Mercury 3.5 (4-STROKE) Carb JCI (0R568285 & Up) Parts & Diagrams

OEM and aftermarket replacement parts for Mercury 3.5 (4-STROKE) Carb JCI. Scroll down for exploded parts diagrams (30), specifications, and maintenance reference.

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Water Pump Impeller – Fits Tohatsu/Nissan 2.5 - 6 HP (Replaces 369 - 65021 - 1) - JLM Marine Boat Parts Limited
47-16154-3 Outboard Rubber Impeller with Key/Pin for Mercury Mariner 4-S 2 2.5 3.5 | JLM Marine
$21.00
$21.00
files/Water_Pump_Impeller_for_Tohatsu_Nissan_25-6_HP_18-3098_-_JLM_MARINE-8288311.jpgDefault Title
$21.00
17-95372 18-95295 12-8035161 26-95348 25-16131 27-95220 Prop Shaft Seal Kit with Shear Pin for Mercury Mariner 2.5HP 3.3HP | JLM Marine
17-95372 18-95295 12-8035161 26-95348 25-16131 27-95220 Prop Shaft Seal Kit with Shear Pin for Mercury Mariner 2.5HP 3.3HP | JLM Marine
$20.50
$20.50
files/12_f0dab45b-421b-4acb-8162-3f3be09b8964.jpgDefault Title
$20.50
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
8M0181314 Maintenance Kit for Mercury 2.5HP 3.5HP | JLM Marine
8M0181314 Maintenance Kit for Mercury 2.5HP 3.5HP | JLM Marine
$68.50
$68.50
files/kit-23KM770-4N_1864322c-d076-4f1b-a0d5-1e6b8275d85a.pngDefault Title
$68.50

Mercury 3.5 (4-STROKE) Carb JCI (0R568285 & Up) Parts & Diagrams

🔎 Mercury 3.5 (4-STROKE) Carb JCI Reference Library — Exploded parts diagrams (30 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 3.5 (4-STROKE) Carb JCI is a 4-Stroke, 1-Cylinder outboard motor. Designed for dinghies, inflatable boats, and small tenders where lightweight portability is essential.

Quick Reference Specifications

Specification Value
Engine Type 4-Stroke, 1-Cylinder
Horsepower 3 HP
Displacement 85 cc
Bore x Stroke 55 mm x 36 mm
Spark Plug (Type & Gap) NGK BPR6HS-10
Engine Oil Capacity 0.45 L
Recommended Engine Oil Quicksilver 4-Stroke Engine Oil
Gear Case Oil Capacity 180 mL (6.1 fl oz)
Idle Speed (in gear) 1100 RPM (in gear)
Full Throttle RPM Range 5000-6000
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 3.5 (4-STROKE) Carb JCI:

  • 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 3.5 (4-STROKE) Carb JCI.

▶Camshaft and Valves, Serial # 0R318095 and Below (17 parts) Camshaft and Valves, Serial # 0R318095 and Below
Ref OEM Part # Part Name
- 898103T72 SHORT BLOCK
1 402-898103T56 CAMSHAFT ASSEMBLY
2 898103T57 VALVE, Intake
3 850839T01 VALVE, Exhaust
4 26-822647001 SEAL, Intake - Black
5 26-822647002 SEAL, Exhaust - Green
6 8M0158660 SEAT
7 24-898101214 SPRING
8 822650001 RETAINER
9 28-803556 KEEPER, Valve
10 898101301 LIFTER
11 803547 PUSH ROD
12 898101302 PLATE, Push Rod
13 10-8035097 BOLT
14 898101303 ROCKER ARM
15 803550 PIVOT
16 11-803551 NUT
▶Camshaft and Valves, Serial # 0R318096 and Up (17 parts) Camshaft and Valves, Serial # 0R318096 and Up
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK Comment: EPA Models Only SN# 0R448033 & Up
1 402-834956T07 CAMSHAFT ASSEMBLY
2 898103T57 VALVE, Intake
3 850839T01 VALVE, Exhaust
4 26-822647001 SEAL, Intake - Black
5 26-822647002 SEAL, Exhaust - Green
6 8M0158660 SEAT
7 24-898101214 SPRING, Valve
8 822650001 RETAINER
9 28-803556 KEEPER, Valve
10 898101301 LIFTER
11 803547 PUSH ROD
12 898101302 PLATE, Push Rod
13 10-8035097 BOLT
14 898101303 ROCKER ARM
15 803550 PIVOT
16 11-803551001 NUT
▶Carburetor, All Models-Serial # 0R318095 and Below (37 parts) Carburetor, All Models-Serial # 0R318095 and Below
Ref OEM Part # Part Name
- 27-898103A67 GASKET SET, Powerhead
1 3303-853720T23 CARBURETOR Comment: 2 Horsepower-Complete Only
2 10-898101407 SCREW, Stop
3 24-803554 SPRING
4 35,803524004 JET, Pilot Comment: 3.5 Horsepower
5 10-898101800 SET SCREW, Pilot Comment: 3.5 Horsepower
6 10-898101802 SET SCREW, Pilot Comment: 3.5 Horsepower EU SN# 0R221250 & Below
7 898101287 MAIN NOZZLE Comment: 2.5 Horsepower
8 62,898101364 JET, Main Comment: 2.5 Horsepower
9 162543 FLOAT VALVE, Brass
10 54-803525 CLIP, Stainless Steel
11 898101288 FLOAT
12 17-162562 PIN, Float - Stainless Steel
13 16258T5 FLOAT BOWL
14 27-8035084 GASKET, Rubber
15 10-8035093 SCREW, Drain (M5 x 6)
16 25-8035131 O-RING, Rubber
17 10-16260 SCREW, (M4 x 12)
18 32-898101365 HOSE, Rubber (230 mm)
19 879147T98 MANIFOLD, Intake
20 10-16830A1 SCREW KIT
21 27-898101291 GASKET, Intake Manifold
22 27-803508013 GASKET, Carburetor
23 27-80350810 GASKET, Insulator
24 10-16832 BOLT, (M6 x 16)
25 803528 BRACKET
26 898101293 CABLE, Choke Link
27 23-804371001 COLLAR
28 803526T SILENCER, Air
29 11-400212 NUT
30 23-952868 COLLAR
31 803527 FLAME TRAP
32 12-16826 WASHER, Stainless Steel
33 10-898103229 SCREW
34 10-879194248 BOLT
35 12-161404 WASHER
36 8M0155131 ROD, Choke
▶Carburetor, All Models-Serial # 0R318096 Thru 0R448032 (37 parts) Carburetor, All Models-Serial # 0R318096 Thru 0R448032
Ref OEM Part # Part Name
- 27-898103A67 GASKET SET, Powerhead
1 3303-853720T25 CARBURETOR Comment: 3.5 Horsepower
2 10-898101407 SCREW, Stop
3 24-803554 SPRING
4 NSS NOT SOLD SEPARATE Comment: 2.5 Horsepower
5 10-898101289 SET SCREW, Pilot
6 19-8M0060417 PLUG, Rubber
7 8126506 MAIN NOZZLE Comment: 3.5 Horsepower
8 68,16250011 JET, Main Comment: 3.5 Horsepower
9 162543 FLOAT VALVE, Brass
10 54-803525 CLIP, Stainless Steel
11 898103245 FLOAT
12 17-162562 PIN, Float - Stainless Steel
13 898103240 FLOAT BOWL
14 27-8035084 GASKET, Rubber
15 10-8035093 SCREW, Drain (M5 x 6)
16 25-8035131 O-RING, Rubber
17 10-16260 SCREW, (M4 x 12)
18 32-898101365 HOSE, Rubber (230 mm)
19 879147T98 MANIFOLD, Intake
20 10-16830A1 SCREW KIT
21 27-898101291 GASKET, Intake Manifold
22 27-803508013 GASKET
23 27-80350810 GASKET, Insulator
24 10-16832 BOLT, (M6 x 16)
25 803528 BRACKET
26 898101293 CABLE, Choke Link
27 23-804371001 COLLAR
28 803526T SILENCER, Air
29 11-400212 NUT
30 23-952868 COLLAR
31 803527 FLAME TRAP
32 12-16826 WASHER
33 10-898103229 SCREW
34 10-879194248 BOLT
35 12-161404 WASHER
36 8M0155131 ROD, Choke
▶Carburetor, EPA Models-Serial # 0R448033 and Up (41 parts) Carburetor, EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
- 27-898103A67 GASKET SET, Powerhead
1 3303-853720T25 CARBURETOR Comment: 3.5 Horsepower
2 10-898101407 SCREW, Stop
3 24-803554 SPRING
4 NSS NOT SOLD SEPARATE Comment: 2.5 Horsepower
5 10-898101289 SET SCREW, Pilot
6 19-8M0060417 PLUG, Rubber
7 8126506 MAIN NOZZLE Comment: 3.5 Horsepower
8 68,16250011 JET, Main Comment: 3.5 Horsepower
9 162543 FLOAT VALVE, Brass
10 54-803525 CLIP, Stainless Steel
11 898103245 FLOAT
12 17-162562 PIN, Float - Stainless Steel
13 898103240 FLOAT BOWL
14 27-8035084 GASKET, Rubber
15 10-8035093 SCREW, Drain (M5 x 6)
16 25-8035131 O-RING, Rubber
17 10-16260 SCREW, (M4 x 12)
18 32-898101365 HOSE, Rubber (230 mm)
19 8M0072287 MANIFOLD
20 22-8M0071347 FITTING
21 27-898101291 GASKET, Intake Manifold
22 27-803508013 GASKET
23 27-80350810 GASKET, Insulator
24 10-16832 BOLT, (M6 x 16)
25 803528 BRACKET
26 898101293 CABLE, Choke Link
27 23-804371001 COLLAR
28 803526T SILENCER, Air
29 11-400212 NUT
30 23-952868 COLLAR
31 803527 FLAME TRAP
32 12-16826 WASHER
33 10-898103229 SCREW
34 10-879194248 BOLT
35 12-161404 WASHER
36 8M0155131 ROD, Choke
37 10-16830A1 SCREW KIT
38 32-8M0072282 HOSE
39 32-895108001 PROTECTIVE SLEEVE
40 54-952245 CLAMP
▶Carburetor, Non-EPA Models-Serial # 0R448033 and Up (37 parts) Carburetor, Non-EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
- 27-898103A67 GASKET SET, Powerhead
1 3303-853720T25 CARBURETOR Comment: 3.5 Horsepower
2 10-898101407 SCREW, Stop
3 24-803554 SPRING
4 NSS NOT SOLD SEPARATE Comment: 2.5 Horsepower
5 10-898101289 SET SCREW, Pilot
6 19-8M0060417 PLUG, Rubber
7 8126506 MAIN NOZZLE Comment: 3.5 Horsepower
8 68,16250011 JET, Main Comment: 3.5 Horsepower
9 162543 FLOAT VALVE, Brass
10 54-803525 CLIP, Stainless Steel
11 898103245 FLOAT
12 17-162562 PIN, Float - Stainless Steel
13 898103240 FLOAT BOWL
14 27-8035084 GASKET, Rubber
15 10-8035093 SCREW, Drain (M5 x 6)
16 25-8035131 O-RING, Rubber
17 10-16260 SCREW, (M4 x 12)
18 32-898101365 HOSE, Rubber (230 mm)
19 879147T98 MANIFOLD, Intake
20 10-16830A1 SCREW KIT
21 27-898101291 GASKET, Intake Manifold
22 27-803508013 GASKET
23 27-80350810 GASKET, Insulator
24 10-16832 BOLT, (M6 x 16)
25 803528 BRACKET
26 898101293 CABLE, Choke Link
27 23-804371001 COLLAR
28 803526T SILENCER, Air
29 11-400212 NUT
30 23-952868 COLLAR
31 803527 FLAME TRAP
32 12-16826 WASHER
33 10-898103229 SCREW
34 10-879194248 BOLT
35 12-161404 WASHER
36 8M0155131 ROD, Choke
▶Clamp Bracket (31 parts) Clamp Bracket
Ref OEM Part # Part Name
1 3406-889246T84 CLAMP BRACKET Comment: SN# 0R190772 & Up
2 10-898103A66 CLAMP SCREW ASSEMBLY
3 12-95379 PAD
4 10-898101337 SCREW
5 11-95374 NUT, Nylon
6 12-95375 WASHER
7 8M0055576 DISTANCE ROD
8 11-400212 NUT
9 12-16826 WASHER, Stainless Steel
10 898101341 THRUST SUPPORTER
11 898101626 DAMPER
12 8150921 THRUST ROD
13 815096 KNOB
14 8M0058363 TILT STOPPER Comment: SN# 0R190772 & Up
15 25-161781 O-RING Comment: SN# 0R190772 & Up
16 3406-889246T63 CAP, Swivel Bracket
17 898101633 STOPPER
18 898101342 PLATE
19 17-17033 PIN
20 24-898101347 SPRING
21 10-879194305 BOLT, Stainless Steel
22 12-16826 WASHER, Stainless Steel
23 23-8M0057473 BUSHING
24 803582 THRUST PLATE
25 10-898103226 SCREW
26 23-95381001 BUSHING
27 10-162061 SCREW, Adjusting
28 952791 FRICTION PAD
29 24-953838 SPRING
30 12-16826 WASHER, Stainless Steel
31 3406-889246T62 SWIVEL BRACKET
▶Cowling (23 parts) Cowling
Ref OEM Part # Part Name
- 37-896851014 DECAL, Start Procedure Comment: SN# 0R550755 & Below
1 100-8M0058617 TOP COWL ASSEMBLY, Silver, no decals Comment: SN# 0R399906 & Up
2 26-8M0072631 SEAL Comment: SN# 0R399906 & Up
3 898103T79 HANDLE, Tilt Mariner
4 12-16826 WASHER, Stainless Steel
5 13-400256 LOCKWASHER, (M6)
6 11-400212 NUT
7 100-8M0224582 BOTTOM COWL
8 NSS NOT SOLD SEPARATE, Decal-Spark Plug
9 8M0063135 COWL LATCH ASSEMBLY Comment: SN# 0R399906 & Up
10 23-952868 COLLAR
11 10-8248324 SCREW, (M6 x 16)
12 10-16832 BOLT, (M6 x 16)
13 12-953921 WASHER
14 23-9528611 COLLAR
15 8M0089675 DECAL, Fuel Lever Comment: SN# 0R550755 & Below
16 37-896851013 DECAL, Oil Lever
17 37-896851012 DECAL, Shift (N-R)
18 898101373 BUSHING
19 50-16230 SAFETY ROPE
20 37-8M0163794 DECAL, Notice This Side Up Comment: SN# 0R550755 & Below
21 91-803581 TOOL KIT
22 16841Q02 FLUSHING ATTACHMENT
▶Crankshaft, Piston and Connecting Rod (14 parts) Crankshaft, Piston and Connecting Rod
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK Comment: EPA Models Only SN# 0R448033 & Up
1 400-8M0172725 CRANKSHAFT ASSEMBLY
2 30-16049 BEARING, Ball
3 898101283 THRUST PLATE
4 26-898101285 SEAL, Oil
5 28-95229 KEY
6 600-8M0145825 CONNECTING ROD ASSEMBLY
7 10-898101284 BOLT
8 41-825713002 PIN, Piston Comment: SN# 0R184083 & Up
9 53-16057 CLIP
10 713-898103A46 PISTON ASSEMBLY
11 39-803678T05 RING SET, Piston
12 NSS NOT SOLD SEPARATE, Piston Ring - Second
13 NSS NOT SOLD SEPARATE, Oil Ring-Piston
▶Cylinder Block, All Models-Serial # 0R318095 and Below (26 parts) Cylinder Block, All Models-Serial # 0R318095 and Below
Ref OEM Part # Part Name
- 898103T72 SHORT BLOCK Comment: SN# 0R318095 & Below
1 803-898103T42 CYLINDER BLOCK
2 17-16119 PIN, Dowel
3 10-850879001 BOLT
4 10-898101363 BOLT
5 12-16826 WASHER, Stainless Steel
6 37-8M0137390 DECAL, Recommended Oil
7 898103T43 COVER, Cylinder Head
8 27-898101323 GASKET, Cylinder Head Cover
9 10-166954 BOLT
10 12-953921 WASHER
11 8M0228409 THERMOSTAT
12 898101278 CAP, Thermostat
13 27-898101279 GASKET, Thermostat Cap
14 54-803563005 CLAMP
15 10-879194264 BOLT
16 33-8M0204682 SPARK PLUG, NGK#DCPR6E
17 898101296 SLINGER
18 898101314 BRACKET, Throttle Cable
19 54-803563005 CLAMP
20 10-823042 BOLT, Stainless Steel
21 32-898101282 HOSE, Breather
22 54-952245 CLAMP
23 898103T44 COVER, Breather Chamber
24 27-898101280 GASKET, Breather Chamber Cover
25 10-8248324 SCREW, (M6 x 16)
▶Cylinder Block, All Models-Serial # 0R318096 Thru 0R448032 (26 parts) Cylinder Block, All Models-Serial # 0R318096 Thru 0R448032
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK Comment: SN# 0R318096 & Up
1 803-815013T12 CYLINDER BLOCK ASSEMBLY
2 17-16119 PIN, Dowel
3 10-850879001 BOLT
4 10-898101363 BOLT
5 12-16826 WASHER
6 37-8M0137390 DECAL, Recommended Oil
7 898103T43 COVER, Cylinder Head
8 27-898101323 GASKET, Cylinder Head Cover
9 10-166954 BOLT
10 12-953921 WASHER, Stainless Steel
11 8M0228409 THERMOSTAT
12 898101278 CAP, Thermostat
13 27-898101279 GASKET, Thermostat Cap
14 54-803563005 CLAMP
15 10-879194264 BOLT
16 33-8M0204682 SPARK PLUG, NGK#DCPR6E
17 898101296 SLINGER
18 898101314 BRACKET, Throttle Cable
19 54-803563005 CLAMP
20 10-823042 BOLT
21 32-898101282 HOSE, Breather
22 54-952245 CLAMP
23 898103T44 COVER, Breather Chamber
24 27-898101280 GASKET, Breather Chamber Cover
25 10-8248324 SCREW, (M6 x 16)
▶Cylinder Block, EPA Models-Serial # 0R448033 and Up (32 parts) Cylinder Block, EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK Comment: SN# 0R448033 & Up
1 803-815013T12 CYLINDER BLOCK ASSEMBLY
2 17-16119 PIN, Dowel
3 10-850879001 BOLT
4 10-898101363 BOLT
5 12-16826 WASHER
6 37-8M0137390 DECAL, Recommended Oil
7 898103T43 COVER, Cylinder Head
8 27-898101323 GASKET, Cylinder Head Cover
9 10-166954 BOLT
10 12-953921 WASHER, Stainless Steel
11 8M0228409 THERMOSTAT
12 8M0072278 CAP
13 27-898101279 GASKET, Thermostat Cap
14 54-803563005 CLAMP
15 10-879194264 BOLT
16 33-8M0204682 SPARK PLUG, NGK#DCPR6E
17 898101296 SLINGER
18 898101314 BRACKET, Throttle Cable
19 54-803563005 CLAMP
20 10-823042 BOLT
21 32-898101282 HOSE, Breather
22 54-952245 CLAMP
23 898103T44 COVER, Breather Chamber
24 27-898101280 GASKET, Breather Chamber Cover
25 10-8248324 SCREW, (M6 x 16)
26 8M0188385 FUEL PUMP
27 10-898101953 BOLT
28 54-95395 CLIP, Stainless Steel
29 32-8M0072281 HOSE, Low Permeation, Fuel Shut Off to Pump
30 32-8M0072280 HOSE, Low Permeation, Pump to Carburetor
31 54-8M0129429 CLIP
▶Cylinder Block, Non-EPA Models-Serial # 0R448033 and Up (26 parts) Cylinder Block, Non-EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK Comment: SN# 0R318096 & Up
1 803-815013T12 CYLINDER BLOCK ASSEMBLY
2 17-16119 PIN, Dowel
3 10-850879001 BOLT
4 10-898101363 BOLT
5 12-16826 WASHER
6 37-8M0137390 DECAL, Recommended Oil
7 898103T43 COVER, Cylinder Head
8 27-898101323 GASKET, Cylinder Head Cover
9 10-166954 BOLT
10 12-953921 WASHER, Stainless Steel
11 8M0228409 THERMOSTAT
12 898101278 CAP, Thermostat
13 27-898101279 GASKET, Thermostat Cap
14 54-803563005 CLAMP
15 10-879194264 BOLT
16 33-8M0204682 SPARK PLUG, NGK#DCPR6E
17 898101296 SLINGER
18 898101314 BRACKET, Throttle Cable
19 54-803563005 CLAMP
20 10-823042 BOLT
21 32-898101282 HOSE, Breather
22 54-952245 CLAMP
23 898103T44 COVER, Breather Chamber
24 27-898101280 GASKET, Breather Chamber Cover
25 10-8248324 SCREW, (M6 x 16)
▶Driveshaft Housing (21 parts) Driveshaft Housing
Ref OEM Part # Part Name
- 27-8M0082881 GASKET SET, Lower Unit
1 1600-8M0173448 HOUSING, Driveshaft - Short
2 19-803593 PLUG Comment: SN# 0R350682 & Below
3 17-16119 PIN, Dowel
4 27-898101328 GASKET, Driveshaft Housing
5 10-879194264 BOLT
6 19-879194296 FLUSH PLUG
7 27-95220 GASKET
8 898103T65 BRACKET, Steering
9 10-879194274 BOLT
10 32-898101355 HOSE, Rubber (50 mm)
11 25-16117 GROMMET
12 16-8230441 STUD
13 898101367 STOPPER
14 10-8230427 BOLT
15 25-881305002 GROMMET
16 898103T63 HOUSING, Extension
17 23-898101329 BUSHING
18 10-8M0123421 BOLT
19 11-400212 NUT
20 17-898101330 PIN, Dowel
▶Flywheel Cup, Serial # 0R318095 and Below (11 parts) Flywheel Cup, Serial # 0R318095 and Below
Ref OEM Part # Part Name
1 898101304 CUP, Flywheel
2 898103T59 COVER, Flywheel
3 23-898101305 COLLAR
4 11-95233 NUT
5 12-898101307 WASHER
6 898103T58 IGNITER
7 85-803560001 BOOT
8 10-167051 BOLT, (M6 x 20)
9 10-8230427 BOLT, (M6 x 12)
10 87-823037A04 SWITCH, Stop
11 823054 LANYARD
▶Flywheel Cup, Serial # 0R318096 and Up (11 parts) Flywheel Cup, Serial # 0R318096 and Up
Ref OEM Part # Part Name
1 812644T01 FLYWHEEL
2 898103T59 COVER, Flywheel
3 23-898101305 COLLAR
4 11-95233 NUT
5 12-898101307 WASHER
6 803559T08 IGNITER, With Cap
7 85-803560001 BOOT
8 10-167051 BOLT, (M6 x 20)
9 87-823037A06 SWITCH ASSEMBLY, Stop - Lanyard
10 823054 LANYARD
11 10-898103117 BOLT
▶Fuel Tank, All Models-Serial # 0R318095 and Below (21 parts) Fuel Tank, All Models-Serial # 0R318095 and Below
Ref OEM Part # Part Name
1 1265-8M0055353 TANK ASSEMBLY, Fuel
2 898103197 COVER
3 23-853826003 SPACER
4 12-953921 WASHER
5 10-8M0204707 BOLT
6 26-8M0055355 SEAL
7 37-898101372 DECAL, Caution
8 36-8M0058610 CAP ASSEMBLY, Fuel
9 27-878353 GASKET
10 851845 HOOK
11 32-898101352 HOSE, Fuel
12 54-8M0129429 CLIP
13 22-16240 FUEL COCK ASSEMBLY
14 32-16242001 TUBE
15 898101350 ROD, Fuel Cock
16 16244 RUBBER
17 16243 KNOB
18 54-803525002 CLIP
19 32-898101351 HOSE, Fuel
20 32-895108005 TUBE, Spiral
21 54-803563005 CLAMP
▶Fuel Tank, All Models-Serial # 0R318096 Thru 0R448032 (18 parts) Fuel Tank, All Models-Serial # 0R318096 Thru 0R448032
Ref OEM Part # Part Name
1 1265-8M0055353 TANK ASSEMBLY, Fuel
2 898103197 COVER
3 23-853826003 SPACER
4 12-953921 WASHER, Stainless Steel
5 10-8M0204707 BOLT
6 26-8M0055355 SEAL
7 37-898101372 DECAL, Caution
8 36-8M0058610 CAP ASSEMBLY, Fuel
9 27-878353 GASKET
10 851845 HOOK
11 32-898103221 HOSE, Fuel
12 54-8M0129429 CLIP
13 22-16240 FUEL COCK ASSEMBLY
14 16244 RUBBER
15 25-161811 O-RING
16 898103220 KNOB, Fuel Cock
17 54-803525002 CLIP
18 32-898103222 HOSE, Fuel
▶Fuel Tank, EPA Models-Serial # 0R448033 and Up (19 parts) Fuel Tank, EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
1 1265-8M0076577 TANK ASSEMBLY, Fuel Comment: SN# OR475061 & Up
2 898103197 COVER
3 23-853826003 SPACER
4 12-953921 WASHER, Stainless Steel
5 10-8M0204707 BOLT
6 26-8M0055355 SEAL
7 37-898101372 DECAL, Caution
8 1200-8M0072276 CAP ASSEMBLY
9 27-878353 GASKET
10 851845 HOOK
11 32-8M0072281 HOSE, Low Permeation, To Fuel Pump
12 54-8M0129429 CLIP
13 22-16240 FUEL COCK ASSEMBLY
14 16244 RUBBER
15 25-161811 O-RING
16 898103220 KNOB, Fuel Cock
17 54-803525002 CLIP
18 32-898103222 HOSE, Fuel
19 54-95395 CLIP, Stainless Steel
▶Fuel Tank, Non-EPA Models-Serial # 0R448033 and Up (18 parts) Fuel Tank, Non-EPA Models-Serial # 0R448033 and Up
Ref OEM Part # Part Name
1 1265-8M0055353 TANK ASSEMBLY, Fuel
2 898103197 COVER
3 23-853826003 SPACER
4 12-953921 WASHER, Stainless Steel
5 10-8M0204707 BOLT
6 26-8M0055355 SEAL
7 37-898101372 DECAL, Caution
8 36-8M0058610 CAP ASSEMBLY, Fuel
9 27-878353 GASKET
10 851845 HOOK
11 32-898103221 HOSE, Fuel
12 54-8M0129429 CLIP
13 22-16240 FUEL COCK ASSEMBLY
14 16244 RUBBER
15 25-161811 O-RING
16 898103220 KNOB, Fuel Cock
17 54-803525002 CLIP
18 32-898103222 HOSE, Fuel
▶Gear Housing Assembly, Driveshaft (29 parts) Gear Housing Assembly, Driveshaft
Ref OEM Part # Part Name
- 889246A16 REPAIR KIT, Water Impeller
1 1600-8M0116852 GEAR HOUSING ASSEMBLY, Basic
2 30-95342 BEARING, Ball
3 22-8M0229353 PLUG
4 27-95220 GASKET
5 97-823913Q ANODE
6 10-16832 BOLT, (M6 x 16)
7 43-16138 GEAR
8 23-8104711 SPACER
9 45-8M0227907 DRIVESHAFT, Long
10 30-95342 BEARING, Ball
11 28-16155 KEY
12 16161A01 HOUSING ASSEMBLY, Lower Water Pump
13 26-161621 SEAL, Oil
14 27-898101333 GASKET, Water Pump Housing - Lower
15 17-9521811 PIN, Roll - Stainless Steel
16 27-161603 GASKET
17 898101371 PLATE, Water Pump Guide
18 27-898101331 GASKET, Water Pump Housing - Upper
19 47-8M0204676 IMPELLER
20 16156A01 HOUSING ASSEMBLY, Upper Water Pump
21 161571 LINER
22 10-8M0063198 BOLT
23 13-400256 LOCKWASHER, (M6)
24 12-16826 WASHER, Stainless Steel
25 25-953611 GROMMET
26 32-898101335 TUBE, Water - Long
27 25-898101336 GROMMET
28 10-8M0123421 BOLT
▶Gear Housing Assembly, Propeller Shaft (18 parts) Gear Housing Assembly, Propeller Shaft
Ref OEM Part # Part Name
- 27-8M0082881 GASKET SET, Lower Unit
1 1600-8M0116852 GEAR HOUSING ASSEMBLY, Basic
2 30-16128 BEARING, Ball
3 15-813277 SHIM, (0.15)
4 43-812944 GEAR
5 823050 PUSH ROD
6 24-176671 SPRING
7 52-823049 CLUTCH
8 44-952911 PROPELLER SHAFT
9 898103T81 CARRIER ASSEMBLY, Bearing
10 825116 HOUSING
11 30-95344 BEARING, Ball
12 26-95348 SEAL, Oil
13 25-16131 O-RING
14 10-167051 BOLT, (M6 x 20)
15 17-815111Q02 SHEAR PIN Comment: Saltwater Application
16 48-815083A01 PROPELLER, (3 x 7.4 x 5.7)(Plastic)
17 18-95295 COTTER PIN
▶Oil Pan, Serial # 0R318095 and Below (21 parts) Oil Pan, Serial # 0R318095 and Below
Ref OEM Part # Part Name
- 898103T72 SHORT BLOCK
1 898103T54 PAN, Oil
2 898101294 DIPSTICK
3 17-16119 PIN, Dowel
4 10-803509021 BOLT
5 12-8035161 WASHER
6 10-850879001 BOLT
7 26-898101285 SEAL, Oil
8 25-825057003 O-RING
9 26-898101298 SEAL, Oil
10 898103T55 HEAD, Crankcase
11 10-167051 BOLT, (M6 x 20)
12 27-898101297 GASKET, Oil Pan
13 36-8M0135589 CAP ASSEMBLY, Oil Filler
14 25-803513007 O-RING
15 10-167051 BOLT, (M6 x 20)
16 32-898101281 HOSE, (90 mm) Rubber
17 54-95395 CLIP, Stainless Steel
18 898101299 BRACKET, Starter
19 898101300 DAMPER, Rubber
20 23-952868 COLLAR
▶Oil Pan, Serial # 0R318096 and Up (20 parts) Oil Pan, Serial # 0R318096 and Up
Ref OEM Part # Part Name
- 8M0147025 SHORT BLOCK
1 898103T54 PAN, Oil
2 898101294 DIPSTICK
3 17-16119 PIN, Dowel
4 10-803509021 BOLT
5 12-8035161 WASHER
6 10-850879001 BOLT
7 26-898101285 SEAL, Oil
8 25-825057003 O-RING
9 26-898101298 SEAL, Oil
10 898103T55 HEAD, Crankcase
11 10-167051 BOLT, (M6 x 20)
12 27-898101297 GASKET, Oil Pan
13 36-8M0135589 CAP ASSEMBLY, Oil Filler
14 25-803513007 O-RING
15 10-167051 BOLT, (M6 x 20)
16 32-898101281 HOSE, (90 mm) Rubber
17 54-95395 CLIP, Stainless Steel
18 898103219 BRACKET
19 23-952868 COLLAR
▶Powerhead Gasket Set Components (1 parts) Powerhead Gasket Set Components
Ref OEM Part # Part Name
- 27-898101328 GASKET, Driveshaft Housing
▶Recoil Starter (17 parts) Recoil Starter
Ref OEM Part # Part Name
- 37-898103193 DECAL, Interferance
1 898103T61 STARTER ASSEMBLY, Recoil
2 24-898101316 SPRING
3 898101317 REEL
4 898101318 RATCHET
5 24-898101319 SPRING, Return
6 898101320 PLATE, Friction
7 10-898101321 SCREW
8 24-898101322 SPRING, Friction
9 50-8M0110703 ROPE
10 898101324 HANDLE, Starter
11 898101325 ANCHOR, Rope
12 898101366 PLATE, Rope Anchor
13 8M0138706 SEAL, Starter
14 10-898101327 SCREW
15 12-953921 WASHER
16 54-803563005 CLAMP
▶Service/Support Material (1 parts) Service/Support Material
Ref OEM Part # Part Name
- NSS NOT SOLD SEPARATE, DECAL, EPA (2009 & Up) Comment: (Contact Mercury Marine Warranty Administration for Replacement-Service Bulletin 2009-18)
▶Shift Linkage (19 parts) Shift Linkage
Ref OEM Part # Part Name
- 27-8M0082881 GASKET SET, Lower Unit
1 898101343 LEVER, Shift
2 24-813028 SPRING
3 30-812937 STOPPER
4 12-895168 WASHER
5 25-168231 O-RING
6 898101345 LEVER, Shift Rod
7 10-898101354 SCREW
8 898101344 SHIFT ROD
9 12-16826 WASHER, Stainless Steel
10 18-8150261 COTTER PIN
11 16190 JOINT
12 10-8248324 SCREW, (M6 x 16)
13 25-161771 O-RING, Component of Complete Gear Housing
14 23-161761 BUSHING
15 25-161781 O-RING, Component of Complete Gear Housing
16 161741 CAM ROD, Component of Long Extension Kit Comment: Long
17 161721 CLUTCH CAM, Component of Complete Gear Housing
18 17-161791 PIN, Component of Complete Gear Housing - Component of Long Extension Kit
▶Tiller Handle (26 parts) Tiller Handle
Ref OEM Part # Part Name
- 8M0123135 TILLER HANDLE KIT
1 803996T07 TILLER HANDLE
2 853775003 GRIP
3 803569 SHAFT, Rubber
4 23-898101309 BUSHING
5 10-898101310 SCREW
6 16338 BRACKET
7 10-879194329 SCREW
8 898101311 FRICTION PIECE
9 8M0051383 NUT
10 24-8M0051384 SPRING, Stainless Steel
11 10-8M0204707 BOLT
12 898101313 SHAFT, Throttle
13 37-824200005 DECAL, Throttle
14 23-16083002 BUSHING
15 898101308 COVER
16 10-16832 BOLT, (M6 x 16)
17 898101312 CABLE, Throttle
18 23-8797051 SLEEVE
19 803571 DRUM, Throttle
20 803572 OPENER, Throttle
21 23-803573 COLLAR
22 10-16201 BOLT
23 12-953921 WASHER
24 898101315 ROD, Throttle
25 23-16083004 BUSHING
▶Tools (1 parts) Tools
Ref OEM Part # Part Name
- 91-37241 PULLER PLATE

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 3.5 (4-STROKE) Carb JCI 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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