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Tohatsu MFS40/50A (2026) Parts & Diagrams
🔎 Tohatsu MFS40/50A Reference Library — Exploded parts diagrams (28 diagrams), specifications, common issues, and maintenance checklist.
The Tohatsu MFS40/50A is a 4-Stroke EFI 3-Cylinder outboard motor. Commonly used on jon boats, pontoons, and mid-size utility craft.
Quick Reference Specifications
| Specification | Value |
|---|---|
| Engine Type | 4-Stroke EFI 3-Cylinder |
| Horsepower | 40 HP |
| Displacement | 866 cc |
| Bore x Stroke | 70.0 x 75.0 mm |
| Spark Plug (Type & Gap) | NGK IKR6G8 |
| Engine Oil Capacity | 2.4 L (with filter) |
| Recommended Engine Oil | SAE 10W-30 |
| Gear Case Oil Capacity | — |
| Idle Speed (in gear) | 850 RPM |
| Full Throttle RPM Range | 5000-6000 RPM |
| 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 Tohatsu MFS40/50A:
- 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 Tohatsu MFS40/50A.
▶Fig.01 CYLINDER・CRANK CASE (23 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYB01100-1 | CYL BLOCK & CRANKCASE ASSY |
| 2 | 3H8-07636-0 | * OIL FILTER BOLT |
| 3 | 345-01111-0 | * DOWEL PIN 6-12 |
| 4 | 3R0-01113-1 | * BOLT 8-1.25-90 |
| 6 | 3KY-01114-0 | * BOLT 6-1.0-35 |
| 7 | 3KY-01195-0 | WATER JACKET INSERT (R) |
| 8 | 3KY-01196-0 | WATER JACKET INSERT (L) L=35 |
| 9 | 3B7-60218-1 | ANODE |
| 10 | 910103-5635 | BOLT |
| 11 | 3KYB02300-1 | EXHAUST COVER ASSY |
| 12 | 3KY-02305-0 | EXHAUST COVER GASKET |
| 13 | 3KK-02319-0 | BOLT 6-1.0-25 |
| 14 | 3BJ-07615-0 | OIL FILTER |
| 15 | 3KY-01030-2 | THERMOSTAT |
| 16 | 3KYB01031-0 | THERMOSTAT CAP |
| 17 | 3KY-01032-0 | THERMOSTAT CAP GASKET |
| 18 | 3NT-02095-0 | BOLT 6-1.0-35 |
| 19 | 3KY-01303-0 | ENGINE BASEMENT GASKET |
| 20 | 3KY-01513-0 | HANGER |
| 21 | 910114-0835 | BOLT |
| 22 | 940103-0800 | WASHER |
| 23 | 3KY-00115-0 | THRUST PLATE 66-48-2 |
| 25 | 940103-0600 | WASHER |
▶Fig.02 PISTON・CRANK SHAFT (15 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-00030-2 | CRANKSHAFT ASSY |
| 2 | 3KY-07750-0 | PLAIN SHAFT BEARING |
| 3 | 3KY-00122-0 | OIL SEAL 50-68-9 |
| 4 | 3KY-00121-0 | OIL SEAL 38-50-8 |
| 5 | 3KY-00040-0 | CONNECTING ROD ASSY |
| 6 | 3KY-00059-0 | * CONNECTING ROD BOLT |
| 7 | 3KY-00082-0 | BIG END BEARING |
| 8 | 3KY-87131-1 | PISTON REPAIR KIT (0.5 O/S) |
| 9 | 3KY-00004-1 | * PISTON (0.5 O/S) φ70.45 |
| 10 | 3KY-00021-0 | * PISTON PIN |
| 11 | 3LC-00024-0 | * PISTON PIN CLIP |
| 12 | 3KY-87124-1 | PISTON RING SET (0.5 O/S) φ70.5(OS) |
| 13 | 3KY-00014-1 | * PISTON RING (0.5 O/S) φ70.5(OS) |
| 14 | 3KY-00015-1 | * PISTON RING (0.5 O/S) φ70.5(OS) |
| 15 | 3KY-00016-1 | * PISTON RING-OIL (0.5 O/S) φ70.5(OS) |
▶Fig.03 CYLINDERHEAD・OIL PUMP (51 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYB01000-2 | CYLINDER HEAD COMPLETE |
| 2 | 3KYB01001-1 | * CYLINDER HEAD ASSY |
| 3 | 3KY-07810-0 | * CAMSHAFT ASSY |
| 4 | 3KY-07960-0 | * LIFTER |
| 5 | 3KY-07962-0 | * LIFTER BOLT |
| 6 | 3KY-07950-0 | * THRUST BOLT |
| 7 | 3V1-00121-0 | * OIL SEAL 30-45-8 |
| 8 | 3KY-07935-0 | * ROCKER ARM |
| 9 | 3R0-07238-0 | * ADJUSTING SCREW |
| 10 | 3H8-07237-0 | * ADJUSTING NUT |
| 11 | 3KY-07920-0 | * ROCKER ARM SHAFT |
| 12 | 3KY-07922-0 | * ROCKER SHAFT BOLT |
| 13 | 3KY-07925-0 | * ROCKER SHAFT SPRING |
| 14 | 3KY-07927-0 | * WASHER 16-23-0.5 |
| 15 | 3KY-07939-0 | * COLLAR 16-21.7-14.25 |
| 16 | 3KZ-07939-0 | * COLLAR 16-21.7-4.25 |
| 17 | 3KY-07903-0 | * VALVE SPRING |
| 18 | 3KY-07905-0 | * VALVE SPRING SEAT |
| 19 | 3R3-07204-0 | * INTAKE VALVE STEM SEAL |
| 20 | 3R3-07206-0 | * EXHAUST VALVE STEM SEAL |
| 21 | 3KY-07600-0 | * OIL PUMP ASSY |
| 22 | 910103-5650 | * BOLT |
| 23 | 3KY-07653-0 | * OIL PUMP GASKET |
| 31 | 3KM-01142-0 | ANODE PLUG ASSY |
| 32 | 3P0-01143-0 | * ANODE PLUG |
| 33 | 3T5-10046-0 | * O-RING 1.9-13 |
| 34 | 3P0-60218-0 | * ANODE |
| 35 | 921503-0530 | * SCREW |
| 36 | 3KY-01005-0 | CYLINDER HEAD GASKET |
| 37 | 3KY-01013-0 | CYLINDER HEAD BOLT M10-90 |
| 38 | 940221-1000 | WASHER |
| 39 | 3BJ-61017-1 | BOLT 8-1.25-35 |
| 40 | 345-01111-0 | DOWEL PIN 6-12 |
| 41 | 3KYB01020-0 | CYLINDER HEAD COVER ASSY |
| 42 | 3KY-01024-0 | CYLINDER HEAD COVER GASKET |
| 43 | 910103-5625 | BOLT |
| 44 | 910103-5645 | BOLT |
| 45 | 3KY-07731-0 | BREATHER CHAMBER COVER |
| 46 | 921521-0408 | SCREW |
| 47 | 3R0-71015-1 | OIL FILLER CAP |
| 48 | 3R0-07422-0 | O-RING 3.1-24.4 |
| 49 | 9701-1-1121 | SPARK PLUG (IKR6G8) |
| 50 | 3KY-07735-0 | BREATHER HOSE |
| 51 | 3T5-84398-0 | BAND 104 |
| 52 | 3KY-84398-0 | BAND |
| 53 | 3KY-07895-2 | INTAKE VALVE KIT |
| 54 | 3KY-07901-1 | * INTAKE VALVE φ32 |
| 57 | 3KY-07896-2 | EXHAUST VALVE KIT |
| 58 | 3KY-07902-1 | * EXHAUST VALVE φ28 |
| 59 | 3KY-07921-0 | * RETAINER |
| 60 | 3KY-07923-0 | * COTTER |
▶Fig.04 PULLEY・TIMING BELT (8 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-10060-0 | DRIVE PULLEY |
| 2 | 3T5-10131-0 | KEY t=4 |
| 3 | 3KY-10063-0 | BELT GUIDE |
| 4 | 3KY-10068-0 | NUT |
| 5 | 3KY-10062-1 | DRIVEN PULLEY |
| 6 | 3B7-01116-0 | WASHER 10.5-20-3.2 |
| 7 | 911103-1030 | BOLT |
| 8 | 3KY-10045-0 | TIMING BELT |
▶Fig.05 INTAKE MANIFOLD (32 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-02010-0 | INTAKE MANIFOLD ASSY |
| 2 | 3KY-10211-0 | ISC VALVE |
| 4 | 3KY-10214-0 | MAP SENSOR |
| 6 | 3KY-10200-0 | FUEL RAIL ASSY |
| 7 | 3KY-10300-0 | * FUEL INJECTOR ASSY |
| 7a | 3KY-10304-0 | ** O-RING |
| 7b | 3KY-10303-0 | ** O-RING |
| 9 | 3KY-10100-0 | THROTTLE BODY ASSY |
| 10 | 3KY-10104-0 | GASKET |
| 11 | 910103-5620 | BOLT |
| 12 | 3KY-02409-0 | INTAKE SILENCER ASSY |
| 13 | 3KY-02418-0 | GASKET |
| 14 | 3KY-03536-0 | RESTRICTOR |
| 15 | 910103-5625 | BOLT |
| 16 | 3KY-10150-1 | VAPOR SEPARATOR ASSY |
| 17 | 3KY-03230-0 | * FLOAT |
| 18 | 3KY-03232-0 | * FLOAT ARM PIN |
| 19 | 3KY-03239-0 | * FLOAT VALVE ASSY |
| 20 | 3KY-04302-0 | * FUEL FEED PUMP |
| 21 | 3KY-04319-1 | * GROMMET |
| 22 | 3KY-04325-0 | * FUEL FEED PUMP JOINT |
| 23 | 3KY-04313-0 | * GROMMET |
| 24 | 3KY-04321-0 | * FILTER (OUTLET) |
| 25 | 3KY-04314-0 | * GROMMET |
| 26 | 3KY-04322-0 | * FILTER (INLET) |
| 27 | 3KY-10154-0 | * FUEL REGULATOR |
| 28 | 3KY-10157-0 | * HOLDER |
| 29 | 3KY-10095-0 | * O-RING |
| 30 | 3KY-03235-0 | * O-RING |
| 31 | 3KY-03292-0 | * DRAIN SCREW |
| 32 | 3KY-10179-0 | * COVER |
| 33 | 3KY-10180-0 | * SEAL |
▶Fig.06 FUEL SYSTEM (30 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-06920-0 | RUBBER MOUNT |
| 2 | 940103-0800 | WASHER |
| 4 | 3KY-02165-0 | FUEL HOSE W/PROTECTOR |
| 5 | 3AC-10087-0 | CLAMP φ16.8 |
| 6 | 3KY-02203-0 | FUEL HOSE 4-9 |
| 7 | 3KY-04085-0 | FUEL HOSE W/PROTECTOR φ12 |
| 9 | 3KY-03952-0 | INSULATOR |
| 10 | 3KY-02012-0 | O-RING 1.9-33.2 |
| 11 | 910103-5635 | BOLT |
| 13 | 3B2-01111-0 | DOWEL PIN 6-16 |
| 14 | 3KY-10155-0 | BUSHING |
| 15 | 3KY-04000-0 | FUEL PUMP ASSY |
| 16 | 3KY-62415-0 | O-RING |
| 17 | 910103-5625 | BOLT |
| 18 | 910103-5645 | BOLT |
| 19 | 3KY-02605-0 | SPACER 6.5-13-22 |
| 20 | 3KY-04060-2 | LOW PERMEATION HOSE |
| 21 | 345-70114-1 | CLIP φ11.3 |
| 22 | 3GT-35143-0 | CLIP φ9.4 |
| 23 | 3RS-02230-0 | FUEL FILTER ASSY |
| 24 | 3RS-02237-0 | * CUP |
| 25 | 3RS-02235-0 | * O-RING |
| 26 | 3B7-02234-0 | * FILTER |
| 27 | 3RS-02229-0 | * FLOAT |
| 28 | 3B7-02236-0 | * O-RING |
| 29 | 3RS-02253-0 | * DRAIN VALVE |
| 30 | 3RS-02258-0 | * SEAL |
| 31 | 3RS-02239-0 | PLATE |
| 32 | 910103-5612 | BOLT |
| 33 | 3RS-02232-0 | FUEL FILTER HOLDER |
▶Fig.07 MAGNETO (24 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-06191-0 | FLYWHEEL W/RING GEAR |
| 2 | 3KY-06123-0 | ALTERNATOR ASSY |
| 3 | 334-00131-0 | KEY 19-7-5 |
| 4 | 3C7-00132-0 | NUT 20-P1.25 |
| 5 | 3C7-00133-0 | WASHER 20.5-37-5 |
| 7 | 3KY-06301-0 | RING GEAR COVER |
| 8 | 3T1-67005-0 | GROMMET 16-2.5 |
| 9 | 1E0-36056-0 | HOOK |
| 10 | 910103-0620 | BOLT |
| 11 | 3C8-66308-0 | WASHER 6-16-1.5 |
| 12 | 3A0-76079-0 | COLLAR 6.2-9-7.4 |
| 13 | 172-36008-0 | GROMMET 13-2 |
| 14 | 3KY-06008-1 | COIL BRACKET |
| 15 | 910103-5625 | BOLT |
| 16 | 345-01111-0 | DOWEL PIN 6-12 |
| 17 | 3KY-06071-0 | PULSAR COIL |
| 18 | 3KY-06070-0 | PULSAR COIL GUARD |
| 19 | 921503-5512 | SCREW |
| 20 | 3KY-06469-1 | IGNITION COIL W/R-CAP |
| 21 | 3VS-06999-0 | * PLUG CAP W/RESISTANCE |
| 22 | 910103-5620 | BOLT |
| 23 | 3KY-76174-0 | STAY |
| 24 | 3UG-72181-0 | CAUTION DECAL (B) |
| 25 | 3UR-72187-1 | CAUTION DECAL (SIGP) |
▶Fig.08 ELECTRIC PARTS(STARTER MOTOR) (17 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3UR-76010-0 | STARTER MOTOR ASSY |
| 2 | 3UR-75014-0 | * BRUSH HOLDER ASSY |
| 3 | 3UR-76314-0 | * INTERNAL GEAR |
| 4 | 3UR-76015-0 | * PINION ASSY |
| 6 | 3UR-76324-0 | * PINION STOPPER SET |
| 7 | 3UR-76320-0 | * SHIFT LEVER SET |
| 8 | 3UR-76321-0 | * MAGNETIC SWITCH |
| 9 | 3UR-76325-0 | * DUST COVER |
| 10 | 3KY-76009-0 | STARTER MOTOR BAND |
| 11 | 3FW-76007-0 | DAMPER |
| 12 | 910103-5616 | BOLT |
| 13 | 3FW-76120-0 | BATTERY CABLE |
| 14 | 3FW-76145-0 | TERMINAL CAP 15.5-18.28 |
| 15 | 910103-5612 | BOLT |
| 16 | 930103-0800 | NUT |
| 17 | 3BJ-84398-0 | BAND 135 |
| 18 | 910103-5830 | BOLT |
▶Fig.09 ELECTRIC PARTS (37 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-07611-1 | OIL PRESSURE SWITCH |
| 2 | 3VS-72510-0 | ENGINE TEMP SENSOR |
| 3 | 3KY-06901-0 | BRACKET |
| 4 | 3KY-76065-0 | RECTIFIER COMPLETE |
| 5 | 910103-5625 | BOLT |
| 6 | 3KY-76064-0 | FUSE HOLDER BRACKET |
| 8 | 3VS-76040-0 | STARTER SOLENOID |
| 9 | 910103-5608 | BOLT |
| 10 | 3C8-72580-0 | PTT SOLENOID SWITCH (A) |
| 13b | 3C8-72581-0 | PTT SOLENOID SWITCH (B) |
| 14 | 930103-0600 | * NUT |
| 14b | 941303-0600 | * SPRING WASHER |
| 15 | 3KZ-06401-2 | ECU ASSY |
| 16 | 3KY-72582-0 | SOLENOID SWITCH CORD (A) |
| 17 | 910103-0620 | BOLT |
| 18 | 3R0-66308-0 | WASHER 6-16-1.5 |
| 19 | 3KY-72583-0 | SOLENOID SWITCH CORD (B) |
| 20 | 3Y1-76145-0 | TERMINAL CAP 8-13-28 |
| 21 | 3KY-76110-5 | CORD ASSY |
| 22 | 3KY-07612-0 | * GROMMET |
| 23 | 3T1-06330-0 | * RELAY |
| 24 | 3T5-76249-0 | * FUSE 30A |
| 24a | 1E0-34093-0 | * CAP |
| 25 | 3KY-76037-0 | * CABLE TERMINAL PLUG |
| 26 | 910103-5612 | BOLT |
| 27 | 921503-0512 | SCREW |
| 28 | 3T5-84398-0 | BAND 104 |
| 29 | 3Z0-84398-0 | BAND 203 |
| 30 | 3A3-76145-0 | TERMINAL CAP 8-13-28 |
| 31 | 910103-0630 | BOLT |
| 33 | 346-67115-0 | WASHER 6.5-21-1 |
| 34 | 346-67113-0 | MOUNT 8.5-14-2.5 |
| 35 | 3B7-06920-0 | RUBBER MOUNT 8.5-14-2.5 |
| 36 | 346-67114-1 | SPACER 6.2-9-15.7 |
| 37 | 3KY-06902-0 | COVER |
| 38 | 3KZ-76037-0 | CABLE TERMINAL PLUG |
| 39 | 3KY-38136-2 | MAINTENANCE LABEL |
▶Fig.10 DRIVE SHAFT HOUSING (32 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYQ01300-0 | ENGINE BASEMENT ASSY |
| 2 | 346-01215-0 | OIL SEAL 15.8-28-6 |
| 3 | 3KY-65210-0 | COOLING HOSE |
| 5 | 3LD-01012-0 | CYLINDER HEAD BOLT 8-1.25-40 |
| 6 | 940103-0800 | WASHER |
| 7 | 3KY-07710-0 | OIL STRAINER ASSY |
| 8 | 3KY-07715-0 | PIPE L=150 |
| 9 | 369-84398-1 | BAND 202 |
| 10 | 3KY-07721-0 | OIL LEVEL GAUGE |
| 11 | 3KY-61012-0 | DRIVE SHAFT HOUSING GASKET t=0.5 |
| 12 | 3KY-67116-1 | ENGINE BASEMENT SEAL |
| 14 | 3KYW61030-1 | DRIVE SHAFT HOUSING ASSY (L) |
| 14a | 3C7-01181-0 | * SEALING PLUG |
| 15 | 3R3-07705-1 | DRAIN BOLT 14-14 |
| 16 | 3R3-07406-0 | WASHER 14.5-24-1 |
| 17 | 3KY-07740-0 | GUIDE PLATE |
| 18 | 921503-0510 | SCREW |
| 19 | 345-01111-0 | DOWEL PIN 6-12 |
| 20 | 3B7-61018-2 | BOLT 8-1.25-115 |
| 21 | 9401E3-0800 | WASHER |
| 22 | 3KYW61028-0 | COVER |
| 23 | 3KY-61029-0 | GASKET |
| 25 | 3KYW61208-0 | IDLE EXHAUST PORT COVER |
| 26 | 3KY-62114-0 | PLATE |
| 28 | 3KY-61220-0 | IDLE EXHAUST PORT GASKET |
| 29 | 9101E3-5620 | BOLT |
| 30 | 3KYQ61110-0 | EXTENSION HOUSING |
| 31 | 3AB-01111-0 | DOWEL PIN 6-12 |
| 32 | 3KY-61111-0 | STUD M10-145 |
| 33 | 3KZW61225-0 | APRON ASSY |
| 34 | 3F3-02423-0 | TAPPING SCREW 5-30 |
| 35 | 9101E3-5616 | BOLT |
▶Fig.11 GEARCASE(DRIVESHAFT) (52 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-65120-0 | WATER PIPE (UL) |
| 2 | 3KY-65206-0 | WATER PIPE SEAL (UPPER) |
| 3 | 3KY-65203-0 | LOCK PLATE |
| 4 | 3KY-65204-0 | WATER PIPE AUXILIARY MOUNT |
| 6 | 3KYW60000-1 | GEAR CASE ASSY |
| 7 | 3KY-60211-0 | * ROLLER BEARING |
| 8 | 332-60005-3 | PLUG 8-8 |
| 9 | 332-60006-1 | GASKET 8.1-15-1 |
| 10 | 3KZ-60217-0 | TRIM TAB |
| 11 | 910103-5820 | BOLT |
| 12 | 3KY-60205-0 | WATER STRAINER SET |
| 13 | 930403-0400 | * NYLON NUT 4-P0.7 |
| 14 | 921503-0430 | * SCREW |
| 15 | 3KY-60041-0 | WATER SEAL RUBBER |
| 16 | 3KY-60042-0 | WATER SEAL PLATE |
| 17 | 3KY-60218-0 | ANODE |
| 18 | 910103-5625 | BOLT |
| 19 | 930403-0600 | NYLON NUT 6-P1.0 |
| 20 | 3KY-64020-0 | BEVEL GEAR B |
| 21 | 3C8-64027-0 | NUT |
| 22 | 3KY-66014-0 | CAM ROD (UL) |
| 23 | 930103-0600 | NUT |
| 24 | 3AC-66011-2 | CLUTCH CAM |
| 25 | 951407-0312 | SPRING PIN 3-12 |
| 26 | 3R0-66031-0 | CAM ROD BUSHING |
| 27 | 332-66021-0 | O-RING 2.4-5.8 |
| 28 | 3C8-66032-0 | O-RING 3.5-21.7 |
| 29 | 9101E3-5612 | BOLT |
| 30 | 353-66024-0 | STOPPER |
| 31 | 3KY-64303-0 | DRIVE SHAFT (UL) |
| 32 | 3KY-60215-0 | TAPERED ROLLER BEARING |
| 33 | 3KY-64327-0 | DRIVE SHAFT SPRING |
| 34 | 3KY-64328-0 | DRIVE SHAFT SPRING GUIDE |
| 35 | 345-64084-0 | SHIM 41-51.5-0.5 |
| 36 | 3C8-65021-2 | WATER PUMP IMPELLER |
| 37 | 332-65022-0 | KEY 20-4.6-2 |
| 38 | 3T5-65016-0 | PUMP CASE (UPPER) |
| 39 | 3T5-65011-0 | PUMP CASE LINER |
| 40 | 3C8-65014-0 | WATER PIPE SEAL (LOWER) |
| 41 | 3KY-65002-1 | PUMP CASE ASSY (LOWER) |
| 42 | 3C8-60223-0 | * OIL SEAL 17-33-6 |
| 43 | 3C8-64084-0 | * SHIM 32.9-26-0.5 |
| 44 | 345-65015-0 | * O-RING 3.2-47 |
| 45 | 3C8-65029-3 | GUIDE PLATE GASKET |
| 46 | 3T5-65018-2 | PUMP CASE GASKET |
| 47 | 334-65012-0 | DOWEL PIN 4-10 |
| 48 | 3C8-65025-0 | WATER PUMP GUIDE PLATE |
| 49 | 9101E3-5855 | BOLT |
| 50 | 3KY-60001-0 | BOLT 10-1.25-40 |
| 51 | 3B7-61114-0 | NUT 10-P1.25 |
| 52 | 9402E3-1000 | WASHER |
| 53 | 3AB-01111-0 | DOWEL PIN 6-12 |
▶Fig.12 GEAR CASE(PROPELLER SHAFT) (26 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-64010-0 | BEVEL GEAR ASSY (A) |
| 2 | 353-64038-0 | SHIM 36-44-0.1 |
| 3 | 345-60215-0 | TAPERED ROLLER BEARING 32007 |
| 4 | 3KY-64030-0 | BEVEL GEAR C |
| 5 | 3KY-64032-0 | WASHER 22.1-26-3 |
| 6 | 3KY-64211-1 | PROPELLER SHAFT |
| 7 | 3KY-64215-0 | CLUTCH |
| 8 | 3C8-64217-0 | PIN |
| 9 | 3C8-64219-1 | SNAP |
| 10 | 3C8-64221-0 | SPRING |
| 11 | 3C8-64222-0 | SPRING RETAINER |
| 12 | 3KY-64223-0 | PUSH ROD |
| 13 | 965002-0803 | BALL 3/8 |
| 14 | 3KYW87323-1 | PROPELLER SHAFT HOUSING ASSY |
| 15 | 3KY-60102-0 | * ROLLER BEARING |
| 16 | 9601-0-6007 | * BALL BEARING 6007 |
| 17 | 3KY-60103-0 | * O-RING 3.1-79.4 |
| 18 | 3F3-60223-0 | * OIL SEAL 22-37-8 |
| 19 | 9101E3-5830 | BOLT |
| 20 | 3T5B64532-1 | PROPELLER ASSY (15") |
| 21 | 3KY-87326-0 | PROPELLER HARDWARE KIT |
| 22 | 3KY-64231-0 | * THRUST HOLDER |
| 23 | 951503-0325 | * SPLIT PIN 3-25 |
| 24 | 3TW-64232-0 | * STOPPER |
| 25 | 3TW-64124-0 | * WASHER 17-40-3 |
| 26 | 353-64121-0 | * PROPELLER NUT M16P1.5 |
▶Fig.13 BRACKET (76 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-61301-1 | RUBBER MOUNT (UPPER) |
| 3 | 3B7-61114-0 | NUT 10-P1.25 |
| 4 | 940203-1000 | WASHER |
| 5 | 3KY-61326-0 | LOCK PLATE W/BOLT |
| 6 | 3KY-61333-0 | DAMPER (UPPER) |
| 7 | 3KY-61339-0 | DAMPER (UPPER) |
| 8 | 9101E3-5830 | BOLT |
| 9 | 3KY-61343-0 | BOLT 8-1.25-70 |
| 10 | 9402E3-0800 | WASHER |
| 11 | 3KY-61302-0 | RUBBER MOUNT (LOWER) |
| 12 | 3KY-61321-0 | BOLT 12-1.25-163 |
| 13 | 9402E3-1200 | WASHER |
| 14 | 3C7-61338-0 | DAMPER 21-36-5 |
| 17 | 3KY-61336-0 | DAMPER (LOWER) |
| 18 | 3KYW61342-1 | MOUNT HOLDING PLATE (LOWER) |
| 19 | 9101E3-5820 | BOLT |
| 20 | 3KYW77211-1 | CLAMP BRACKET (PTT-R) |
| 21 | 3KYW77212-1 | CLAMP BRACKET (PTT-L) |
| 22 | 3H6-60218-0 | ANODE |
| 23 | 910103-5620 | BOLT |
| 24 | 3KY-62191-0 | SWIVEL BRACKET SHAFT ASSY |
| 25 | 3KY-77213-0 | BUSHING |
| 26 | 346-62124-1 | NYLON NUT 7/8-14 |
| 27 | 3R0-77118-0 | PTT THRUST ROD |
| 28 | 951603-1000 | SNAP PIN |
| 29 | 3KZW77208-1 | SWIVEL BRACKET ASSY |
| 30 | 344-67177-1 | GREASE FITTING |
| 31 | 3C8-62396-1 | GROUND L=210 |
| 32 | 353-63207-0 | COLLAR 10.2-24-12 |
| 33 | 3R0-62473-0 | TILT STOPPER SPRING |
| 34 | 3KZW62010-1 | STEERING SHAFT ASSY |
| 35 | 353-62417-0 | BUSHING 30-36-41 |
| 36 | 353-62423-1 | THRUST PLATE (UPPER) 31.1-50-2 |
| 37 | 353-62415-0 | O-RING 3.5-29.7 |
| 38 | 945103-2800 | C-RING d=28 |
| 39 | 3KYW61411-1 | MOUNT BRACKET |
| 40 | 338-60218-2 | ANODE |
| 41 | 910103-5616 | BOLT |
| 42 | 3Z5-77150-4 | PTT ASSY |
| 43 | 3Z5-77601-0 | GAS SHOCK ABSORBER |
| 44 | 398-62396-1 | GROUND L=130 |
| 45 | 3R0-66311-0 | REVERSE LOCK LEVER |
| 46 | 3AL-66333-0 | REVERSE LOCK LEVER GRIP |
| 47 | 910103-5612 | BOLT |
| 49 | 346-66334-0 | STOPPER |
| 50 | 3V2-60001-0 | BOLT 6-1.0-35 |
| 51 | 3Z0-84398-0 | BAND 203 |
| 52 | 345-06915-0 | CLAMP 6.5-14L |
| 53 | 9401E3-0600 | WASHER |
| 54 | 9301E3-0600 | NUT |
| 55 | 3Y1-76145-0 | TERMINAL CAP 8-13-28 |
| 56 | 3KY-77071-0 | CYLINDER PIN (UPPER) |
| 57 | 3R0-77075-0 | BUSHING 13-16-40 |
| 58 | 3KY-77075-0 | BUSHING 18-24-22 |
| 59 | 9101E3-0612 | BOLT |
| 60 | 345-05122-1 | WASHER 6.5-23-1.5 |
| 61 | 3UR-77101-0 | CYLINDER PIN (LOWER) |
| 62 | 3KY-77076-0 | BUSHING 18-24-22 |
| 63 | 3KY-77103-0 | BUSHING 18-24-60 |
| 64 | 3R0-77112-0 | WASHER 18.2-34-1 |
| 65 | 945103-1800 | C-RING d=18 |
| 66 | 3AM-72120-0 | RIGGING BOLT SET |
| 67 | 3C7-62133-2 | * BOLT 12-1.25-105 |
| 68 | 353-61334-0 | * WASHER 13-34-3 |
| 69 | 3R0-61324-0 | * NYLON NUT 12-P1.25 |
| 70 | 9401E3-1200 | * WASHER |
| 71 | 3GF-62466-1 | TILT STOPPER KIT |
| 72 | 951403-3516 | * SPRING PIN 3.5-16 |
| 73 | 369-62433-1 | * TILT STOPPER GRIP |
| 74 | 3KY-72575-0 | TRIM SENSOR KIT |
| 75 | 3Z4-72574-0 | * TRIM SENSOR L=1700 |
| 76 | 910103-0620 | * BOLT |
| 77 | 3C8-66308-0 | * WASHER 6-16-1.5 |
| 78 | 336-06973-0 | * CLAMP 6-9.5L |
| 79 | 921503-5612 | * SCREW |
| 80 | 346-62127-0 | CAP NUT |
▶Fig.14 POWER TRIM&TILT (28 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3Z5-77180-1 | MOTOR ASSY |
| 2 | 3Z5-77190-0 | * ARMATURE ASSY |
| 3 | 3Z5-77192-1 | * MOTOR BRACKET ASSY |
| 4 | 3Z5-77182-0 | ** O-RING 2-55.5 |
| 5 | 3Z5-77191-1 | ** BREAKER |
| 6 | 3SS-77183-1 | ** BRUSH |
| 7 | 3E0-77184-0 | ** BRUSH SPRING |
| 8 | 921503-0520 | * SCREW |
| 9 | 3B7-77431-1 | BOLT |
| 10 | 3B7-77433-0 | O-RING 1.5-6.5 |
| 11 | 3B7-77434-1 | FILTER |
| 12 | 3Z5-77165-1 | RESERVE TANK |
| 13 | 3Z5-77159-0 | BOLT |
| 14 | 3Z5-77221-0 | CAP ASSY |
| 15 | 3Z5-77175-0 | MANUAL VALVE ASSY |
| 16 | 3R0-77173-0 | SEAL WASHER |
| 17 | 3R0-77171-0 | C-RING |
| 18 | 3KY-77367-0 | JOINT |
| 19 | 3Z5-77166-0 | COUPLING |
| 20 | 3B7-77167-0 | O-RING 1.8-69.6 |
| 21 | 3Z5-77194-0 | SCREW |
| 22 | 3Z5-77460-0 | VALVE ASSY |
| 23 | 3Z5-77450-0 | RELIEF VALVE ASSY |
| 24 | 3R0-77451-0 | * O-RING 1.5-3.5 |
| 25 | 3B7-77430-0 | PUMP |
| 26 | 3B7-77432-1 | BOLT |
| 27 | 3Z5-77225-0 | PTT O-RING SET |
| 28 | 3KY-77374-0 | NUT |
▶Fig.15 BOTTOM COWL (47 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYW67100-1 | BOTTOM COWL |
| 2 | 3KY-67141-0 | HOOK LEVER |
| 3 | 338-67147-0 | SEAL RING 13.8-22-3.7 |
| 4 | 350-67105-0 | HOOK LEVER BUSHING 14-16.5-17.7 |
| 5 | 941403-1400 | WAVE WASHER d=14 |
| 6 | 3KY-67142-0 | COVER HOOK |
| 7 | 3R0-67517-0 | ROLLER 6.1-14.7-14 |
| 9 | 945303-0500 | E-RING d=5 |
| 10 | 3R0-66308-0 | WASHER 6-16-1.5 |
| 11 | 910103-0616 | BOLT |
| 12 | 344-67177-1 | GREASE FITTING |
| 13 | 3VS-70235-0 | FUEL HOSE JOINT |
| 14 | 3T1-03813-0 | PLUG |
| 15 | 3T5-84398-0 | BAND 104 |
| 16 | 98AB-50-450 | HOSE |
| 17 | 338-02215-0 | CLIP φ10 |
| 18 | 3GT-35143-0 | CLIP φ9.4 |
| 19 | 3KY-65212-0 | WATER HOSE |
| 20 | 3T1-01138-0 | NIPPLE 6-8-11 |
| 21 | 3NV-76080-0 | NEUTRAL SWITCH |
| 22 | 398-76083-0 | NEUTRAL SWITCH ACTUATOR |
| 23 | 3KY-06281-0 | CABLE TERMINAL HOLDER |
| 24 | 910103-5620 | BOLT |
| 25 | 3KZ-06902-0 | COVER |
| 26 | 3T1-72403-0 | FLUSHING CONNECTOR |
| 28 | 3R0-07422-0 | O-RING 3.1-24.4 |
| 29 | 3T1-72404-0 | FLUSHING CONNECTOR CAP |
| 30 | 3KY-72410-0 | FLUSHING HOSE |
| 31 | 3T1-07737-1 | CLIP φ17.8 |
| 32 | 3AC-72615-0 | PTT SWITCH ASSY |
| 33 | 3KY-72618-0 | GROMMET |
| 34 | 3KY-72413-0 | FLUSHING CONNECTOR BRACKET |
| 35 | 910103-5612 | BOLT |
| 36 | 3F3-72616-1 | GASKET |
| 37 | 3R3-66226-0 | GROMMET 40-18-3 |
| 38 | 3KY-67117-0 | GROMMET |
| 39 | 3T1-67161-0 | GROMMET |
| 40 | 346-67113-0 | MOUNT 8.5-14-2.5 |
| 41 | 346-67114-1 | SPACER 6.2-9-15.7 |
| 42 | 910103-0630 | BOLT |
| 43 | 346-67115-0 | WASHER 6.5-21-1 |
| 44 | 3VS-67129-0 | GROMMET |
| 45 | 9101E3-5612 | BOLT |
| 46 | 9301E3-0600 | NUT |
| 47 | 394-70260-1 | FUEL CONNECTOR (MALE) |
| 48 | 3H6-70262-0 | FUEL CONNECTOR PROTECTOR |
| 49 | 9101E3-5630 | BOLT |
▶Fig.16 SHIFT・THROTTLE (31 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-63718-0 | THROTTLE CAM |
| 2 | 3KY-63727-0 | SPRING |
| 3 | 3R3-66124-0 | COLLAR 6.5-10.5-22.6 |
| 4 | 910103-0635 | BOLT |
| 6 | 345-05122-1 | WASHER 6.5-23-1.5 |
| 8 | 3KY-63751-0 | THROTTLE ARM |
| 9 | 3KY-03171-0 | THROTTLE ROLLER |
| 12 | 3KY-63610-0 | LINK ROD ASSY (THROTTLE) |
| 13 | 3KY-66122-0 | SHIFT ARM |
| 14 | 3KY-76079-0 | COLLAR 6.5-10.5-9.3 |
| 15 | 910103-0620 | BOLT |
| 16 | 346-67115-0 | WASHER 6.5-21-1 |
| 17 | 3KY-66126-0 | BRACKET |
| 19 | 910103-5616 | BOLT |
| 20 | 3KY-66134-0 | SHIFT LEVER ROD |
| 23 | 3KY-66130-0 | SHIFT LEVER SHAFT ASSY |
| 24 | 3EF-66113-0 | SHIFT DETENT SPRING |
| 25 | 3Y1-66117-0 | SHIFT DETENT SUPPORTER t=0.8 |
| 27 | 3V1-66145-0 | HOLDER |
| 28 | 910103-5612 | BOLT |
| 29 | 3KYW67483-0 | REMOTE CONT CABLE STAY COVER |
| 30 | 910103-5625 | BOLT |
| 31 | 3KZ-76116-0 | GROMMET |
| 32 | 3KY-83734-0 | CABLE CLIP |
| 33 | 3M2-66226-0 | GROMMET 17-3 |
| 34 | 3KY-66215-0 | SHIFT ROD (L) |
| 35 | 951603-0500 | SNAP PIN d=5 |
| 36 | 3KY-66241-0 | SHIFT ROD JOINT M6-22 |
| 37 | 3B7-83715-2 | CABLE JOINT |
| 38 | 3AA-83719-0 | WASHER 8.5-18-1.6 |
| 39 | 951603-0800 | SNAP PIN d=8 |
▶Fig.17 STEERING (10 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KY-83880-0 | REMOTE CONTROL FITTING ASSY |
| 2 | 3KY-83830-0 | * STEERING HOOK PLATE |
| 3 | 910103-1030 | * BOLT |
| 4 | 940103-1000 | * WASHER |
| 5 | 3KY-84905-0 | * DRAG LINK ASSY |
| 6 | 353-84918-0 | ** NYLON NUT 3/8-24UNF |
| 7 | 353-84916-0 | ** WASHER 9.6-18-2 |
| 8 | 3F3-84908-0 | ** SEAL RING |
| 9 | 3B7-84914-0 | ** SPACER 9.6-19-19 |
| 10 | 353-84917-0 | ** BOLT 3/8-24UNF-45 |
▶Fig.18 TOP COWL (12 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3YG-72180-0 | CAUTION DECAL (A) |
| 2 | 3F0-72185-0 | CAUTION DECAL |
| 4 | 3KYW67645-3 | TOP COWL ASSY |
| 5 | 3URW67640-0 | * TOP COWL SUB-ASSY |
| 6 | 3KY-67501-1 | ** TOP COWL SEAL |
| 7 | 3KYW67521-0 | ** TILT HANDLE |
| 8 | 930403-0600 | ** NYLON NUT 6-P1.0 |
| 9 | 3C8-66308-0 | ** WASHER 6-16-1.5 |
| 10 | 3UG-67541-0 | * SIDE DECAL |
| 11 | 3SS-67580-0 | * LOGO DECAL |
| 12 | 3UY-67536-2 | * REAR DECAL |
| 13 | 3ZB-67538-0 | * SIMPLIQ DECAL |
▶Fig.19 FUEL TANK (21 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3H6-70200-2 | PRIMER BULB ASSY |
| 1a | 3VS-70232-0 | PRIMER BULB ASSY W/BAND |
| 2 | 3C7-70220-1 | ** JOINT ASSY (INLET) |
| 2a | 1D8-70225-0 | * PRIMER BULB SUB-ASSY |
| 3 | 3C7-70224-1 | ** JOINT ASSY (OUTLET) |
| 4 | 3C7-70211-1 | ** PRIMER BULB |
| 5 | 3C7-70217-0 | ** CLAMP |
| 6 | 98AB-70-700 | * HOSE |
| 7 | 98AB-701600 | * HOSE |
| 8 | 3GF-70281-0 | * FUEL CONNECTOR |
| 9 | 3GR-70250-0 | * FUEL CONNECTOR |
| 10 | 332-70201-0 | * CLAMP |
| 11 | 3T5-84398-0 | * BAND 104 |
| 12 | 3KZ-70177-0 | FUEL TANK ASSY 25L |
| 13 | 3E0-70270-0 | * QUICK-CONNECTOR (MALE) |
| 14 | 3AC-70157-0 | * FUEL PICK-UP ASSY W/GAUGE |
| 15 | 3RS-70020-0 | * FUEL TANK CAP ASSY |
| 16 | 3RS-70021-0 | ** TANK FILLER CAP GASKET |
| 17 | 3AC-70140-0 | * SCREW |
| 18 | 3AC-70145-0 | * WASHER |
| 19 | 3AC-70150-0 | * GASKET |
▶Fig.20 MULTI TILLER HANDLE (53 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYW63000-7 | TILLER HANDLE KIT |
| 2 | 3KY-63600-0 | * THROTTLE WIRE |
| 3 | 3KY-66196-0 | * SHIFT CABLE |
| 4 | 398-06830-0 | * STOP SWITCH ASSY |
| 5 | 31H-06848-0 | ** STOP SWITCH LANYARD ASSY |
| 7 | 3GF-76020-0 | * MAIN SWITCH ASSY |
| 8 | 3GF-76219-0 | ** MAIN SWITCH KEY |
| 9 | 3GF-76205-0 | ** MAIN SWITCH KEY COVERING CAP |
| 10 | 3T5-76022-0 | * MAIN SWITCH CAP (WATERPROOF) |
| 11 | 3GF-71040-0 | * PILOT LAMP ASSY |
| 12 | 3GF-72019-1 | * THROTTLE DECAL |
| 13 | 3GF-67578-2 | * SHIFT DECAL |
| 14 | 3GF-72198-1 | * WARNING LAMP DECAL |
| 15 | 3GF-72200-1 | * STOP SWITCH DECAL |
| 16 | 3GF-84339-1 | * INSTRUCTION DECAL |
| 17 | 3UR-63320-0 | * TILLER HANDLE COVER |
| 18 | 3GF-63624-0 | * GROMMET |
| 19 | 3KY-76119-0 | * CORD ASSY |
| 20 | 3AHW62000-1 | * STEERING BRACKET ASSY |
| 21 | 3GF-65012-0 | ** DOWEL PIN 8-16 |
| 22 | 9153E3-1040 | * STUD M10-40 |
| 23 | 930403-1000 | * NYLON NUT 10-P1.5 |
| 25 | 3GF-63201-0 | * BOLT 10-1.25-80 |
| 26 | 3GF-63305-0 | * CONICAL SPRING WASHER 10.5-21-2.3 |
| 27 | 3GF-63025-0 | * SPACER 10.5-23-9 |
| 28 | 3GF-63102-0 | * BUSHING 10.5-12.7-13.5 |
| 29 | 9401E3-1000 | * WASHER |
| 30 | 3GF-63310-0 | * LOCK NUT 10-P1.25 |
| 31 | 3GF-62004-0 | CORD HOLDER |
| 32 | 3T5-06437-0 | TAPPING SCREW 6-16 |
| 33 | 3KY-62447-0 | * PLATE |
| 34 | 3V1-60108-0 | * PRE-COATED BOLT 6-1.0-16 |
| 35 | 3V5-62442-0 | * NYLON NUT 8-P1.25 |
| 36 | 3B7-63730-0 | * WASHER 8.5-24-1.5 |
| 37 | 3GF-62449-0 | * DISC 8.5-25-2 |
| 38 | 3KY-62441-0 | * FRICTION LEVER |
| 39 | 3AC-63012-0 | * GRIP |
| 40 | 346-66334-0 | * STOPPER |
| 41 | 3R3-62443-0 | * WASHER 8.1-20-0.8 |
| 42 | 3GF-62445-0 | * BOLT 8-1.25-32 |
| 43 | 3GF-63205-0 | * SCREW SET |
| 44 | 3UR-63193-1 | * GRIP PARTS KIT |
| 45 | 3UR-63062-0 | * THROTTLE SHAFT KIT |
| 46 | 3GF-63067-0 | * THROTTLE LINK ASSY |
| 47 | 3GF-63032-0 | * THROTTLE FRICTION ASSY |
| 48 | 3GF-66160-0 | * SHIFT UNIT ASSY |
| 49 | 3GF-66158-0 | * SHIFT LEVER KIT |
| 50 | 3GF-66198-0 | * CABLE BRACKET KIT |
| 51 | 3GF-76175-0 | * BUZZER KIT |
| 52 | 346-62127-0 | * CAP NUT |
| 53 | 3VS-63025-0 | * SPACER |
| 54 | 3VV-63025-0 | * SPACER |
| 55 | 9216E3-0625 | * SCREW |
▶Fig.21 COMPONENT PARTS OF REMOTE CONTROL (53 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3U2B84500-2 | REMOTE CONTROL HEAD ASSY |
| 2 | 3A3-84365-1 | * THROTTLE ARM |
| 3 | 3A3-84428-0 | * THROTTLE FRICTION ARM |
| 4 | 945303-0600 | * E-RING d=6 |
| 5 | 353-84394-0 | * WASHER |
| 6 | 3U2-84427-0 | * ADJUSTING SCREW |
| 7 | 3A3-84381-0 | * SHIFT GEAR ASSY |
| 8 | 3A3-83314-2 | * CABLE TERMINAL |
| 9 | 3A3-84364-2 | * DRIVE GEAR |
| 10 | 930103-0500 | * NUT |
| 11 | 910103-0525 | * BOLT |
| 12 | 3A3-84376-0 | * GROMMET |
| 13 | 3U2B84441-0 | * REAR HOUSING |
| 14 | 3U2B84366-0 | * REAR PANEL |
| 15 | 3U2-84401-0 | * NEUTRAL LOCK ARM |
| 16 | 3A3-84403-0 | * NEUTRAL LOCK SPRING |
| 17 | 3U2-84404-0 | * GRIP |
| 18 | 3U2-84343-0 | * CONTROL LEVER |
| 19 | 3A3-84368-0 | * WAVE WASHER |
| 20 | 3A3-84391-0 | * FREE THROTTLE DRUM |
| 21 | 3A3-84435-0 | * BUSHING |
| 22 | 3A3-84422-0 | * THRUST PLATE |
| 23 | 921603-0512 | * SCREW |
| 24 | 3VS-84339-0 | * INSTRUCTION DECAL |
| 25 | 3A3-84432-0 | * BUSHING |
| 26 | 3U2-84375-0 | * SCREW |
| 27 | 3VK-84375-0 | * SCREW |
| 27a | 3U2-64333-0 | * PRE-COATED SCREW |
| 28 | 3VL-84375-0 | * SCREW |
| 29 | 3A3-84374-0 | * SPACER |
| 30 | 353-84371-0 | * WASHER |
| 31 | 3U2-84371-0 | * WASHER |
| 32 | 930103-0600 | * NUT |
| 33 | 3A3-84383-0 | * WASHER |
| 34 | 3A3-84421-0 | * ROLLER |
| 35 | 3U2-84431-0 | * BUSHING |
| 36 | 940103-0800 | * WASHER |
| 37 | 3U2-84442-0 | * BOLT |
| 38 | 353-84388-0 | * DETENT ROLLER |
| 39 | 3U2B84312-0 | * FREE THROTTLE LEVER |
| 40 | 921503-0406 | * SCREW |
| 41 | 3A3-84423-0 | * DETENT RETAINER |
| 42 | 3A3-84307-0 | * DETENT SPRING |
| 43 | 3A3-84424-0 | * FREE THROTTLE ROLLER |
| 44 | 3A3-84426-0 | * ROLLER RETAINER |
| 45 | 3A3-84425-0 | * FREE THROTTLE SPRING |
| 46 | 3U2-63107-0 | * COVER |
| 47 | 3U2-63506-0 | * HOLDER |
| 48 | 3U2-84917-0 | * BOLT |
| 49 | 3U2-77367-0 | * JOINT |
| 50 | 3U2-06973-0 | * CLAMP |
| 51 | 3U2-72187-0 | * CAUTION DECAL (SIGP) |
| 52 | 3U2B84440-0 | * FRONT HOUSING |
▶Fig.22 COMPONENT PARTS OF REMOTE CONTROL(ELECTRIC PARTS) (16 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3GF-76020-0 | MAIN SWITCH ASSY |
| 2 | 3GF-76219-0 | * MAIN SWITCH KEY |
| 3 | 3GF-76205-0 | * MAIN SWITCH KEY COVERING CAP |
| 4 | 3T5-76115-1 | CORD ASSY L=6200 |
| 5 | 353-72546-0 | ASSIST CORD (RED) L=200 |
| 6 | 3VS-84331-0 | DECAL (LEVER) |
| 7 | 3U2-84336-1 | SHIFT POSITION DECAL |
| 9 | 3U2-84398-0 | BAND |
| 10 | 3T5-76086-0 | NEUTRAL SWITCH (REMOTE CONT) |
| 11 | 921503-5316 | SCREW |
| 12 | 3U2-72615-0 | PTT SWITCH ASSY |
| 13 | 3C8-76171-0 | OVERHEAT BUZZER |
| 14 | 3A3-06830-0 | STOP SWITCH ASSY |
| 15 | 31H-06848-0 | * STOP SWITCH LANYARD ASSY |
| 16 | 3VS-72200-0 | STOP SWITCH DECAL 0 |
| 17 | 3U2-84334-0 | REMOTE CONTROL LOGO DECAL |
▶Fig.23 OPTIONAL PARTS・ACCESSORIES (22 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3B7-72201-0 | SAFETY ROPE φ5-1600 |
| 2 | 3T1-72405-1 | HOSE JOINT (WATER-WORKS) |
| 3 | 3BJ-72100-1 | TOOL KIT |
| 4 | 3WA-72523-3 | TRIM METER KIT |
| 4a | 3VS-72523-0 | TRIM METER KIT |
| 5 | 3WA-72647-3 | TACHOMETER |
| 6 | 3WA-72532-1 | HOUR METER KIT |
| 7 | 3WA-72531-1 | VOLTMETER KIT |
| 8 | 3WA-72527-3 | WATER PRESSURE METER KIT |
| 10 | 3WA-72600-1 | FUEL METER KIT |
| 11 | 3A3-81301-0 | TWIN REMOTE CONTROL KIT |
| 12 | 3Z4-72573-0 | EXTENSION CORD (TRIM SENSOR) L=2000 |
| 13 | 3T5-76112-0 | EXTENSION CORD L=2000 (2P) |
| 14 | 3ZG-76114-0 | EXTENSION CORD L=9000 (11P) |
| 15 | 3UW-72673-1 | SPEEDOMETER KIT (70MPH) |
| 16 | 3KY-72538-0 | SPEEDOMETER LEAD WIRE |
| 17 | 3KY-72546-0 | ASSIST CORD (RED) |
| 18 | 3RT-02230-0 | FUEL FILTER ASSY |
| 19 | 3RT-02259-0 | FUEL FILTER REPAIR KIT |
| 20 | 3HS-76166-0 | ASSIST CORD COMPLETE |
| 21 | 3HS-72548-0 | ASSIST CORD (BLK) |
| 22 | 3HG-72548-0 | ASSIST CORD (BLK) |
▶Fig.23A OPTIONAL PARTS(1) (8 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3ZG-76131-1 | ENGINE DROP CABLE L=6m |
| 1a | 3SS-06973-0 | * CLAMP |
| 2 | 3ZG-76132-0 | BACKBONE CABLE L=6m |
| 3 | 3ZG-76120-0 | BATTERY CABLE |
| 4 | 3ZG-76153-0 | TERMINATOR (MALE) |
| 5 | 3ZG-76152-0 | TERMINATOR (FEMALE) |
| 6 | 3ZG-76151-0 | TEE CONNECTOR |
| 7 | 3SS-76049-0 | LEAD WIRE |
▶Fig.24 OPTIONAL PARTS(2) (16 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3U3-84490-2 | CONTROL HEAD ASSY (TOP-SINGLE) |
| 1a | 3U3-84543-0 | * BASE BEZEL |
| 2 | 3U3-84540-2 | CONTROL HEAD ASSY (TOP-TWIN) |
| 2a | 3U6-84543-0 | * BASE BEZEL |
| 3 | 3U3-84620-2 | CONT HEAD ASSY(CENTER CONSOLE) |
| 4 | 3U3-84600-2 | CONT HEAD ASSY (FLUSH MOUNT) |
| 5 | 3U3-84541-2 | BEZEL COVER KIT |
| 6 | 3U6-84541-2 | BEZEL COVER KIT |
| 7 | 3U3-84373-0 | SPACER SET |
| 8 | 3U6-84373-0 | SPACER SET |
| 9 | 3U3-84313-0 | FREE THROTTLE BUTTON |
| 10 | 3U8-84541-2 | BEZEL COVER KIT |
| 11 | 3U8-84313-0 | FREE THROTTLE BUTTON |
| 12 | 3U3-83710-0 | CABLE JOINT ASSY |
| 13 | 3U3-72560-0 | PTT SWITCH ASSY |
| 14 | 3U3-76086-0 | NEUTRAL SWITCH (REMOTE CONT) |
▶Fig.25 RIGGING KIT（1) (27 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3KYQ84555-6 | PRE-RIGGING KIT (GENERIC SIDE) |
| 9 | 3UW-84556-0 | PRE-RIGGING KIT(GENERIC FLUSH) |
| 10 | 3UR-72647-3 | * TACHOMETER |
| 14 | 3KY-72537-0 | * METER LEAD WIRE L=8000 |
| 16 | 353-72548-0 | * ASSIST CORD (BLK) L=200 |
| 21 | 3KY-72575-0 | * TRIM SENSOR KIT |
| 22 | 3KY-83880-0 | * REMOTE CONTROL FITTING ASSY |
| 23 | 3ZG-84555-1 | PRE-RIGGING KIT (GENERIC SIDE) |
| 24 | 3U2B84500-1 | * REMOTE CONTROL HEAD ASSY |
| 25 | 3PA-72638-2 | * TACHOMETER KIT |
| 26 | 3UR-72523-3 | * TRIM METER KIT |
| 29 | 3YU-84556-1 | PRE-RIGGING KIT(GENERIC FLUSH) |
| 30 | 3VS-72638-1 | * TACHOMETER KIT |
| 31 | 3VS-72523-0 | * TRIM METER KIT |
| 33a | 3UR-06869-0 | * BRACKET |
| 33b | 3UR-76201-0 | * MAIN SWITCH PANEL |
| 33c | 3YU-06869-0 | * BRACKET |
| 33d | 3YU-06882-0 | * STOP SWITCH PANEL |
| 34 | 3KY-72539-0 | * TACHOMETER LEAD WIRE L=2000 |
| 35 | 3T1-72573-1 | * EXTENSION CORD (TRIM SENSOR) L=6000 |
| 37 | 3UR-76020-0 | MAIN SWITCH ASSY |
| 37a | 3UR-76219-0 | ** MAIN SWITCH KEY F-303 |
| 38 | 3Y9-06830-0 | * STOP SWITCH ASSY |
| 39 | 353-76205-1 | * MAIN SWITCH KEY COVERING CAP |
| 40 | 3Y9-76171-0 | * OVERHEAT BUZZER |
| 41 | 3Y9-76049-0 | LEAD WIRE L=200 |
| 42 | 3Y9-76251-0 | LAMP PANEL ASSY |
▶Fig.25 RIGGING KIT（2) (9 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3UY-84550-0 | PRE-RIGGING KIT |
| 2 | 3UR-76020-0 | * MAIN SWITCH ASSY |
| 3 | 3UR-76219-0 | ** MAIN SWITCH KEY F-303 |
| 4 | 3YT-06869-0 | * BRACKET |
| 5 | 3YT-76201-0 | * MAIN SWITCH PANEL |
| 6 | 3Y9-06830-0 | * STOP SWITCH ASSY |
| 7 | 353-76205-1 | * MAIN SWITCH KEY COVERING CAP |
| 8 | 3KY-72539-0 | * TACHOMETER LEAD WIRE L=2000 |
| 9 | 3Y9-76171-0 | * OVERHEAT BUZZER |
▶Fig.26 ASSEMBLY・KIT PARTS (11 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3NRW87302-4 | LOWER UNIT ASSY (L) |
| 2 | 3KYB87090-C | ENGINE SHORT BLOCK KIT |
| 3 | 3V1-00121-0 | * OIL SEAL 30-45-8 |
| 4 | 3KY-87321-1 | LOWER UNIT GASKET SET |
| 5 | 921503-0510 | * SCREW |
| 6 | 9101E3-5855 | * BOLT |
| 7 | 3Z5-65238-1 | * PUMP CASE LINER |
| 8 | 951407-0312 | * SPRING PIN 3-12 |
| 9 | 9701-1-1121 | * SPARK PLUG (IKR6G8) |
| 10 | 3UR-72601-0 | PTT SWITCH COVER KIT |
| 11 | 3UR-72609-0 | PTT SWITCH KIT |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Tohatsu MFS40/50A 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.
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