Mercury 250/275 (0C101891 AND UP) Parts & Diagrams

OEM and aftermarket replacement parts for Mercury 250/275. Scroll down for exploded parts diagrams (35), specifications, and maintenance reference.

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8M0120867 Maintenance Kit for Mercury 8HP 9.9HP 15HP 20HP Command Thrust | JLM Marine
8M0120867 Maintenance Kit for Mercury 8HP 9.9HP 15HP 20HP Command Thrust | JLM Marine
$68.50
$68.50
files/kit-23KM773-4N_fffc370d-57ef-443b-8e26-770e764dd409.pngDefault Title
$68.50
8M0181316 Maintenance Kit for Mercury 8HP 9.9HP | JLM Marine
8M0181316 Maintenance Kit for Mercury 8HP 9.9HP | JLM Marine
$68.50
$68.50
files/kit-23KM772-4N_3ab7931f-955d-4041-a46b-266974344a7b.pngDefault Title
$68.50
8M0181315 Maintenance Kit for Mercury 4HP 5HP 6HP 4-Stroke | JLM Marine
8M0181315 Maintenance Kit for Mercury 4HP 5HP 6HP 4-Stroke | JLM Marine
$68.50
$68.50
files/kit-23KM771-4N_78ebfc47-2fbf-460e-834a-362ab0b58149.pngDefault Title
$68.50
23KH763-4N Kit Image
06211-ZZ0-505 Maintenance Kit for Honda BF80A BF100A | JLM Marine
$82.50
$82.50
files/kit-23KH763-4N.pngDefault Title
$82.50
06211-ZY2-506 Maintenance Kit for Honda BF175A BF200A BF225A | JLM Marine
06211-ZY2-506 Maintenance Kit for Honda BF175A BF200A BF225A | JLM Marine
$83.50
$83.50
files/kit-23KH762-4N.pngDefault Title
$83.50
06211-ZY5-505 Maintenance Kit for Honda BF135A BF150A | JLM Marine
06211-ZY5-505 Maintenance Kit for Honda BF135A BF150A | JLM Marine
$82.50
$82.50
files/kit-23KH761-4N.pngDefault Title
$82.50
06211-ZW5-505 Maintenance Kit for Honda BF115A BF130A | JLM Marine
06211-ZW5-505 Maintenance Kit for Honda BF115A BF130A | JLM Marine
$82.50
$82.50
files/kit-23KH760-4N.pngDefault Title
$82.50
06211-ZW0-505 Maintenance Kit for Honda BF75A BF90A | JLM Marine
06211-ZW0-505 Maintenance Kit for Honda BF75A BF90A | JLM Marine
$71.50
$71.50
files/kit-23KH758-4N.pngDefault Title
$71.50

Mercury 250/275 (0C101891 AND UP) Parts & Diagrams

🔎 Mercury 250/275 Reference Library — Exploded parts diagrams (35 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 250/275 is a 4-Stroke, V8 64-degree, DOHC, 32-valve outboard motor. Designed for large center-consoles, offshore sport-fishing boats, and multi-engine configurations.

Quick Reference Specifications

Specification Value
Engine Type 4-Stroke, V8 64-degree, DOHC, 32-valve
Horsepower 250 HP
Displacement 4600 cc (4.6L / 279 CID)
Bore x Stroke 92 mm x 86 mm (3.62 in. x 3.38 in.)
Spark Plug (Type & Gap) NGK LKAR7C-9
Engine Oil Capacity 7.0 L (7.4 qt)
Recommended Engine Oil Mercury FourStroke Oil 25W-40 (NMMA FC-W SAE 10W-30)
Gear Case Oil Capacity 802 mL (27.1 oz)
Idle Speed (in gear) 600 RPM
Full Throttle RPM Range 5200-6000
Fuel Unleaded Gasoline, 87 Octane min.

Always verify specifications against your owner's manual for your specific serial number range.

Common Issues & Recommended Parts

Below are common maintenance scenarios for the Mercury 250/275:

  • Water Pump / Overheating: If the tell-tale stream is weak or absent, the water pump impeller likely needs replacement. Inspect annually or every 100 hours. → Recommended: Water Pump Impeller Kit
  • Engine Oil / Maintenance Light: 4-stroke engines require regular oil and filter changes. Use marine-grade oil rated for your engine. Change every 100 hours or annually. → Recommended: Oil Filter, Engine Oil
  • Fuel Injector Issues (EFI models): Rough idle or misfires may indicate clogged fuel injectors. Use fuel stabilizer and clean injectors periodically. → Recommended: Fuel Injector, Fuel Filter
  • Gear Case Oil Leak: Check lower unit seals if gear oil appears milky (water contamination). Replace seals and gaskets during lower unit service. → Recommended: Lower Unit Seal Kit, Drain Plug Gaskets
  • Anode Corrosion: Inspect sacrificial anodes regularly, especially in saltwater. Replace when 50% depleted to protect against galvanic corrosion. → Recommended: Zinc/Aluminum Anode Kit

Parts Diagrams & OEM Part Numbers

Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Mercury 250/275.

▶CARBURETOR ASSEMBLY (14 parts) CARBURETOR ASSEMBLY
Ref OEM Part # Part Name
1 1387-7785A66 CARBURETOR (8-6) Comment: 250-WO-8A
2 1395-6201 JET, VENT BOWL (.080-W9-8A)
4 1395-9122 COVER PLATE
6 1395-9481 VENTURI (WO-9/9A)
7 1395-9478 FUEL BOWL (WO-8A-2/3/4/5/6)(WO-9/9A-2/4/6)
9 1395-6199 PLUG, MAIN JET
11 1399-3518 JET, MAIN FUEL (.082-WO-9/9A-1/2/3/4/6)
13 813470 FLOAT
18 1395-83181 INLET NEEDLE AND SEAT
20 1395-9117 THROTTLE SHAFT
21 814677 THROTTLE LEVER (WO-8A-5)
25 1395-9480 THROTTLE VALVE
27 27-886111 GASKET
30 1395-7831 JET, IDLE (.058-WO-9)
▶CARBURETOR HOSES AND FITTINGS (SERIAL #D000750 AND ABOVE) (19 parts) CARBURETOR HOSES AND FITTINGS (SERIAL #D000750 AND ABOVE)
Ref OEM Part # Part Name
1 86-45915 TERMINAL BLOCK
2 10-48409 SCREW
3 10-48408 SCREW
4 17498A1 THROTTLE CABLE BRACKET
5 39519 CUP
6 98889 LATCH
7 10-42975 DRIVE SCREW
8 10-81516040 SCREW
9 54-61001 J-CLAMP
10 22-59169003 TEE FITTING
11 22-130341 REDUCING TEE (.200 O.D.)
12 22-13033 TEE FITTING (.200 O.D.)
13 22-8M0181450 FITTING
14 22-996642 ELBOW
15 22-130351 FITTING
16 32-9912688 HOSE
17 32-1430165 HOSE
18 32-8M0108349 HOSE
19 56762 STA-STRAP
▶CARBURETOR PLATE AND REED BLOCK (SERIAL #D000749 AND BELOW) (37 parts) CARBURETOR PLATE AND REED BLOCK (SERIAL #D000749 AND BELOW)
Ref OEM Part # Part Name
1 1387-7785A61 CARBURETOR ASSEMBLY Comment: 250
2 1387-7785A62 CARBURETOR ASSEMBLY Comment: 250
3 1387-7785A63 CARBURETOR ASSEMBLY Comment: 250
4 1387-7785A64 CARBURETOR ASSEMBLY Comment: 250
5 1387-7785A65 CARBURETOR ASSEMBLY Comment: 250
6 1387-7785A66 CARBURETOR ASSEMBLY Comment: 250
7 88586 THROTTLE LINK
8 27-933531 GASKET
9 895981 THROTTLE LEVER
10 1395-6027 SCREW
11 54-816311T CLAMP
12 32-8M0108355 FUEL LINES
13 67748 ROLLER
14 17-67297 CLEVIS PIN
15 18-26953 COTTER PIN
16 12-89302 WASHER
17 88584 THROTTLE LEVER
18 10-22523 SCREW
19 13-26996 LOCKWASHER
20 12-24676 WASHER
21 88585 THROTTLE LEVER
22 882491 CARBURETOR PLATE (PORT)
23 882501 CARBURETOR PLATE (STARBOARD)
24 10-40011149 SCREW
25 10-30720 SCREW
26 16-815158 STUD
27 12-4002217 WASHER
28 11-401368 NUT
29 27-886252 GASKET (PORT)
30 27-886262 GASKET (STARBOARD)
31 884293 ADAPTOR
32 27-657443 GASKET
33 855952T3 REED BLOCK Comment: (INCLUDES REEDS/REED STOPS & SCREWS)
34 16-20500 STUD
35 11-35888 NUT
36 10-28635 SCREW
37 10-20540 SCREW
▶CARBURETOR PLATE AND REED BLOCK (SERIAL #D000750 AND ABOVE) (42 parts) CARBURETOR PLATE AND REED BLOCK (SERIAL #D000750 AND ABOVE)
Ref OEM Part # Part Name
- 27-88605A89 COMPONENT OF GASKET SET
1 882492 CARBURETOR PLATE (PORT)
2 27-886252 GASKET (PORT)
3 882502 CARBURETOR PLATE (STARBOARD)
4 27-886262 GASKET (STARBOARD)
5 16-20500 STUD
6 11-35888 NUT
7 884293 ADAPTOR
8 27-657443 GASKET
9 855952T3 REED BLOCK Comment: (INCLUDES REEDS/REED STOP & SCREWS)
10 10-20540 SCREW
11 10-30720 SCREW
12 10-28635 SCREW
13 10-40011149 SCREW
14 16-815158 STUD
15 12-4002217 WASHER
16 11-401368 NUT
17 27-933531 GASKET
18 88586 THROTTLE LINK
19 895981 THROTTLE LEVER
20 1395-6027 SCREW
21 67748 ROLLER
22 88585 THROTTLE LEVER
23 17-67297 CLEVIS PIN
24 18-26953 COTTER PIN
25 12-89302 WASHER
26 88584 THROTTLE LEVER
27 10-15124 SCREW
28 13-26996 LOCKWASHER
29 12-24676 WASHER
30 32-8M0108355 HOSE
31 22-16961 FITTING
32 22-817518 TEE
33 32-9912688 HOSE
34 42859A2 SOLENOID VALVE
35 54-633001 CLAMP
36 10-28635 SCREW
37 13-26992 LOCKWASHER
38 11-64015 NUT
39 32-8M0108349 HOSE
40 35-816296Q2 FUEL FILTER
41 54-816311T CLAMP
▶COWLS AND FRONT COVER (22 parts) COWLS AND FRONT COVER
Ref OEM Part # Part Name
1 2179-7606A8 COWL ASSEMBLY (PORT) (SILVER)
2 88354 SEAL
3 67258 PAD
4 91837 SOUND BLANKET
5 150882 COWL SEAL
6 88351 BRACKET-UPPER
7 88350 BRACKET-LOWER
8 10-4000355 SCREW
9 88477 SHIELD
10 10-48409 SCREW
11 16859A2 COWL LATCH
12 30413 HOOK
13 17-98026 RIVET
14 15417A1 BRACKET ASSEMBLY
15 2180-7607A4 COWL ASSEMBLY (STARBOARD) (SILVER)
16 88359 SEAL
17 92015 SOUND BLANKET
18 47341A11 STARTER ROPE (FOR MANUAL STARTING)
19 2181-7613A7 FRONT COVER ASSEMBLY (SILVER)
20 164581 SOUND BLANKET
21 61158T HOOK
22 10-75162 SCREW
▶CRANKSHAFT, PISTONS AND CONNECTING RODS (23 parts) CRANKSHAFT, PISTONS AND CONNECTING RODS
Ref OEM Part # Part Name
1 467-8784A1 CRANKSHAFT ASSEMBLY
2 30-88268T BALL BEARING (LOWER)
3 53-89531 RETAINING RING
4 89938 SEAL
5 89939 SEAT
6 882611 RING
7 31-88270T BEARING RACE
8 31-88269T ROLLER BEARING
9 796-816878A1 PISTON (PORT-CASTING #796-816878)
10 39-18282A12 PISTON RING SET
11 53-8320811 LOCK RING
12 631-8185A10 CONNECTING ROD ASSEMBLY
13 10-94320 SCREW
14 31-43012A2 ROLLER BEARING ASSEMBLY
15 12-88263 WASHER
16 29-8M0204715 NEEDLE BEARING
17 28-91800 KEY
18 31-816773A1 BEARING ASSEMBLY (WITH FITTING)
19 26-41953 OIL SEAL
20 43-410811 DRIVER GEAR
21 25-823683 O-RING
22 12-33001 WASHER
23 11-52901 NUT
▶CYLINDER BLOCK AND END CAPS (50 parts) CYLINDER BLOCK AND END CAPS
Ref OEM Part # Part Name
1 880-9550A33 CYLINDER BLOCK ASSEMBLY (275)
2 10-815549 SCREW (2")
3 21-428641 CHECK VALVE
4 21-42657A3 CHECK VALVE
5 16-815159 STUD
6 17-40120110 DOWEL PIN
7 17-8M0036405 DOWEL PIN (BEARING RACE )
8 27-53862 GASKET
9 16-14137 STUD (162 MM)
10 16-14136 STUD(110 MM)
11 16-910001 STUD (60 MM)
12 13-400248 LOCKWASHER
13 11-90517 NUT
14 10-81516290 SCREW (90 MM)
15 10-815162170 SCREW (170 MM)
16 10-815162105 SCREW (105 MM )
17 86-194373 TERMINAL BLOCK Comment: OLD DESIGN
18 56-8M0206596 SCREW Comment: OLD DESIGN
19 12-8M0204649 WASHER Comment: OLD DESIGN
20 54-814008 CLIP
21 12-4002319 WASHER (INSIDE)
22 13-400258 LOCKWASHER
23 11-40114 NUT
24 10-62568 SCREW
25 887821 BRACKET(FRONT)
26 10-40062127 SCREW
27 22-56759 FITTING (PRESS-IN)(OLD DESIGN)
28 10-81516235 SCREW (35 MM)
29 32-9912688 TUBING
30 54-22627 J-CLAMP
31 10-48408 SCREW
32 8M0084613 C-WASHER
33 21-426233 CHECK VALVE
34 54-816311T CLAMP
35 22-15133 FITTING (PRESS-IN)
36 96839 BRACKET
37 10-40010127 SCREW
38 13-26992 LOCKWASHER
39 10-78841 SCREW
40 12-8M0042642 WASHER
41 11-82670911 NUT
42 1166-8792A1 LOWR END CAP ASSEMBLY
43 26-54815 OIL SEAL
44 25-88955 O-RING
45 10-40011149 SCREW
46 32-9912688 HOSE (4-1/4")
47 11-813938 CAP NUT (OLD DESIGN)
48 22-15133 ELBOW
49 32-892024122 HOSE
50 21-149126 CHECK VALVE
▶DRIVE SHAFT HOUSING AND EXHAUST TUBE (29 parts) DRIVE SHAFT HOUSING AND EXHAUST TUBE
Ref OEM Part # Part Name
1 1594-9673A4 DRIVE SHAFT HOUSING (XX-LONG) (GRAY)
2 16-8M0034453 STUD (2-3/16")
3 16-57984 STUD (2-3/8")
4 10-54493 SCREW
5 12-45176 WASHER
6 11-8M0204653 NUT
7 88758T6 STRAP (GRAY)
8 10-67769 SCREW
9 11-25269 NUT
10 88238A10 GROUND WIRE ASSEMBLY
11 10-41508 SCREW
12 77327 MOUNT
13 25067 BUMPER
14 10-96853 SCREW
15 88238A10 GROUND WIRE ASSEMBLY
16 12-49339 WASHER
17 11-25096 NUT
18 54-8M0036782 CLAMP
19 10-82127335 SCREW
20 13-400247 LOCKWASHER
21 67077F1 COVER (GRAY)
22 10-88417 SCREW (5/8")
23 11-35521 NUT
24 17-20433 DOWEL PIN
25 888874 EXHAUST TUBE
26 88883 SEAL
27 25-89417 GROMMET
28 32-96128 WATER TUBE (XX-LONG)
29 26-89419 SEAL
▶DUAL ENGINE EXTENSION KIT (COUNTER ROTATION DESIGN I) (18 parts) DUAL ENGINE EXTENSION KIT (COUNTER ROTATION DESIGN I)
Ref OEM Part # Part Name
- 92876A9 DUAL ENGINE EXTENSION KIT
1 19624A1 SEAL KIT
2 71565A2 TUBE
3 41055 MOUNT
4 14-42100 TAB WASHER
5 11-8M0041651 JAM NUT
6 88404 TAB WASHER
7 10-38601 SCREW
8 17729A1 BRACKET
9 10-62055 SCREW
10 17728 TAB WASHER
11 10-849838 SCREW
12 11-8M0204726 NUT
13 97933A1 STEERING EYE
14 23-23651 SLEEVE
15 97931 TUBING
16 8M0026098 TUBE
17 11-42099 JAM NUT
▶DUAL ENGINE EXTENSION KIT (COUNTER ROTATION DESIGN II) (21 parts) DUAL ENGINE EXTENSION KIT (COUNTER ROTATION DESIGN II)
Ref OEM Part # Part Name
- 99073A2 OVERHAUL REPAIR KIT
1 25-48462 O-RING
2 71565A2 TUBE, CABLE GUIDE
3 41055 MOUNT
4 14-42100 TAB WASHER
5 11-8M0041651 JAM NUT
6 88404 TAB WASHER
7 10-38601 SCREW
8 17729A1 BRACKET
9 10-62055 SCREW
10 17728 TAB WASHER
11 10-849838 SCREW
12 11-8M0204726 NUT
13 8M0026167 STEERING EYE
14 23-23651 SLEEVE
15 97931 TUBING
16 8149514 COUPLER (18")
17 11-42099 JAM NUT
18 22-821169 COUPLING
19 12-34931 WASHER
20 10-94319 SCREW
▶ENRICHNER VALVE AND HOSES (SERIAL #D000749 AND BELOW) (27 parts) ENRICHNER VALVE AND HOSES (SERIAL #D000749 AND BELOW)
Ref OEM Part # Part Name
1 22-8M0181450 FITTING
2 32-1430165 HOSE
3 22-13033 TEE FITTING (.200 O.D.)
4 22-130341 TEE FITTING (.200 O.D.)
5 22-130342 TEE FITTING (.131 O.D.)
6 54-816311T CLAMP
7 32-9938779 HOSE (.077 I.D.)
8 32-8M0108355 HOSE
9 32-892024122 HOSE
10 22-59169003 FITTING
11 22-59169003 TEE FITTING
12 54-61001 J-CLAMP
13 17498A1 BRACKET
14 10-48408 SCREW
15 8M0084613 C-WASHER
16 54-22627 CLIP
17 10-81516040 SCREW
18 42859A2 ENRICHNER VALVE
19 54-633001 CLAMP
20 32-9912688 HOSE (.125 I.D.)
21 93573 BRACKET
22 10-28635 SCREW
23 13-26992 LOCKWASHER
24 11-20890 NUT
25 86-45915 TERMINAL BLOCK
26 10-48409 SCREW (7/16")
27 10-48408 SCREW
▶EXHAUST MANIFOLD AND CYLINDER HEAD (31 parts) EXHAUST MANIFOLD AND CYLINDER HEAD
Ref OEM Part # Part Name
1 88834 BRACKET
2 10-81516030 SCREW (30 MM)
3 16-69016 STUD (1.44")
4 12-8M0204663 WASHER (LARGE)
5 12-22887 WASHER (SMALL)
6 11-816874 WING NUT
7 941103 COVER (SEE DESIGN II DRAWING)
8 27-940601 GASKET
9 10-40011149 SCREW(25 MM)
10 22-38407 PIPE PLUG
11 90435 MOUNT
12 12-8M0204649 WASHER
13 11-35888 NUT
14 41020A3 CYLINDER HEAD
15 88251 SEAL
16 25-88923 O-RING
17 10-81516050 SCREW (50 MM)
18 54-47483 CLAMP
19 14586 THERMOSTAT (120)
20 27-8M0204714 GASKET
21 90390A1 COVER
22 10-74824 SCREW (1-1/4")
23 22-687271 FITTING
24 32-77653101 HOSE
25 22-91836 TEE
26 54-816311T CLAMP
27 32-77653101 HOSE (3")
28 32-8M0108355 HOSE, TELL TAIL (4")
29 22-76256 FITTING
30 12415 TEMPERATURE SENDER
31 22-68307 PIPE PLUG
▶EXHAUST PLATE (35 parts) EXHAUST PLATE
Ref OEM Part # Part Name
- 27-88605A89 COMPONENT OF GASKET SET
1 43769A3 EXHAUST PLATE (275)
2 25-64872 GROMMET
3 65848 CARRIER
4 86596 POPPET VALVE
5 24-90392 SPRING
6 27-88907003 GASKET
7 65664A1 RELIEF VALVE PLATE
8 648771 DIAPHRAGM
9 12-76451 WASHER
10 10-69570 SCREW
11 65663A2 COVER
12 10-4000354 SCREW
13 22-687271 ELBOW
14 17-43044 DOWEL PIN
15 10-81516265 SCREW (65 MM)
16 27-438771 GASKET (UPPER)
17 88355 SEAL
18 27-438782 GASKET (LOWER)
19 88880A1 PLATE
20 27-890842 GASKET
21 10-4000354 SCREW
22 13-400247 LOCKWASHER
23 968433 UPPER SHIFT SHAFT (XX-LONG)
24 23-65830 BUSHING
25 968413 LEVER
26 17-96888 ROLL PIN
27 96848 SHIFT LINK
28 23-26856 BUSHING
29 13-29720 WAVE WASHER
30 11-826709109 NUT
31 10-96849 SCREW
32 11-28770 NUT (5/16-24)
33 13-29720 WAVE WASHER
34 11-826709109 NUT (1/4-28)
▶FLYWHEEL/STATOR (23 parts) FLYWHEEL/STATOR
Ref OEM Part # Part Name
1 887832 FLYWHEEL COVER Comment: (STATOR ATTACHES WITH 4 SCREWS)
2 19-89219001 PLUG
3 79022 TIMING MARKER
4 10-37572 SCREW
5 12-72761 WASHER
6 19-45907 PLUG
7 267-9865A6 FLYWHEEL (BLACK-DESIGN II-SEE DRAWING)
8 10-32417 SCREW
9 10-89317 SCREW (SOCKET HEAD)
10 398-9610A22 STATOR ASSEMBLY Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
11 10-4008250 SCREW Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
12 13-400256 LOCKWASHER Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
13 18736A20 REGULATOR Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF. #13
14 18717 SEAL Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF. #13
15 10-86885 SCREW (1-5/8") Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF. #13
16 12-8M0204649 WASHER Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF. #13
17 8M0084173 REGULATOR Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
18 10-86885 SCREW (1-1/2") Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
19 12-8M0204649 WASHER Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
20 84-822446A1 HARNESS Comment: STATOR ATTACHES WITH 5 METRIC SCREWS & USE WITH REF . #17
21 89004A7 TRIGGER PLATE ASSEMBLY
22 54-63153 CLIP
23 10-62568 SCREW
▶FUEL PUMP (FUEL PUMP BODY IS BLACK) (20 parts) FUEL PUMP (FUEL PUMP BODY IS BLACK)
Ref OEM Part # Part Name
1 14360A78 FUEL PUMP ASSEMBLY
2 21-857005A1 DIAPHRAGM KIT
13 27-8M0204705 GASKET, BASE
14 144303 BASE
15 987752 PLATE
16 22-996642 FITTING
17 32-8M0108349 HOSE
18 22-19688 ELBOW
19 10-82130050 SCREW, FUEL PUMP TO CRANKCASE (M6 X 1)
20 10-82104540 SCREW, FUEL PUMP (M5 X .8 X 40)
21 54-816311T STA-STRAP
22 32-1350385 HOSE
23 22-19688 FITTING (90 DEGREES)
24 22-818993 TEE
25 32-82381335 HOSE
26 22-816856Q3 FUEL CONNECTOR
27 10-69067 SCREW
28 25-145091 GROMMET
29 22-8189941 CHECK VALVE
30 32-8M0108355 HOSE
▶FUEL PUMP (SERIAL #D000749 AND BELOW) (23 parts) FUEL PUMP (SERIAL #D000749 AND BELOW)
Ref OEM Part # Part Name
1 14360A78 FUEL PUMP ASSEMBLY
2 21-857005A1 DIAPHRAGM KIT
3 27-8M0204705 GASKET, BASE
14 144303 BASE
15 987752 PLATE
16 22-16288 FITTING
17 22-56800 PIPE PLUG
18 10-16452 SCREW
19 10-4000310 SCREW
20 12-4002314 WASHER
21 22-16961 TEE FITTING
22 32-8M0108355 FUEL LINE
23 32-8M0108349 TUBING
24 35-816296Q2 FUEL FILTER
25 54-816311T STA-STRAP
26 22-19688 FITTING
27 32-1350385 HOSE
28 22-424253 TEE
29 22-816856Q3 FUEL CONNECTOR
30 10-69067 SCREW
31 25-145091 GROMMET
32 21-857005A1 CONTENTS OF DIAPHRAGM KIT
33 27-88605A89 COMPONENT OF GASKET SET
▶FUEL PUMP(SERIAL #D000750 AND ABOVE)FUEL PUMP BODY WHITE/RED (20 parts) FUEL PUMP(SERIAL #D000750 AND ABOVE)FUEL PUMP BODY WHITE/RED
Ref OEM Part # Part Name
1 14360A78 FUEL PUMP ASSEMBLY
2 21-857005A1 DIAPHRAGM KIT
3 27-8M0204705 GASKET, BASE
12 144303 BASE
13 987752 PLATE
14 22-16288 FITTING
15 22-56800 PIPE PLUG
16 10-16452 SCREW
17 10-4000310 SCREW
18 12-4002314 WASHER
19 32-8M0108349 HOSE
20 32-8M0108355 HOSE
21 54-816311T STA-STRAP
22 32-1350385 HOSE
23 22-19688 FITTING (90 DEGREES)
24 22-424253 TEE
25 32-82381335 HOSE
26 22-816856Q3 FUEL CONNECTOR
27 10-69067 SCREW
28 25-145091 GROMMET
▶GEAR HOUSING (DRIVE SHAFT) (COUNTER ROTATION) (38 parts) GEAR HOUSING (DRIVE SHAFT) (COUNTER ROTATION)
Ref OEM Part # Part Name
- 1659-9554A19 GEAR HOUSING, COMPLETE (XX-LONG) (GRAY)
1 1659-9554A24 GEAR HOUSING (GRAY)
2 22-85822A6 CONNECTOR ASSEMBLY (XX-LONG)
3 22-56800 PLUG
4 31-88384T ROLLER BEARING
5 10-40122 SET SCREW
6 17-43044 DOWEL PIN
6A 814285 FILLER PLATE
7 22-8M0058389 DRAIN SCREW
8 12-191833 WASHER
9 10-79953Q04 GREASE FILLER SCREW
11 12-92721 WASHER
12 11-35921 NUT
13 45-814767A1 DRIVE SHAFT (XX-LONG)
14 15-88655A1 SHIM ASSEMBLY
15 31-8M0103473 ROLLER BEARING
16 11-88710 LOCKNUT
17 25-88657 O-RING
18 46-88776A5 WATER PUMP BASE ASSEMBLY
19 26-14381 OIL SEAL
20 27-907562 GASKET(LOWER)
21 90755 FACE PLATE
22 27-936662 GASKET (UPPER)
23 28-88422 KEY
24 47-85647 IMPELLER
25 46-90530A1 WATER PUMP BODY ASSEMBLY
26 26-88397 SEAL (X-LONG)
27 88581 GUIDE (X-LONG)
28 10-8M0204741 SCREW
29 90753 INSULATOR
30 44197A2 LOWER SHIFT SHAFT
32 53-29641 E-RING
33 25-25439 O-RING
34 23-77631A2 BUSHING ASSEMBLY
35 26-8M0204708 OIL SEAL
36 12-77674 RUBBER WASHER
37 31-66670A1 ROLLER BEARING
38 15-66672A1 SHIM ASSEMBLY
▶GEAR HOUSING (DRIVE SHAFT) (STANDARD ROTATION) (39 parts) GEAR HOUSING (DRIVE SHAFT) (STANDARD ROTATION)
Ref OEM Part # Part Name
- 1659-9554A11 GEAR HOUSING, COMPLETE (XX-LONG) (GRAY)
1 1659-9554A24 GEAR HOUSING (GRAY) Comment: CASTING #1659-9554C4
2 22-85822A6 CONNECTOR (XX-LONG)
3 22-56800 PLUG
4 31-88384T ROLLER BEARING
5 10-40122 SET SCREW
6 17-43044 DOWEL PIN
6A 814285 FILLER PLATE
7 10-37892 DRAIN SCREW (MAGNETIC)
8 12-191833 WASHER
9 10-79953Q04 SCREW
11 12-92721 WASHER
12 11-35921 NUT
13 45-814767A1 DRIVE SHAFT ASSEMBLY (XX-LONG)
14 15-88655A1 SHIM ASSEMBLY
15 31-8M0103473 ROLLER BEARING
16 11-88710 LOCK NUT
17 25-88657 O-RING
18 46-88776A5 WATER PUMP BASE ASSEMBLY
19 26-14381 OIL SEAL
20 27-907562 GASKET
21 90755 FACE PLATE
22 27-936662 GASKET
23 28-88422 KEY
24 47-85647 IMPELLER
25 46-90530A1 WATER PUMP BODY ASSEMBLY
26 26-88397 SEAL
27 88581 GUIDE
28 10-8M0204741 SCREW
29 90753 INSULTOR
30 44197A2 SHIFT SHAFT
31 53-78907 RETAINING RING (OLD DESIGN)
32 53-29641 E-RING
33 25-25439 O-RING 1
34 23-77631A2 BUSHING ASSEMBLY
35 26-8M0204708 OIL SEAL
36 12-77674 WASHER (OLD DESIGN)
37 31-66670A1 ROLLER BEARING
38 15-66672A1 SHIM ASSEMBLY
▶GEAR HOUSING (PROPELLER SHAFT) (COUNTER ROTATION) (42 parts) GEAR HOUSING (PROPELLER SHAFT) (COUNTER ROTATION)
Ref OEM Part # Part Name
- 27-88605A89 COMPONENT OF GASKET SET
1 1659-9554A24 GEAR HOUSING (GRAY)
39 789562 SHIFT CAM
40 803833T TRIM TAB
41 10-90042 SCREW
42 89594A1 CAM FOLLOWER
43 88523A1 CLUTCH ACTUATOR ROD
44 24-88579 SPRING
45 12-78910 WASHER
46 17-8M0084245 PIN
47 815362T1 BEARING ADAPTOR ASSEMBLY
48 31-814653T ROLLER BEARING
49 12-815481 THRUST WASHER
50 31-815480 THRUST BEARING
52 31-815482 ROLLER BEARING
53 17-78909 DETENT PIN
54 52-823580 RATCHET
55 17-8M0084243 CROSS PIN
56 24-78962 SPRING
57 43-812975A6 GEAR SET
58 23-1761526 SPACER SHIM .230"
59 31-15841 ROLLER BEARING
60 12-17616 THRUST RING
61 25-8M0214920 O-RING
62 814604T1 BEARING ADAPTOR
63 31-814653T ROLLER BEARING
64 12-18448 THRUST WASHER
65 31-15842 THRUST BEARING
66 44-812977 PROPELLER SHAFT
67 812976A1 BEARING CARRIER
68 31-30956T ROLLER BEARING
69 26-8M0204670 OIL SEAL
70 28-30281 KEY
71 14-79447 TAB WASHER
72 8M2011027 COVER
73 12-835467Q01 THRUST HUB
74 13-423511 LOCKWASHER
75 12-31211Q03 SPLINED WASHER
76 14-816629Q TAB WASHER
77 11-52707Q1 PROPELLER NUT
78 10-95705 SCREW
79 12-45176 WASHER
▶GEAR HOUSING (PROPELLER SHAFT) (STANDARD ROTATION) (35 parts) GEAR HOUSING (PROPELLER SHAFT) (STANDARD ROTATION)
Ref OEM Part # Part Name
- 1659-9554A11 GEAR HOUSING, COMPLETE (XX-LONG) (GRAY)
1 1659-9554A24 GEAR HOUSING-CASTING #1659-9554C4 (GRAY)
39 789562 SHIFT CAM
40 803833T TRIM TAB
41 10-90042 SCREW
42 89594A1 CAM FOLLOWER
43 88523A1 ROD (USE W/ G/H CASTING #1659-9554C4)
44 17-8M0084245 PIN
45 24-88579 SPRING (USE W/ G/H CASTING #1659-9554C4)
46 12-78910 WASHER
47 15-47397A1 SHIM
48 31-35928T1 TAPERED ROLLER BEARING ASSEMBLY
49 43-17064A5 GEAR SET (USE W/ G/H CASTING #1659-9554C4)
50 31-30895T ROLLER BEARING
51 52-823580 RATCHET
52 17-78909 DETENT PIN
53 17-8M0084243 CROSS PIN
54 24-78962 SPRING
55 44-93848 PROPELLER SHAFT
57 681001 THRUSTING RING
58 30-88957T BALL BEARING
59 25-8M0214920 O-RING
60 813082A1 CARRIER ( USE W/ CASTING #1659-9554C4)
61 31-30956T ROLLER BEARING
62 26-8M0204670 OIL SEAL
63 28-30281 KEY
64 14-79447 TAB WASHER
65 8M2011027 COVER
66 12-835467Q01 THRUST HUB
67 13-423511 LOCKWASHER
68 12-31211Q03 SPLINDEN WASHER
69 14-816629Q TAB WASHER
70 11-52707Q1 PROPELLER NUT
71 10-95705 SCREW
72 12-45176 WASHER
▶HYDRAULIC PUMP (22 parts) HYDRAULIC PUMP
Ref OEM Part # Part Name
- 99073A2 OVERHAUL REPAIR KIT
01 801786 ADAPTOR
02 803852 COUPLING
03 96598A1 MANUAL RELEASE
04 801787 PUMP (INCLUDES SCREWS)
05 35-89496 FILTER
06 25-89498 0-RING
07 25-89497 O-RING
08 89499 DIPSTICK
09 90587T RESERVOIR
10 10-90588 SCREW (INCLUDES O-RING)
11 17632T END CAP (W/BEARING)
12 10-17626 SCREW
13 25-17625 O-RING
14 10-17621 SCREW
15 17633 BRUSH
16 17631A1 BRUSH SET
17 17623 ARMATURE
18 12-17653 THRUST WASHER
19 17624 FIELD AND FRAME
20 17622 HOUSING (W/BEARING)
21 10-823444 SCREW
▶HYDRAULIC PUMP (DESIGN I) (20 parts) HYDRAULIC PUMP (DESIGN I)
Ref OEM Part # Part Name
- 99073A2 OVERHAUL REPAIR KIT
1 89492T ADAPTOR
2 803852 COUPLING
3 96598A1 MANUAL RELEASE (INCLUDES 3 0-RINGS)
4 89495 PUMP (INCLUDES SCREWS)
5 35-89496 FILTER
6 25-89498 O-RING
7 25-89497 O-RING
8 89499 DIPSTICK
9 90587T RESERVOIR
10 10-90588 SCREW (INCLUDES O-RING)
11 16-90590 THRU STUD (LONG)
12 89484 END FRAME, DRIVE END
13 89485 ARMATURE
14 12-89482 THRUST WASHER
15 89486 FIELD AND FRAME
16 89487 BRUSH CARD
17 89488 END FRAME, COMMUTATOR END
18 10-89489 THRU BOLT 4-9/16")
19 11-89481 NUT
▶HYDRAULIC PUMP AND MOUNTING BRACKETS (53 parts) HYDRAULIC PUMP AND MOUNTING BRACKETS
Ref OEM Part # Part Name
- 84-65017A14 TILT HARNESS
1 823653A9 HYDRAULIC PUMP (DESIGN I)
1A 823653A9 HYDRAULIC PUMP (DESIGN II)
2 818567 BRACKET (DESIGN II)
3 10-38837 SCREW (1-1/8") (DESIGN II)
4 12-56720 WASHER (DESIGN I)
4A 12-57792 WASHER (DESIGN II)
5 11-8267096 NUT (DESIGN I)
5A 23-34948 SPACER (DESIGN II)
6 84-86322A24 CABLE (DESIGN II)
7 10-92051 SCREW (3/4") (DESIGN II)
8 84-79138A9 BATTERY CABLE (BLACK - NEGATIVE)
9 54-8M0024808 J-CLIP
10 84-79147A3 HARNESS ASSEMBLY
11 88-8M0207796 FUSE
12 84-95084A3 CABLE ASSEMBLY
13 8M0185622 STARTER SOLENOID
14 88075 RETAINER
15 10-41508 SCREW (3/8")
16 8-32,11-26419 NUT
17 94275 CONNECTOR
18 13-26992 LOCKWASHER (1/4")
19 11-94330 NUT (1/4-20)
20 88-79023T10 FUSE (110 AMP)
21 12-96457 WASHER
22 11-21825 NUT
23 84-86322A15 WIRE (BLACK)
24 84-79139A12 BATTERY CABLE (RED-POSITIVE)
25 87762 BRACKET
26 10-31830 BOLT (3-1/2")
27 13-58643 LOCKWASHER
28 11-46335 NUT
29 87760T PLATE
30 10-39349 SCREW (3/4")
31 13-8M0204647 LOCKWASHER
32 10-90271 SCREW (5/8")
33 13-58643 LOCKWASHER
34 85-861680 BOOT
35 10-48409 SCREW
36 32-96994 HYDRAULIC HOSE (STARBOARD)
37 32-89023 HYDRAULIC HOSE (STARBOARD)
38 25-12602002 GROMMET
39 22-87207 CONNECTOR
40 87871T COVER
41 27-87775 GASKET
42 25-45507 GROMMET
43 10-36070 SCREW
44 13-26996 LOCKWASHER
45 11-68219 NUT
46 79146 RETAINER
47 54-816311T STA-STRAP
48 86-45915 TERMINAL BLOCK
49 10-69079 SCREW
▶INSTRUMENTATION (43 parts) INSTRUMENTATION
Ref OEM Part # Part Name
1 79-895283Q43 TACHOMETER
2 79101T BRACKET
3 88-72729 LIGHT BULB
4 88-79888 SOCKET
5 8-32,11-26419 NUT
6 84-86323A5 WIRE (PURPLE - 1/2")
7 79-895292Q41 TRIM GAUGE
8 79480 BRACKET
9 88-72729 LIGHT BULB
10 88-79888 SOCKET
11 11-26419 NUT (8-32)
12 54-816311T STA-STRAP
13 79-895287Q41 TEMPERATURE GAUGE
14 88-72729 LIGHT BULB
15 88-79888 SOCKET
16 12-26427 WASHER
17 79480 BRACKET
18 11-26419 NUT
19 84-88824A4 WIRE (TAN/BLUE -23')
20 87-19674A1 SWITCH ASSEMBLY
21 10-18303 SCREW
22 813679 ADAPTOR
23 15920Q54 LANYARD
24 10-32866 SCREW
25 18321 CLAMP
26 12-24676 WASHER
27 11-68219 NUT
28 79146 RETAINER
29 22-36492 BUSHING
30 79-895288Q41 15 PSI GAUGE KIT
31 84-86322A16 CABLE ASSEMBLY (BLACK - 2")
32 22-286241 FITTING
33 22-63668 ADAPTOR
34 22-63651 ELBOW (90 DEGREES)
35 22-63670 FITTING
36 54-816311T CABLE TIE
37 22-77863 FITTING
38 32-64088A09 TUBING
39 88-95691 BULB
40 13631 SOCKET
41 17654 BRACKET
42 812497A2 DIODE KIT
43 84-11149A2 CABLE ASSEMBLY (6")
▶KEY SWITCH ASSEMBLY (14 parts) KEY SWITCH ASSEMBLY
Ref OEM Part # Part Name
- 8949112 KEY 2F
1 84-816626A20 KEY SWITCH ASSEMBLY (20')
2 90468A1 COVER
3 76424 BRACKET
4 16-55422 STUD
5 12-24676 WASHER
6 11-68219 NUT
7 816479A3 PLATE
8 87-88107A5 SWITCH (SEE CHART BELOW FOR KEY)
9 11-879755 NUT
10 38-90311 INSERT
11 84-8M0210763 ALARM (NEW DESIGN)
12 68879 COVER- OLD DESIGN
13 23-812711 SPACER (1/4")
▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts) MISCELLANEOUS PARTS/ACCESSORIES
Ref OEM Part # Part Name
- 90-19388940 OWNER'S GUIDE (GRAY)
▶OIL INJECTION COMPONENTS (39 parts) OIL INJECTION COMPONENTS
Ref OEM Part # Part Name
1 14460 OIL PUMP
2 10-73013 SCREW (1-1/2")
3 1938516 LINK
4 14525A3 ADAPTOR ASSEMBLY
5 43-41083 DRIVEN GEAR
6 25-11379 O-RING
7 54-816311T CLAMP
8 32-82381335 TUBING
9 15136 OIL RESERVOIR
10 10-63328 SCREW
11 13-53166 LOCKWASHER
12 12-36042 WASHER
13 12-67264 WASHER
14 23-67268 SPACER
15 23-14680 SPACER
16 25-48462 O-RING
17 36-43300A5 CAP ASSEMBLY
18 27-43307T GASKET
19 8M0187298 FLOAT ASSEMBLY
20 11-99265 PUSHNUT
21 32-8M0108355 TUBING
22 54-415823 CLAMP
23 32-8M0108355 TUBING
24 22-42425 FITTING
25 32-9912878 HOSE
26 32-8M0108355 HOSE
27 1257-87421 OIL TANK
28 36-43298A2 CAP ASSEMBLY
29 25-11332 O-RING
30 816190A4 ADAPTOR HOUSING ASSEMBLY - NEW DESIGN
31 25-11332 O-RING- NEW DESIGN
32 32-99802 TUBE- NEW DESIGN
33 12540A4 HOUSING ASSEMBLY Comment: QUICK DISCONNECT- OLD DESIGN
34 32-99439 HOSE- NEW DESIGN
35 12540A3 HOUSING- OLD DESIGN
36 12242A1 LATCH- OLD DESIGN
37 21-8781051 FITTING (CRANKCASE)
38 14-814811 WASHER
39 10-73657 BOLT
▶SOUND ATTENUATOR AND COWL BRACKET (36 parts) SOUND ATTENUATOR AND COWL BRACKET
Ref OEM Part # Part Name
1 883644 BRACKET
2 85650 HOUSING (STARBOARD)
3 10-34941 SCREW
4 12-8M0204649 WASHER
5 88361T6 BRACKET (GRAY)
6 14900A1 SEAL
7 88356 SEAL
8 10-4000335 SCREW
9 12-8M0204649 WASHER
10 13944A1 SOUND ATTENUATOR PLATE/COVER ASSEMBLY
11 27-898192 GASKET
12 139441 COVER
13 90435 MOUNT
14 12-8M0204649 WASHER
15 11-35888 NUT
16 67245T BRACKET
17 25-67272 GROMMET
18 54-26550 CLIP
19 8M0084613 C-WASHER
20 10-78291 SCREW
21 10-40062127 SCREW
22 12-8M0214930 WASHER
23 41124T6 BRACKET (GRAY)
24 88357 SEAL
25 99391 RETAINER
26 88622 PLATE
27 25-67272 GROMMET
28 88621 RETAINER
29 10-34994 SCREW
30 76264 COWL LATCH
31 24-85367 SPRING
32 67241 HOUSING
33 10-92051 SCREW
34 90435 MOUNT
35 12-8M0204649 WASHER
36 11-35888 NUT
▶STARTER MOTOR AND IGNITION COILS (15 parts) STARTER MOTOR AND IGNITION COILS
Ref OEM Part # Part Name
1 50-893893 STARTER MOTOR
2 23-8M0034918 COLLAR
3 8M0043376 STOP
4 10-69035 SCREW
5 84-93388A1 WIRE (BLACK)
6 13-8M0204647 LOCKWASHER
7 11-8M0204668 NUT
8 339-832757A4 IGNITION COIL ASSEMBLY
9 11-45076 NUT
10 67614 COVER
11 10-88856 SCREW
12 84-60466A7 GROUND STRAP (BLACK)
13 84-813715A11 HIGH TENSION CABLE
14 85-63709A1 PROTECTOR
15 33-13686Q SPARK PLUG
▶STARTER MOTOR ASSEMBLY (9 parts) STARTER MOTOR ASSEMBLY
Ref OEM Part # Part Name
- 50-893893 STARTER MOTOR ASSEMBLY
1 90645 DRIVE KIT
2 13310T1 DRIVE
3 75660 PLATE
4 10-74968 THRU BOLT
7 79216 ARMATURE
8 898265016 BRUSH SET
9 898265014 HOLDER, BRUSH
11 15386001 END CAP, COMMUTATOR
▶SWIVEL BRACKET AND STEERING ARM (44 parts) SWIVEL BRACKET AND STEERING ARM
Ref OEM Part # Part Name
1 1491-9225A4 SWIVEL BRACKET ASSEMBLY (GRAY)
2 26-87735 OIL SEAL (LOWER)
3 23-818764 BUSHING
4 22-8M0169589 GREASE FITTING
5 23-67668 SPACER
6 17-63779 DOWEL PIN
7 25-88341 GROMMET
8 26-85023 OIL SEAL
9 12-87161 WASHER
10 25-48171 O-RING
11 85028A3 TILT LOCK LEVER (STARBOARD) (GRAY)
12 23-86600 BUSHING
13 24-85367 SPRING
14 41052 PLUNGER
15 16-88876 STUD
16 86603T6 KNOB (GRAY)
17 864751 COUPLING
18 17-69745 ROLL PIN
19 24-88049 SPRING
20 18-93861 COTTER PIN
21 13-78854 WAVE WASHER
22 96852F2 BOTTOM YOKE (GRAY)
23 53-67684 RETAINING RING
24 12-67670 THRUST WASHER
25 17-840792A1 SWIVEL PIN/STEERING ARM (GRAY) Comment: 1/2-20 SCREW THREAD SIZE
26 10-8154521 SCREW Comment: 1/2-20 SCREW THREAD SIZE
27 773261 MOUNT Comment: 1/2-20 SCREW THREAD SIZE
28 12-66921 WASHER Comment: 1/2-20 SCREW THREAD SIZE
29 12-78688 WASHER Comment: 1/2-20 SCREW THREAD SIZE
30 11-35000 NUT Comment: 1/2-20 SCREW THREAD SIZE
31 8M0000516 BUMPER Comment: 1/2-20 SCREW THREAD SIZE
32 92876A12 STEERING LINK ASSEMBLY
33 10-849838 SCREW
34 11-33826 NUT
35 12-34931 WASHER
36 86485A6 TILT SWITCH ASSEMBLY
37 84-65017A14 HARNESS (2FEMALE/2 MALE)
38 88342 STRAP
39 10-87926 SCREW
40 54-54457 CLAMP
41 10-64014 SCREW
42 12-8M0204649 WASHER
43 10-81516290 SCREW
44 150311 CLAMP
▶THROTTLE LEVER (31 parts) THROTTLE LEVER
Ref OEM Part # Part Name
1 74897T PIVOT
2 62459T BALL JOINT
3 11-45076 NUT
4 76035 LINK ROD
5 11-46438 NUT
6 89811 SPARK ADVANCE LEVER
7 10-75168 SCREW
8 11-29598 NUT
9 52023 CAP
10 10-12405 SCREW (1-1/4")
11 11-68219 NUT
12 48039 CAP
13 94818 THROTTLE CONTROL LEVER
14 10-818165 SCREW (1-3/4")
15 23-55164 BUSHING
16 23-55171 BUSHING
17 24-55162 SPRING
18 12-68410 WASHER
19 10-75168 SCREW
20 11-29598 NUT
21 52023 CAP
22 39483 LATCH
23 10-69026 SCREW
24 12-69057 WASHER
25 24-20099 SPRING
26 11-826709109 NUT
27 93259 THROTTLE CONTROL ROD
28 8M0221994 BARREL
29 8130011 THROTTLE CAM
30 23-26856 BUSHING
31 10-41122 BALL SCREW
▶TRANSOM BRACKETS (30 parts) TRANSOM BRACKETS
Ref OEM Part # Part Name
1 1494-7476T6 TRANSOM BRACKET (PORT) (GRAY)
2 1495-7478T6 TRANSOM BRACKET (STARBOARD) (GRAY)
3 10-677552 SCREW(6-1/2")
4 10-814259 SCREW(4")
5 12-8M0204648 WASHER
6 11-91962 NUT
7 10-87180 BOLY
8 11-82671317 NUT
9 99170A2 TILT TUBE
10 13-88750 WAVE WASHER
11 11-859133 NUT(1"-14)(GRAY)
12 25-45711 O-RING
13 85026T6 PLATE(GRAY)
14 10-28636 SCREW
15 12-8M0204649 WASHER
16 85035T6 SPACER(GRAY)
17 10-70732 SCREW
18 12-8M0204649 WASHER
19 89949A1 PLATE ASEMBLY
20 10-90192 SCREW
21 54-75275 CLAMP, WIRING HARNESS
22 10-88829 SCREW
24 79610A18 TRIM CYLINDER (79879A1 REPAIR KIT) (GRAY)
25 23-86489 BUSHING
26 12-85022 WASHER
27 24-30316 SPRING
28 17-85020T PIVOT PIN
29 85024 SHAFT
30 23-86637 BEARING
31 17-91862 PIN
▶WIRING HARNESS, STARTER SOLENOID AND RECTIFIER (45 parts) WIRING HARNESS, STARTER SOLENOID AND RECTIFIER
Ref OEM Part # Part Name
1 918822 IGNITION PLATE
2 10-82127335 SCREW
3 13-53166 LOCKWASHER
4 84-65999A2 GROUND WIRE (BLACK)
5 54-47483 CLAMP (1/2")
6 12-36042 WASHER
7 12-67264 WASHER (RUBBER)
8 23-67268 BUSHING
9 87-33386A3 MERCURY SWITCH
10 10-38055 SCREW (5/8")
11 11-45076 NUT
12 17-36242 ROLL PIN
13 86-66986 TERMINAL BLOCK
14 10-22523 SCREW
15 10-37572 SCREW
16 84-92432A6 ENGINE HARNESS
17 88-8M0207796 FUSE
18 134731 FUSE HOLDER (OLD DESIGN)
19 78799 TEMPERATURE SENDER
20 53-13899 SNAP RING
21 88751 CLAMP
22 10-28636 SCREW
23 12-20533 WASHER
24 84-88807A38 CABLE (24")
25 14857A16 OIL WARNING MODULE
26 10-4010630 SCREW
27 12-8M0214930 WASHER
28 84-88439A2 BATTERY CABLE, NEGATIVE
29 89-853654A1 STARTER SOLENOID
30 11-45076 NUT (10-32)
31 13-39107 LOCKWASHER (5/16")
32 84-93389A2 WIRE (YELLOW)
33 11-8M0204668 NUT (5/16-18)
34 10-20540 SCREW (5/8")
35 13-26992 LOCKWASHER
36 86926A11 SPEED LIMITER ASSEMBLY
37 10-40019108 SCREW
38 83-42551A1 DIODE ASSEMBLY
39 332-7778A12 SWITCH BOX
40 10-90818 SCREW
41 23-91912 BUSHING
42 11-45076 NUT
43 10-69079 SCREW
44 84-92486A2 HARNESS, COIL TO SWITCH BOX (#1,3 AND 5)
45 5790811 SLEEVE

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 250/275 running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.

  1. Replace water pump impeller and inspect wear plate
  2. Change engine oil and oil filter (check drain plug washer)
  3. Replace spark plugs and check ignition timing
  4. Drain and refill lower unit gear oil; inspect for water contamination
  5. Inspect fuel lines, primer bulb, and fuel filter for deterioration
  6. Check and replace sacrificial anodes (zinc or aluminum)
  7. Inspect propeller for damage; check shaft seal and cotter pin
  8. Check valve clearance (refer to service manual for specifications)
  9. Lubricate all grease points (steering, tilt tube, shift linkage)
  10. Inspect control cables and throttle/shift linkage for smooth operation
  • Pro Tip: Always flush the engine with fresh water after saltwater use — even a quick 10-minute flush significantly extends component life.
  • Pro Tip: Use fuel stabilizer in the tank before winter storage, and fog the cylinders to prevent internal corrosion during extended periods of non-use.

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