Mercury 3.6 (9252831 & Up) Parts & Diagrams

OEM and aftermarket replacement parts for Mercury 3.6. Scroll down for exploded parts diagrams (10), specifications, and maintenance reference.

Mercury 3.6 (9252831 & 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) CARBURETOR ASSEMBLY
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) CLAMP AND SWIVEL BRACKET ASSEMBLY
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) CRANKSHAFT, PISTON AND CONNECTING ROD ASSEMBLY
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) CYLINDER BLOCK AND CRANKCASE ASSEMBLY
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) DRIVESHAFT HOUSING ASSEMBLY
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) GEAR HOUSING ASSEMBLY(DRIVESHAFT)
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) GEAR HOUSING ASSEMBLY(PROPELLER SHAFT)
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) MISCELLANEOUS PARTS/ACCESSORIES
Ref OEM Part # Part Name
- 37-89701A80 DECAL SET
RECOIL STARTER AND FLYWHEEL (26 parts) RECOIL STARTER AND FLYWHEEL
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) TOP COWL, FUEL TANK AND CARBURETOR
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.

  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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