	WASHER, UPPER MOUNT BOLT	12-78688
30	NUT, (.437-20) Stainless Steel, UPPER MOUNT BOLT	11-8M0204653
31	BUMPER, Top Yoke, STEERING ARM	88882
32	LINK ASSEMBLY, Steering	92876A12
33	SCREW, STEERING LINK TO STEERING ARM (1-1/8")	10-849838	10-14000
34	NUT, STEERING LINK SCREW	11-33826
35	WASHER, (.406 x .734 x .063) Stainless Steel, STEERING LINK TO STEERING ARM	12-34931
36	SENDER ASSEMBLY, Trim	86485A5
37	HARNESS ASSEMBLY, TRIM SENDER	84-65017A15
36	TILT SWITCH ASSEMBLY	86485A6
37	HARNESS ASSEMBLY, TILT SWITCH	84-65017A14
38	STRAP, SWITCH AND SENDER	88342
39	SCREW, (#10-32 x .500), STRAP TO SWIVEL BRACKET	10-87926
40	J CLIP, SWITCH AND SENDER LEADS	54-54457
41	SCREW, (.250-28 x .500), CLAMP TO SWIVEL BRACKET	10-98256
42	WASHER, (.281 x .500 x .060) Stainless Steel, CLAMP SCREW	12-8M0204649
43	SPACER, UPPER MOUNT BOLT	23-96851
44	CLAMP, UPPER MOUNT	150311
45	SCREW, UPPER MOUNT CLAMP	10-81516290
--	GASKET SET Comment: CONTENTS INDICATED BY FOOTNOTE 11.	27-88605A80

TACHOMETER, TRIM GAUGE AND ALARM HORN

Below is the parts list for Mercury 300 (3.4 LITRE) TACHOMETER, TRIM GAUGE AND ALARM HORN:

Position No.	Part Name	OEM Number	Supersedes
1	TACHOMETER	79-895283Q43	79-825348A 1
2	BRACKET, MOUNTING	79101T
3	LIGHT BULB, Wedge Base (14V - .19W)	88-72729
4	SOCKET, Light Bulb	88-79888
5	NUT, Brass	8-32,8-32,11-26419
6	CABLE ASSEMBLY, (1.50 Feet) Black, TRIM GAUGE (BLACK - 1-1/2")	84-86322A7
6	CABLE ASSEMBLY, (1.50 Feet) Purple, TRIM GAUGE (PURPLE - 1-1/2")	84-86323A5
7	TRIM GAUGE	79-895292Q41	79-825338A 1, 79-825338A 3
8	BRACKET, MOUNTING - TRIM GAUGE	79480
9	LIGHT BULB, Wedge Base (14V - .19W), TRIM GAUGE	88-72729
10	SOCKET, Light Bulb, TRIM GAUGE	88-79888
11	NUT, Brass, TRIM GAUGE TERMINAL (8-32)	8-32,11-26419
12	LOCKWASHER, Stainless Steel, TRIM GAUGE TERMINAL	8,8,13-26995
13	HARNESS ASSEMBLY, Tachometer (5.00 Feet)	84-86396A8
14	HORN ASSEMBLY, Alarm	68878A6
15	COVER, ALARM HORN	68879
16	SPACER, ALARM HORN	23-8M0084588
17	WASHER, (.200 x .440 x .032), ALARM HORN	12-24676
18	SCREW, (#10 x 1.00), ALARM HORN	10-35401
19	TEMPERATURE GAUGE	79-895287Q41	79-825326A 1
20	LIGHT BULB, Wedge Base (14V - .19W)	88-72729
21	SOCKET, Light Bulb	88-79888
22	WASHER	12-26427
23	BRACKET	79480
24	NUT, Brass	8-32,11-26419
25	CABLE ASSEMBLY, (2.00 Feet) Purple (PURPLE)	84-86323A2
25	CABLE ASSEMBLY, (17.00 Inches) Black (BLACK)	84-61600A16
25	CABLE ASSEMBLY, (23.00 Feet) Tan/Blue (TAN/BLUE) - 23'	84-88032A3
26	SENDER, Temperature	12415
27	COVER, SENDER	12419
28	PLUG	19-12431T

THROTTLE LEVER

Below is the parts list for Mercury 300 (3.4 LITRE) THROTTLE LEVER:

Position No.	Part Name	OEM Number	Supersedes
1	PIVOT, TRIGGER PLATE	74897T
2	BALL JOINT ASSEMBLY, TRIGGER PLATE	62459T
3	NUT, Brass, LINK ROD	10-32,11-45076
4	ROD, TRIGGER PLATE	76035
5	NUT, , BALL JOINT	10-32,11-46438
6	LEVER, SPARK ADVANCE	89811
7	SCREW, SPARK ADVANCE LEVER - STOP	10-75168
8	NUT, (.250-28) Stainless Steel, SPARK ADVANCE LEVER STOP SCREW	11-29598
9	CAP, SPARK ADVANCE LEVER STOP SCREW	52023
10	SCREW, SPARK ADVANCE LEVER - STOP (1-1/4")	10-12405
11	NUT, Stainless Steel, SPARK ADVANCE LEVER STOP SCREW	10-32,11-68219
12	CAP, SPARK ADVANCE LEVER STOP SCREW	48039
13	LEVER, THROTTLE CONTROL	94818
14	SCREW, (.375-16 x 1.75), THROTTLE LEVER/ADVANCE LEVER (1-3/4")	10-818165	10-55337
15	BUSHING, THROTTLE LEVER	23-55164
16	BUSHING, SPARK ADVANCE LEVER	23-55171
17	SPRING, THROTTLE AND SPARK ADVNACE LEVER	24-68784
18	WASHER, SPARK ADVANCE LEVER	12-68410
19	SCREW, THROTTLE LEVER - STOP	10-75168
20	NUT, (.250-28) Stainless Steel, THROTTLE LEVER STOP SCREW	11-29598
21	CAP, THROTTLE LEVER STOP SCREW	52023
22	LATCH, CABLE	39483
23	SCREW, (.250-28 x .880), CABLE LATCH TO THROTTLE LEVER	10-69026
24	WASHER, CABLE LATCH SCREW	12-69057
25	SPRING, CABLE LATCH TO THROTTLE LEVER	24-20099
26	NUT, (.250-28), CABLE LATCH SCREW	11-826709109	11-33825, 11-35045
27	ROD, THROTTLE CONTROL	93259
28	BARREL, THROTTLE CONTROL ROD	8M0221994
29	CAM, Throttle	936941
30	BUSHING, THROTTLE CAM	23-26856

TRANSOM BRACKETS

Below is the parts list for Mercury 300 (3.4 LITRE) TRANSOM BRACKETS:

Position No.	Part Name	OEM Number	Supersedes
1	BRACKET, TRANSOM (PORT)	1494-7476T1
2	BRACKET, TRANSOM (STARBOARD) (#1495-7478 1)
3	SCREW, (.500-20 x 6.500), BRACKET TO TRANSOM (6-1/2")	10-677552
4	SCREW, (.500-20 x 4.500), BRACKET TO TRANSOM (4-1/2")	10-8M0149747
5	WASHER, (1.5 x 3.05 x 0.13) Stainless Steel, BRACKET SCREW	12-8M0204648
6	NUT, (.500-20), BRACKET SCREW	11-91962
7	BOLT, (.500-20 x 11.00), TILT	10-87180
8	NUT, (.500-20), TILT BOLT	11-82671317
9	TILT TUBE	99170A2
10	WASHER, TILT TUBE	12-85022
11	NUT, (.875-14), TILT TUBE (7/8-14)	11-858869	11-30499
11	NUT, (1.00-14), TILT TUBE (1"-14)	11-859133	11-34862, 11-90068F 3, 11-90068F 4
12	O-RING, (.612 x .103), TILT TUBE	25-45711
13	PLATE, PIVOT PIN	85026T
14	SCREW, (.250-20 x .750), PLATE TO TRANSOM BRACKET	10-28636
15	WASHER, (.281 x .500 x .060) Stainless Steel, PLATE SCREW	12-8M0204649
16	SPACER, TRANSOM BRACKET	85035T
17	SCREW, (.250-20 x 2.00), SPACER TO TRANSOM BRACKET	10-70732
18	WASHER, (.281 x .500 x .060) Stainless Steel, SPACER SCREW	12-8M0204649
19	PLATE ASSEMBLY, TRANSOM BRACKET	89949A1
20	SCREW, (.250-20 x .875), PLATE TO TRANSOM BRACKET	10-90192
21	CLAMP, HYDRAULIC HOSE	54-88512
21	CLAMP, WIRING HARNESS	54-75275
22	SCREW, (#10-24 x .500), CLAMP TO TRANSOM BRACKET	10-88829
24	TRIM CYLINDER ASSEMBLY (79879A1 REPAIR KIT)	79610A6
25	BUSHING, TRIM CYLINDER	23-86489
26	WASHER, TRANSOM BRACKET	12-85022
27	SPRING, TRIM CYLINDER	24-30316
28	PIN, Pivot, TRIM CYLINDER	17-85020T
29	SHAFT, TRIM CYLINDER	85024
30	BEARING, TRIM SHAFT	23-86637
31	PIN, TRIM CYLINDER	17-91862
32	HOSE, HYDRAULIC (PORT)	32-89024A1
32	HOSE, HYDRAULIC (STARBOARD)	32-89023A2
33	GROMMET, HYDRAULIC HOSES	25-12602002
34	CONNECTOR, HYDRAULIC HOSE	22-87207
35	COVER, INLET - HYDRAULIC HOSE	87871T
36	GASKET, INLET COVER	27-87775
37	GROMMET, INLET COVER	25-45507
38	SCREW, (#10-32 x 1.250), INLET COVER	10-36070
39	LOCKWASHER, Stainless Steel, INLET COVER SCREW	10,13-26996
40	NUT, Stainless Steel, INLET COVER SCREW	10-32,11-68219

WIRING HARNESS, STARTER SOLENOID AND RECTIFIER

Below is the parts list for Mercury 300 (3.4 LITRE) WIRING HARNESS, STARTER SOLENOID AND RECTIFIER:

Position No.	Part Name	OEM Number	Supersedes
1	PLATE, IGNITION	91882
2	SCREW, (M8 x 35), IGNITION PLATE	10-40001140
3	LOCKWASHER, (.312), IGNITION PLATE SCREW	13-8M0204647
4	CABLE ASSEMBLY, Black, GROUND (BLACK)	84-65999A2
5	J CLIP, FUSE HOLDER - PLATE SCREW	54-47483
6	WASHER, IGNITION PLATE SCREW	12-36042
7	WASHER, (Rubber), IGNITION PLATE SCREW (RUBBER)	12-67264
8	BUSHING, IGNITION PLATE SCREW	23-67268
9	SWITCH ASSEMLBY	87-33386A3
10	SCREW, (.190-32 x .62), Mercury switch to ignition plate (5/8")	10-38055
11	NUT, Brass, MERCURY SWITCH TERMINAL	10-32,11-45076
12	PIN, Roll, MERCURY SWITCH	17-36242
13	TERMINAL BLOCK, IGNITION PLATE	86-66986
14	SCREW, (#10-16 x .440), TERMINAL BLOCK ATTACHING	10-69079
15	SCREW, (.190-32 x .380), LEADS TO TERMINAL BLOCK	10-37572
16	HARNESS ASSEMBLY, ENGINE	84-92432A2
17	FUSE, 20 Ampere	88-8M0207796
18	CABLE ASSEMBLY, FUSE	84-95084A2
19	SENDER, Temperature (19.50 Inch)	78799
20	COVER, TEMPERATURE SENDER	89565
21	CLAMP, WIRING HARNESS	88751
22	SCREW, (.250-20 x .750), CLAMP TO IGNITION PLATE	10-28636
23	WASHER, CLAMP SCREW	12-20533
24	RECTIFIER ASSEMBLY	8M0058226	816770T, 816770, 62351A 1, 83-70350A 1, 83-70350A 3
25	SCREW, (.190-32 x .62), RECTIFIER AND REGULATOR	10-38055
26	NUT, Brass, RECTIFIER AND REGULATOR TERMINALS	10-32,11-45076
27	WIRE, REGULATOR TO RECTIFIER (RED)	84-88808A4
27	CABLE ASSEMBLY, REGULATOR TO RECTIFIER (YELLOW)	84-88809A4
28	VOLTAGE REGUALTOR	88825A7
29	CABLE ASSEMBLY, Battery - Positive, POSITIVE	84-88439A14
29	CABLE ASSEMBLY, Battery - Negative, NEGATIVE	84-88439A2
30	SOLENOID, Starter	89-853654A1
31	SCREW, (.250-20 x .62), SOLENOID TO IGNITION PLATE (5/8")	10-20540
32	LOCKWASHER, (.250) Stainless Steel, Solenoid to ignition plate screw	13-26992
33	WIRE, SOLENOID TO STARTER MOTOR (YELLOW)	84-93389A2
34	LOCKWASHER, (.312-24), SOLENOID TERMINALS (5/16")	13-39107
35	NUT, (.312-18) Cad Plated, SOLENOID TERMINALS (5/16-18)	11-21908
36	LOCKWASHER, Stainless Steel, SOLENOID TERMINALS	10,10,13-26996
37	NUT, Stainless Steel, SOLENOID TERMINALS (10-32)	10-32,11-68219
38	WIRE, SOLENOID TO RECTIFIER (RED)	84-79139A15
39	HARNESS ASSEMBLY, COIL TO SWITCH BOX (#2, 4 AND 6)	84-92485A2
39	HARNESS ASSEMBLY, COIL TO SWITCH BOX (#1, 3 AND 5)	84-92486A2
40	SWITCHBOX ASSEMBLY	332-7778A12
41	SCREW, SWITCH BOX TO IGNITION PLATE	10-90818
42	BUSHING, SWITCH BOX SCREW	23-91912
43	NUT, Brass, SWITCH BOX TERMINAL	10-32,11-45076
44	SCREW, (#10-16 x .375), WIRE ATTACHING	10-62568

Download this page as PDF: Click here

For Mercury Owners:

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

Mercury / Mercruiser / Mariner Parts from JLM Marine

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.