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Mercury 3.6 (7145388 & Up) Parts & Diagrams
🔎 Mercury 3.6 Reference Library — Exploded parts diagrams (10 diagrams), specifications, common issues, and maintenance checklist.
The Mercury 3.6 is a 3 HP 4-stroke outboard motor. Designed for dinghies, inflatable boats, and small tenders where lightweight portability is essential.
Quick Reference Specifications
| Specification | Value |
|---|---|
| Engine Type | 4-Stroke |
| Horsepower | 3 HP |
| Displacement | — |
| Bore x Stroke | — |
| Spark Plug (Type & Gap) | — |
| Engine Oil Capacity | — |
| Recommended Engine Oil | SAE 10W-30 4-Stroke Marine Oil |
| Gear Case Oil Capacity | — |
| Idle Speed (in gear) | — |
| Full Throttle RPM Range | — |
| 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 3.6:
- 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 3.6.
▶CARBURETOR ASSEMBLY (27 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1385-7568 | CARBURETOR |
| 2 | 1393-7759 | VALVE, Throttle |
| 3 | 1393-7772 | JET NEEDLE |
| 4 | 1393-7770 | E RING, NEEDLE JET |
| 5 | 1393-7774 | RETAINER |
| 6 | 1393-7760 | ROD |
| 7 | 1393-7758 | SPRING, ROD |
| 8 | 1393-7757 | GASKET, COVER |
| 9 | 1393-7756 | COVER, MIXING CHAMBER |
| 10 | 1393-7767 | GASKET, INLET NEEDLE |
| 11 | 1393-7768 | NEEDLE AND SEAT, Inlet |
| 12 | 1393-7769 | PIN, FLOAT |
| 13 | 1393-7762 | FLOAT |
| 14 | 1393-7766 | PILOT JET |
| 15 | 1393-7771 | NEEDLE JET |
| 16 | 1393-7773 | MAIN JET |
| 17 | 1393-7763 | GASKET, FLOAT BOWL |
| 19 | 1393-7765 | SCREW, FLOAT BOWL |
| 20 | 1393-6158 | SPRING, ADJUSTING SCREW |
| 21 | 1393-7750 | SCREW, ADJUSTING-LOW SPEED |
| 22 | 1393-7761 | SCREW, ADJUSTING-IDLE SPEED |
| 23 | 1393-7751 | PLUNGER |
| 24 | 1393-7752 | SPRING, PLUNGER |
| 25 | 1393-7753 | CAP, PLUNGER |
| 26 | 1393-7754 | CLIP, PLUNGER CAP |
| 27 | 1393-7755 | CAP |
| 28 | 1393-7764 | LEVER |
▶CLAMP AND SWIVEL BRACKET ASSEMBLY (26 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 1479-7291A1 | CLAMP BRACKET (PORT) |
| 2 | 1478-7289A1 | CLAMP BRACKET (STARBOARD) |
| 3 | 10-77190A4 | THUMB SCREW ASSEMBLY |
| 4 | 78971 | HANDLE, THUMB SCREW |
| 5 | 17-78970 | PIN, Groove, THUMB SCREW |
| 6 | 12-73719 | WASHER, THUMB SCREW |
| 6A | 10-768042 | SCREW, THUMB SCREW WASHER |
| 7 | 10-96917 | SCREW, CLAMP BRACKET |
| 8 | 12-68920 | WASHER, CLAMP BRACKET SCREW |
| 10 | 11-8M0204726 | NUT, (.375-24), CLAMP BRACKET STUD OR SCREW |
| 11 | 16-68925 | STUD, CLAMP BRACKET |
| 12 | 13-26992 | LOCKWASHER, (.250) Stainless Steel, CLAMP BRACKET STUD |
| 13 | 11-29598 | NUT, (.250-28) Stainless Steel, CLAMP BRACKET STUD |
| 14 | 17-68929A2 | PIN ASSEMBLY, Tilt |
| 15 | 24-62143 | SPRING, TILT PIN |
| 16 | 1477-7400A2 | SWIVEL BRACKET ASSEMBLY |
| 17 | 10-69067 | SCREW, (.250-20 x 1.375), SWIVEL BRACKET |
| 17A | 22-8M0169589 | FITTING, SWIVEL BRACKET |
| 18 | 76110A1 | LEVER ASSEMBLY, Tilt |
| 19 | 24-68932 | SPRING, TORSION-PORT |
| 20 | 68968 | ROD, REVERSE LOCK |
| 22 | 68972 | LEVER, REVERSE LOCK |
| 23 | 24-73124 | SPRING, TORSION-STARBOARD |
| 24 | 22-8M0169589 | FITTING |
| 25 | 79793A1 | SCREW ASSEBMLY, Adjustment |
| 26 | 25-20385 | O-RING, (.239 x .070), ADJUSTMENT SCREW |
▶CRANKSHAFT, PISTON AND CONNECTING ROD ASSEMBLY (13 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 27-98540A83 | GASKET SET |
| 1 | 427-7334A2 | CRANKSHAFT ASSEMBLY |
| 2 | 79952A1 | CARRIER ASSEMBLY |
| 3 | 12-79960 | WASHER, CARRIER |
| 4 | 608-7395A2 | CONNECTING ROD ASSEMBLY |
| 5 | 10-87374 | SCREW, (.250-28 x 1.030), CONNECTING ROD |
| 6 | 29-26815 | BEARING, Needle, CRANKPIN |
| 7 | 11-20061 | NUT, CONNECTING ROD SCREW |
| 8 | 12-65967 | WASHER, NEEDLE BEARING RETAINING |
| 9 | 29-31505 | BEARING, Needle, PISTON PIN |
| 10 | 719-7391T3 | PISTON ASSEMBLY |
| 11 | 40-21666 | LOCK RING, PISTON PIN |
| 12 | 39-21665A12 | RING SET, Piston |
▶CYLINDER BLOCK AND CRANKCASE ASSEMBLY (37 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 88675A83 | POWERHEAD ASSEMBLY |
| 1 | 843-8694A3 | CYLINDER BLOCK ASSEMBLY Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 2 | 16-66021 | STUD, CARBURETOR |
| 3 | 17-8M0084726 | PIN, Dowel (.187 x .530), CRANKCASE TO CYLINDER BLOCK |
| 4 | 22-89275 | FITTING, BLEED DRAIN |
| 5 | 32-9912688 | HOSE, BLEED DRAIN (8") |
| 6 | 22-887801 | ELBOW, Tell-Tale Tubing, BLEED DRAIN |
| 7 | 22-390721 | SCREW, CYLINDER BLOCK |
| 8 | 10-73280 | SCREW, CRANKCASE TO CYLINDER BLOCK (1 1/2") |
| 9 | 10-76621 | SCREW, CRANKCASE TO CYLINDER BLOCK (1") |
| 10 | 70726 | REED BLOCK |
| 11 | 34-35836 | REED, INLET VALVE |
| 12 | 34-22215 | RETAINER, REED |
| 13 | 10-28430 | SCREW, (#6-32 x .25), REED AND RETAINER TO BLOCK |
| 14 | 27-357391 | GASKET, REED BLOCK TO CRANKCASE |
| 15 | 30-72961 | BEARING, Ball, CRANKCASE (LOWER) |
| 16 | 23-89794 | SPACER, LOWER BALL BEARING |
| 17 | 26-56397 | SEAL, Oil, CRANKCASE (LOWER) |
| 18 | 15-31412A1 | SHIM |
| 19 | 1132-7536A2 | HOUSING ASSEMBLY, Bearing |
| 20 | 30-72961 | BEARING, Ball, BEARING HOUSING |
| 21 | 31-31410 | BEARING, Roller, BEARING HOUSING |
| 22 | 26-66301 | SEAL, Oil, BEARING HOUSING |
| 23 | 25-20863 | O-RING, BEARING HOUSING |
| 24 | 10-39002 | SCREW, BEARING HOUSING (1/2") |
| 25 | 88222 | TAB, GROUND-BEARING HOUSING SCREW |
| 26 | 35658 | COVER, TRANSFER COVER |
| 27 | 27-35657 | GASKET, TRANSFER PORT COVER |
| 28 | 10-20720 | SCREW, (.190-24 x .62) |
| 29 | 1029-7527 | COVER, CYLINDER BLOCK |
| 30 | 27-416151 | GASKET, COVER TO CYLINDER BLOCK |
| 31 | 10-8M0214943 | SCREW, (.250-20 x 1.00) |
| 32 | 27-416141 | GASKET, CYLINDER BLOCK TO BAFFLE PLATE |
| 33 | 46234 | PLATE, BAFFLE-EXHAUST MANIFOLD |
| 34 | 27-416141 | GASKET |
| 35 | 46171 | COVER, EXHAUST MANIFOLD |
| 36 | 10-49668 | SCREW, (.250-20 x .750) |
▶DRIVESHAFT HOUSING ASSEMBLY (29 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 27-98540A83 | GASKET SET |
| 1 | 1580-8526A1 | HOUSING ASSEMBLY, Driveshaft Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 2 | 16-75321 | STUD, DRIVE SHAFT HOUSING Comment: (LONG SHAFT) |
| 3 | 10-79953Q04 | SCREW, (.375-16 x .250), GREASE FILLER |
| 4 | 12-191833 | WASHER, GREASE FILLER SCREW |
| 5 | 32-88997 | TUBE, Water Comment: (LONG SHAFT) |
| 6 | 26-36556 | SEAL, (.500 Inch Outside Diameter), WATER TUBE |
| 7 | 23-13127 | BEARING, Water Tube Seal |
| 8 | 54-79791 | CLAMP, CO-PILOT |
| 9 | 88669 | MOUNT, RUBBER-DRIVESHAFT HOUSING |
| 10 | 23-74308 | BUSHING, RUBBER MOUNT |
| 11 | 98168A1 | BRACKET ASSEMBLY, STEERING ARM Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 12 | 10-75840 | SCREW, (#10-24 x .880), STEERING ARM BRACKET |
| 13 | 19-88184 | PLUG, DRIVESHAFT HOUSING Comment: SN# US-5571989 & Below |
| 14 | 10-69067 | SCREW, (.250-20 x 1.375), DRIVESHAFT HOUSING TO POWERHEAD |
| 15 | 98319 | PLATE, ADAPTOR |
| 16 | 27-41631 | GASKET, PLATE TO DRIVESHAFT HOUSING Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 17 | 27-41632 | GASKET, PLATE TO POWERHEAD Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 18 | 87664 | HANDLE, CARRYING |
| 19 | 10-54615 | SCREW, (.250-20 x .625), HANDLE TO ADAPTOR PLATE |
| 20 | 12-21249 | WASHER, HANDLE SCREW |
| 21 | 87667T | HANDLE, STEERING |
| 22 | 87668 | GRIP, STEERING HANDLE |
| 23 | 10-31984 | SCREW, STEERING HANDLE TO BRACKET (1 1/2") |
| 24 | 13-53166 | LOCKWASHER, (.312), STEERING HANDLE SCREW |
| 25 | 12-56720 | WASHER, (.330 x .750 x .060) Stainless Steel, STEERING HANDLE SCREW |
| 26 | 12-26825 | WASHER, (.328 x .750 x .06), STEERING HANDLE SCREW |
| 27 | 11-8M0204668 | NUT, (.312-18), STEERING HANDLE SCREW |
| 28 | 11-82670911 | NUT, (.312-24) Stainless Steel, GEAR HOUSING STUD |
▶GEAR HOUSING ASSEMBLY(DRIVESHAFT) (31 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 27-98540A83 | GASKET SET |
| 1 | 1648-7811A9 | GEAR HOUSING ASSEMBLY, BASIC Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 2 | 16-75321 | STUD, GEAR HOUSING (7 1/4") Comment: (LONG SHAFT) |
| 3 | 16-68928 | STUD, WATER PUMP (2 1/8") |
| 4 | 16-70741 | STUD, WATER PUMP (1 1/8") |
| 5 | 23-77428 | BEARING, GEAR HOUSING |
| 6 | 23-90770 | BUSHING, FLANGED-GEAR HOUSING Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 7 | 43-90796 | GEAR, Pinion Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 8 | 15-21148A1 | SHIM SET (.002-3-5-10) Comment: SN# US-5571989 & Below |
| 9 | 11-20922 | NUT, PINION GEAR |
| 10 | 45-87663 | DRIVESHAFT Comment: (LONG SHAFT) |
| 11 | 28-8M0032835 | KEY, IMPELLER DRIVE |
| 12 | 27-68939 | GASKET, WATER PUMP-LOWER |
| 13 | 46-90844A1 | HOUSING ASSEMBLY, Water Pump |
| 14 | 26-897153 | SEAL, Oil, WATER PUMP |
| 15 | 70977T | INSERT, WATER PUMP |
| 16 | 47-89980 | IMPELLER |
| 17 | 68955 | FACE PLATE, WATER PUMP |
| 18 | 46-95965A2 | COVER ASSEMBLY, Water Pump Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 19 | 26-30913 | SEAL, Oil, WATER PUMP COVER |
| 20 | 23-13127 | BEARING, WATER TUBE SEAL |
| 21 | 26-36558 | SEAL, WATER TUBE |
| 22 | 23-31792T | SLEEVE, WATER TUBE GUIDE |
| 23 | 25-30526 | RING, RUBBER-DRIVESHAFT |
| 24 | 25-62704 | O-RING, DRIVESHAFT |
| 25 | 12-30164 | WASHER, (.192 x .375 x .0312) Stainless Steel, WATER PUMP STUDS |
| 26 | 10-32,11-859124 | NUT, Stainless Steel, WATER PUMP STUDS |
| 27 | 10-28653 | SCREW, (#10-32 x 0.25), VENT-GEAR HOUSING |
| 28 | 19643 | WASHER, VENT SCREW |
| 29 | 10-79953Q04 | SCREW, (.375-16 x .250), GREASE FILLER |
| 30 | 12-191833 | WASHER, GREASE FILLER SCREW |
▶GEAR HOUSING ASSEMBLY(PROPELLER SHAFT) (21 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 26-71140A1 | SEAL KIT, Gear Housing |
| 1 | 1648-7811A9 | GEAR HOUSING ASSEMBLY, BASIC Comment: SN# US-5571990/Australia-8067540/Belgium-9252831/Canada-7145388 & Up |
| 31 | 11-20696 | NUT, PROPELLER SHAFT |
| 32 | 12-73672 | WASHER, PROPELLER SHAFT |
| 33 | 43-93398 | GEAR, Drive Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 34 | 14-79603 | WASHER, SPECIAL-PROPELLER SHAFT |
| 35 | 15-79602A1 | SHIM SET, PROPELLER SHAFT (.002-3-5-10-20) |
| 36 | 53-79601 | RING, Retaining |
| 37 | 24-91813 | SPRING, CLUTCH |
| 39 | 44-93397 | PROPELLER SHAFT Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 40 | 77424 | SPACER, PROPELLER SHAFT |
| 41 | 99210A1 | CARRIER ASSEMBLY, Bearing |
| 42 | 26-98309 | SEAL, Oil |
| 43 | 75812 | COVER, GEAR HOUSING |
| 44 | 25-68935 | O-RING, (1.799 x .103), BEARING CARRIER |
| 45 | 28-32003 | KEY, BEARING CARRIER |
| 46 | 70588 | THRUST HUB, FORWARD |
| 47 | 48-93357A10 | PROPELLER ASSEMBLY Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 48 | 93356 | THRUST HUB, AFT Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 49 | 11-82670911 | NUT, (.312-24) Stainless Steel, PROPELLER |
| 50 | 11-82670911 | NUT, (.312-24) Stainless Steel, DRIVESHAFT HOUSING STUD |
▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 37-89701A80 | DECAL SET |
▶RECOIL STARTER AND FLYWHEEL (26 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 50-97175T | STARTER ASSEMBLY, Recoil |
| 2 | 50-12066Q10 | ROPE, STARTER |
| 3 | 79470A1 | RETAINER KIT, Rope |
| 4 | 93498A2 | BRACKET ASSEMBLY, FLYWHEEL GUARD |
| 5 | 87934 | LEG, BRACKET |
| 6 | 10-54615 | SCREW, (.250-20 x .625), BRACKET AND LEG ATTACHING |
| 7 | 11-8267139 | NUT, RECOIL STARTER ATTACHING |
| 8 | 25-90329 | GROMMET, BRACKET |
| 9 | 87886 | CUP, STARTER |
| 10 | 256-7530 | FLYWHEEL |
| 11 | 28-20094 | KEY, Woodruff, FLYWHEEL DRIVE |
| 12 | 11-20696 | NUT, FLYWHEEL TO CRANKSHAFT |
| 13 | 12-69057 | WASHER, RECOIL STARTER STUD |
| 14 | 88305 | HOUSING, IGNITION MODULE |
| 15 | 88182 | IGNITION MODULE |
| 16 | 88306 | RETAINER, IGNITION MODULE |
| 17 | 10-88307 | SCREW, WIRE TO HOUSING (5/16") |
| 18 | 88188 | BUTTON, FRICITON-HOUSING |
| 19 | 24-90304 | SPRING, COMPRESSION-FRICTION BUTTON |
| 20 | 10-88186 | SCREW, (.312-24 x .500), SET-FRICTION BUTTON |
| 21 | 87885 | COIL, Ignition |
| 22 | 84-813715A1 | LEAD ASSEMBLY |
| 23 | 85-63709A1 | BOOT/TERMINAL KIT, SPARK PLUG |
| 24 | 33-88090 | SPARK PLUG (CHAMPION #QL81Y) Comment: CANADA AND BELGIUM |
| 25 | 10-60605 | SCREW, (#10-16 x .750), IGNITION COIL |
| 26 | 88221 | TAB, IDLE STOP |
▶TOP COWL, FUEL TANK AND CARBURETOR (30 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| - | 27-98540A83 | GASKET SET |
| 1 | 2178-8158A1 | TOP COWL ASSEMBLY Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 2 | 94108A1 | COVER, CARBURETOR (TOP COWL) Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 3 | 1253-8082 | TANK, Fuel Comment: SN# US-5802241/Australia-8067865/Belgium-9293011/Canada-7166028 & Up |
| 4 | 27-98807 | GROMMET, TOP COWL |
| 5 | 36-41660A2 | CAP ASSEMBLY, Fuel |
| 6 | 88297 | SCREW, VENT |
| 7 | 25-69643 | O-RING, VENT SCREW |
| 8 | 25-26722 | O-RING, FUEL CAP |
| 9 | 88298 | RETAINER, FUEL CAP |
| 9A | 11-91925 | PUSH NUT, SPEED-FUEL CAP RETAINER |
| 10 | 10-8M0214943 | SCREW, (.250-20 x 1.00), FUEL TANK TO POWERHEAD |
| 11 | 12-69057 | WASHER, FUEL TANK SCREW |
| 12 | 11-29031 | NUT, (1/4-20), FUEL TANK SCREW |
| 13 | 32-9912878 | LINE, Fuel (12" AND 3 1/4") |
| 14 | 54-68424 | CLAMP, FUEL LINE ATTACHING |
| 15 | 1385-7568 | CARBURETOR |
| 16 | 27-70417 | GASKET, CARBURETOR |
| 17 | 91-30406 | NUT, CARBURETOR ATTACHING |
| 18 | 88223 | FOLLOWER, Cam |
| 19 | 11-4002027 | NUT, CAM FOLLOWER TO CARBURETOR |
| 20 | 20-89398 | VALVE, FUEL SHUT-OFF |
| 21 | 35-76934 | FILTER, Fuel |
| 22 | 97417 | BRACKET, FUEL TANK-REAR |
| 23 | 10-90565 | SCREW, (.250-20 x .310), FUEL TANK CLAMP |
| 24 | 12-8M0204690 | WASHER, FUEL TANK SCREW |
| 25 | 90501 | BRACKET, FUEL TANK-FRONT |
| 26 | 23-90396 | BUMPER, FUEL TANK |
| 27 | 54-90497 | CLAMP, FUEL TANK ATTACHING |
| 28 | 714933 | MOLDING, TRIM-FUEL TANK CLAMP |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Mercury 3.6 running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.
- Replace water pump impeller and inspect wear plate
- Change engine oil and oil filter (check drain plug washer)
- Replace spark plugs and check ignition timing
- Drain and refill lower unit gear oil; inspect for water contamination
- Inspect fuel lines, primer bulb, and fuel filter for deterioration
- Check and replace sacrificial anodes (zinc or aluminum)
- Inspect propeller for damage; check shaft seal and cotter pin
- Check valve clearance (refer to service manual for specifications)
- Lubricate all grease points (steering, tilt tube, shift linkage)
- 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.
- Choosing a selection results in a full page refresh.