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Tohatsu MX15/18E2 (2016) Parts & Diagrams
🔎 Tohatsu MX15/18E2 Reference Library — Exploded parts diagrams (16 diagrams), specifications, common issues, and maintenance checklist.
The Tohatsu MX15/18E2 is a 2-Stroke outboard motor. A popular choice for small fishing boats, inflatable RIBs, and sailboat auxiliaries.
Quick Reference Specifications
| Specification | Value |
|---|---|
| Engine Type | 2-Stroke |
| Horsepower | 15 HP |
| Displacement | 294 |
| Bore x Stroke | 60 x 52 |
| Spark Plug (Type & Gap) | NGK BP7HS-10 |
| Engine Oil Capacity | — |
| Recommended Engine Oil | TC-W3 Certified 2-Stroke Oil |
| Gear Case Oil Capacity | 370 mL |
| Idle Speed (in gear) | 800 |
| Full Throttle RPM Range | 5200-5800 |
| 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 MX15/18E2:
- 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
- Fuel System Issues / Hard Starting: Stale fuel and ethanol-related deposits are common in 2-stroke carbureted engines. Clean or rebuild carburetors and replace fuel lines if deteriorated. → Recommended: Carburetor Repair Kit, Fuel Line Assembly
- Spark Plug Fouling: 2-stroke engines are prone to spark plug fouling from oil residue, especially at low RPM. Replace plugs at each annual service. → Recommended: OEM Spark Plugs
- 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
- Thermostat Failure: A stuck thermostat can cause overheating or poor warm-up. Replace if operating temperature is inconsistent. → Recommended: Thermostat Assembly
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 MX15/18E2.
▶ASSEMBLY・KIT PARTS (25 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3NTQ87304-0 | LOWER UNIT ASSY (UL) |
| 2 | 3G2-66901-0 | REVERSE LOCK SHIFT LEVER KIT |
| 3 | 3B2-66322-1 | * REVERSE LOCK |
| 4 | 3G2-66324-0 | * REVERSE LOCK SHAFT |
| 5 | 945303-0500 | * E-RING d=5 |
| 6 | 369-62434-0 | * SPRING |
| 7 | 3G2-66305-0 | * REVERSE LOCK LINK |
| 8 | 3G2-62434-0 | * SPRING |
| 9 | 350-66223-0 | * PIN |
| 10 | 951403-0535 | * SPRING PIN |
| 11 | 345-05224-0 | * ROD SNAP 5-2.5 |
| 12 | 350-66337-0 | * SPACER 6.1-12-12 |
| 13 | 350-66302-0 | * REVERSE LOCK LINK JOINT |
| 14 | 951503-0212 | * SPLIT PIN 2-12 |
| 15 | 951503-1610 | * SPLIT PIN 1.6-10 |
| 16 | 951403-0312 | * SPRING PIN 3-12 |
| 19 | 3LDJ87090-5 | ENGINE SHORT BLOCK KIT |
| 20 | 922503-0410 | * SCREW |
| 21 | 3M3-01303-0 | * ENGINE BASEMENT GASKET |
| 22 | 9101E3-5652 | * BOLT |
| 23 | 3LD-65231-0 | WATER PUMP KIT (CHROME PLATED) |
| 24 | 3FS-65029-0 | * GUIDE PLATE GASKET |
| 25 | 951603-0800 | * SNAP PIN d=8 |
| 26 | 3BJ-60001-0 | * BOLT 8-31 |
| 27 | 3LD-00090-0 | * NEEDLE ROLLER SET |
▶BOTTOM COWL (37 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3NTQ67100-0 | BOTTOM COWL |
| 3 | 9101E3-5620 | BOLT |
| 4 | 3G2-67151-1 | CHOKE ROD |
| 5 | 350-67104-0 | CHOKE ROD BUSHING |
| 6 | 338Q67141-0 | HOOK LEVER |
| 7 | 338-67147-0 | SEAL RING 13.8-22-3.7 |
| 8 | 350-67105-0 | HOOK LEVER BUSHING 14-16.5-17.7 |
| 9 | 3C8-67146-0 | WASHER 14-22-1 |
| 10 | 941403-1400 | WAVE WASHER d=14 |
| 11 | 345-67142-1 | COVER HOOK |
| 12 | 910103-0612 | BOLT |
| 13 | 3C8-66308-0 | WASHER 6-16-1.5 |
| 14 | 345-66226-0 | GROMMET 17-3 |
| 17 | 346-67165-0 | GROMMET 68-20-2.8 |
| 18 | 353-67162-0 | GROMMET 41-14-3 |
| 19 | 3M2-66226-0 | GROMMET 17-3 |
| 21 | 398-06830-0 | STOP SWITCH ASSY |
| 22 | 353-06821-0 | * STOP SWITCH LANYARD ASSY |
| 23 | 336-06973-0 | CLAMP 6-9.5L |
| 25 | 921503-5612 | SCREW |
| 26 | 3B2-70260-1 | FUEL CONNECTOR (MALE) |
| 27 | 332-70261-0 | NUT 10-P1.25 |
| 28 | 336-70112-0 | GASKET 10.2-16-0.5 |
| 29 | 98AB-50-185 | HOSE |
| 30 | 338-02215-0 | CLIP φ10 |
| 31 | 350-63061-1 | THROTTLE SHAFT |
| 32 | 945303-0600 | E-RING d=6 |
| 33 | 350-63063-0 | THROTTLE SHAFT SUPPORT |
| 34 | 910103-7630 | BOLT |
| 35 | 369-72025-0 | SPARK PLUG DECAL (BP7HS10) |
| 36 | 350-61012-2 | DRIVE SHAFT HOUSING GASKET |
| 37 | 9101E3-0518 | BOLT |
| 38 | 9401E3-0500 | WASHER |
| 39 | 9301E3-0500 | NUT |
| 40 | 9101E3-0416 | BOLT |
| 41 | 9401E3-0400 | WASHER |
| 42 | 9301E3-0400 | NUT |
▶BRACKET (71 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3V6Q62112-2 | CLAMP BRACKET (R) |
| 2 | 3V6Q62113-1 | CLAMP BRACKET (L) |
| 5 | 3V6-62117-0 | DISTANCE PIECE |
| 7 | 9401E3-0600 | WASHER |
| 8 | 930103-0600 | NUT |
| 9 | 3AC-62191-0 | SWIVEL BRACKET SHAFT ASSY |
| 10 | 346-62124-1 | NYLON NUT 7/8-14 |
| 11 | 349-62126-0 | BUSHING |
| 12 | 346-62127-0 | CAP NUT |
| 13 | 350-62121-2 | THRUST ROD |
| 14 | 369-62122-2 | THRUST ROD SPRING |
| 15 | 3G2Q62310-1 | SWIVEL BRACKET |
| 16 | 344-67177-1 | GREASE FITTING |
| 17 | 345-62441-0 | FRICTION PIECE |
| 18 | 346-62421-1 | FRICTION SPRING |
| 19 | 9101E3-0830 | BOLT |
| 20 | 3LDQ62010-0 | STEERING SHAFT ASSY |
| 21 | 350-63064-0 | UNIVERSAL PINION |
| 22 | 350-62417-0 | BUSHING 24-30-30 |
| 23 | 350-62423-0 | THRUST PLATE (UPPER) |
| 24 | 350-62415-0 | O-RING 3.5-22 |
| 25 | 350-61301-0 | RUBBER MOUNT (UPPER) |
| 26 | 350-61337-0 | DAMPER (UPPER) |
| 27 | 398-61307-0 | BOLT 10-45 |
| 28 | 940103-1000 | WASHER |
| 29 | 398-61308-2 | WASHER 10.5-27-1.2 |
| 30 | 350-61302-0 | RUBBER MOUNT (LOWER) |
| 31 | 350-61336-0 | DAMPER (LOWER) |
| 32 | 350Q61402-1 | MOUNT BRACKET (L) |
| 33 | 350Q61401-0 | MOUNT BRACKET (R) |
| 34 | 9161E3-0885 | BOLT |
| 35 | 9161E3-0855 | BOLT |
| 37 | 3P0-66233-0 | WASHER 8.1-16-1.5 |
| 38 | 338-60218-2 | ANODE |
| 39 | 910103-5620 | BOLT |
| 40 | 3G2Q62993-1 | TILT STOPPER |
| 41 | 951403-0540 | SPRING PIN |
| 42 | 350-62437-0 | BUSHING 8.2-10-26.5 |
| 43 | 350-62439-1 | SETTING PLATE |
| 44 | 9101E3-5818 | BOLT |
| 45 | 3C8-62421-1 | FRICTION SPRING |
| 46 | 346-62438-0 | SETTING PIECE |
| 49 | 398-62396-1 | GROUND L=130 |
| 50 | 910103-5612 | BOLT |
| 51 | 3A3-62396-1 | GROUND L=110 |
| 52 | 3G2-66311-1 | REVERSE LOCK LEVER |
| 53 | 3AL-66333-0 | REVERSE LOCK LEVER GRIP |
| 54 | 346-66334-0 | STOPPER |
| 55 | 3R0-66308-0 | WASHER 6-16-1.5 |
| 56 | 3AA-83719-0 | WASHER 8.5-18-1.6 |
| 57 | 3AL-05254-0 | SHOULDER BOLT 6-8 |
| 59 | 3AL-05212-0 | BUSHING 8.1-20 |
| 60 | 3G2-66351-0 | REVERSE LOCK (R) |
| 61 | 3G2-66313-1 | REVERSE LOCK ARM |
| 62 | 3G2-66319-1 | REVERSE LOCK SHAFT |
| 63 | 945303-0600 | E-RING d=6 |
| 64 | 3G2-66321-0 | REVERSE LOCK ROD |
| 65 | 951503-0212 | SPLIT PIN 2-12 |
| 66 | 3G2-66312-1 | REVERSE LOCK LINK |
| 67 | 350-66315-0 | REVERSE LOCK SPRING |
| 68 | 3G2-66331-0 | REVERSE LOCK SPRING (S) |
| 69 | 910103-0885 | BOLT |
| 70 | 930103-0800 | NUT |
| 71 | 940103-0800 | WASHER |
| 72 | 3V1Q62105-0 | CLAMP SCREW KIT |
| 73 | 3V1Q62108-0 | * CLAMP SCREW ASSY |
| 74 | 3V1-62106-0 | ** CLAMP SCREW |
| 75 | 332Q62102-1 | ** CLAMP SCREW HANDLE |
| 76 | 3C8-62104-2 | ** RIVET 3-22 |
| 77 | 332-62101-1 | * CLAMP SCREW PAD |
| 78 | 3C8-62107-0 | * SHOULDER BOLT |
▶CARBURETOR (30 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3LD-03100-1 | CARBURETOR ASSY |
| 2 | 3M2-04616-0 | * MAIN JET (#116) |
| 3 | 3M2-04560-0 | * SLOW JET (#60) |
| 4 | 3C8-03169-0 | * PLUG |
| 5 | 3LD-03147-0 | FLOAT VALVE |
| 6 | 3C8-03126-0 | * FLOAT ARM PIN |
| 7 | 3C8-03125-0 | * FLOAT |
| 8 | 921722-0410 | * SCREW |
| 9 | 3C8-03179-1 | * STOP SCREW |
| 10 | 3C8-03157-0 | * SPRING |
| 11 | 3G2-03156-0 | * ADJUST SCREW |
| 12 | 3G2-03120-0 | * FLOAT CHAMBER |
| 13 | 3C8-03121-0 | * FLOAT CHAMBER GASKET |
| 14 | 922503-0410 | * SCREW |
| 15 | 910306-0405 | * BOLT |
| 16 | 3C8-03193-0 | * GASKET |
| 17 | 3G2-03141-0 | * MAIN NOZZLE |
| 18 | 3C8-03181-0 | * CARBURETOR COVER |
| 19 | 3C8-03182-0 | * CARBURETOR COVER GASKET |
| 20 | 3C8-03180-0 | * RUBBER PLUG |
| 21 | 3M3-04004-0 | PUMP COVER |
| 22 | 3E3-64333-0 | * PRE-COATED SCREW |
| 23 | 3C8-04018-0 | * PUMP COVER GASKET |
| 24 | 350-04014-0 | * CHECK VALVE |
| 25 | 921703-0305 | * SCREW |
| 26 | 930203-0300 | * NUT |
| 27 | 350-04005-0 | * PUMP DIAPHRAGM |
| 28 | 3C8-04028-0 | * PUMP BODY GASKET |
| 29 | 3C8-04002-0 | * PUMP BODY |
| 30 | 3C8-02011-0 | CARBURETOR GASKET |
▶CYLINDER・CRANK CASE (61 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3LDJ01100-2 | CYL BLOCK & CRANKCASE ASSY |
| 5 | 338-01131-1 | * NIPPLE 4.8-5 |
| 6 | 393-01131-0 | * NIPPLE 5.5-5 |
| 7 | 393-01137-0 | * NIPPLE 5-4-5 |
| 10 | 345-01111-0 | * DOWEL PIN 6-12 |
| 11 | 3LDJ01001-0 | CYLINDER HEAD ASSY |
| 12 | 350-01093-0 | * WELCH PLUG |
| 13 | 350-01005-1 | CYLINDER HEAD GASKET |
| 14 | 3LD-01012-0 | CYLINDER HEAD BOLT |
| 15 | 940103-0800 | WASHER |
| 16 | 350-01030-1 | THERMOSTAT |
| 17 | 3H6J01031-0 | THERMOSTAT CAP |
| 18 | 346-01032-0 | THERMOSTAT CAP GASKET |
| 19 | 9101E3-5630 | BOLT |
| 20 | 3P0-60218-0 | ANODE |
| 22 | 350J02300-1 | EXHAUST COVER ASSY |
| 23 | 9106E3-0808 | * BOLT |
| 24 | 332-60006-0 | * GASKET 8.1-15-1 |
| 25 | 350J02302-1 | EXHAUST COVER (INNER) |
| 26 | 350-02305-2 | EXHAUST COVER GASKET |
| 27 | 350-02306-2 | EXHAUST COVER GASKET |
| 28 | 3NT-02319-0 | BOLT 25mm |
| 29 | 940103-0600 | WASHER |
| 32 | 98AL-40-030 | HOSE |
| 33 | 98AL-40-220 | HOSE |
| 34 | 3LC-01160-0 | CHECK VALVE |
| 35 | 3T5-01133-0 | CLIP φ8 |
| 37 | 3T5-84398-0 | BAND 104 |
| 38 | 98AB-30-270 | HOSE |
| 39 | 338-01133-0 | CLIP φ7 |
| 41 | 350-05211-0 | THROTTLE LIMITER ARM |
| 42 | 350-05227-2 | THROTTLE LIMITER SHAFT |
| 43 | 941403-0800 | WAVE WASHER d=8 |
| 44 | 350-05222-0 | STARTER LOCK ROD |
| 45 | 345-05223-1 | ROD SNAP 3.5-2 |
| 46 | 350-63711-2 | ADVANCER ARM |
| 48 | 3KK-63104-0 | STUD |
| 49 | 345-63713-0 | BUSHING 8-14-4 |
| 50 | 930403-0800 | NYLON NUT 8-P1.25 |
| 51 | 334-66233-0 | WASHER 8.1-16-1.5 |
| 52 | 921503-0525 | SCREW |
| 54 | 398-63717-1 | ROD 5-65L |
| 56 | 346-05234-0 | ROD JOINT φ5 |
| 57 | 3B7-63733-0 | ROD SNAP 5-2.5 |
| 58 | 353-83728-1 | PIN |
| 59 | 3AA-83719-0 | WASHER 8.5-18-1.6 |
| 60 | 951603-0800 | SNAP PIN d=8 |
| 61 | 930103-0600 | NUT |
| 62 | 350-63715-1 | ROD 5-60L |
| 63 | 930103-0500 | NUT |
| 64 | 3B7-05243-0 | BALL JOINT CONNECTOR |
| 67 | 398-06972-0 | CLAMP 6.5-67P |
| 68 | 9701-1-1010 | SPARK PLUG (BP7HS10) |
| 69 | 3M3-01303-0 | ENGINE BASEMENT GASKET |
| 70 | 3KK-01012-0 | BOLT |
| 71 | 9401E3-0800 | WASHER |
| 72 | 3B7-76142-1 | GROUND CABLE L=120 |
| 73 | 910103-5612 | BOLT |
| 74 | 3P0-01143-0 | ANODE PLUG |
| 75 | 3T5-10046-0 | O-RING 1.9-13 |
| 76 | 921503-0530 | SCREW |
▶DRIVE SHAFT HOUSING (12 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 2 | 3LDQ61192-1 | DRIVE SHAFT HOUSING (L) |
| 3 | 345-01111-0 | DOWEL PIN 6-12 |
| 4 | 350-65204-0 | WATER PIPE AUXILIARY MOUNT |
| 5 | 398-61207-0 | IDLE EXHAUST PORT GROMMET |
| 7 | 3LD-02311-0 | EXHAUST PIPE |
| 8 | 362-02312-2 | EXHAUST PIPE GASKET |
| 9 | 910103-5625 | BOLT |
| 10 | 350Q61110-0 | EXTENSION HOUSING |
| 11 | 3BJ-60001-0 | BOLT 8-31 |
| 14 | 350-65120-0 | WATER PIPE (UL) |
| 15 | 350-65206-0 | WATER PIPE SEAL (UPPER) |
| 16 | 350-65205-0 | COLLAR |
▶FUEL TANK (17 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3B7-70200-5 | PRIMER BULB ASSY |
| 2 | 3C7-70220-1 | * JOINT ASSY (INLET) |
| 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 | 3B7-70280-1 | * FUEL CONNECTOR MARK |
| 9 | 3GF-70281-0 | * FUEL CONNECTOR |
| 10 | 3GF-70250-1 | * FUEL CONNECTOR |
| 11 | 332-70201-0 | * CLAMP |
| 12 | 3C7-70177-1 | FUEL TANK ASSY 25L |
| 13 | 3C7-70050-1 | * FUEL GAUGE VENT CAP ASSY (25L) |
| 14 | 3C7-70155-0 | * PICK-UP ELBOW ASSY (25L) |
| 15 | 3E0-70270-0 | * QUICK-CONNECTOR (MALE) |
| 16 | 3C7-70199-0 | * O-RING |
| 17 | 3C7-70113-0 | * FILTER |
▶GEAR CASE (59 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3LD-64325-0 | GIRD PIPE ASSY |
| 3 | 350-64326-1 | GROMMET 26.1-11.5 |
| 4 | 3V9Q60000-1 | GEAR CASE ASSY |
| 5 | 350-60211-0 | * ROLLER BEARING 16-24-20 |
| 6 | 332-60005-2 | PLUG 8-8 |
| 7 | 332-60006-0 | GASKET 8.1-15-1 |
| 9 | 398Q60100-2 | PROPELLER SHAFT HOUSING ASSY |
| 10 | 3BKQ60101-1 | * PROPELLER SHAFT HOUSING |
| 11 | 9601-0-6205 | * BALL BEARING 6205 |
| 12 | 362-60211-0 | * ROLLER BEARING 17-24-20 |
| 13 | 121-32071-0 | * O-RING 2.4-59.6 |
| 14 | 346-65013-0 | * OIL SEAL 17-30-9 |
| 15 | 3BJ-60108-0 | PRE-COATED BOLT |
| 17 | 910103-5620 | BOLT |
| 18 | 350-64010-0 | BEVEL GEAR ASSY (A) |
| 19 | 350-64020-0 | BEVEL GEAR B |
| 20 | 346-64027-1 | NUT |
| 21 | 362-64030-0 | BEVEL GEAR C |
| 22 | 350-64032-0 | WASHER 17.1-22-1.5 |
| 23 | 362-64211-3 | PROPELLER SHAFT |
| 24 | 362-64215-0 | CLUTCH |
| 25 | 350-64218-0 | PIN φ5-30 |
| 26 | 350-64219-0 | SNAP |
| 27 | 332-64221-0 | SPRING |
| 28 | 350-64222-1 | SPRING RETAINER |
| 29 | 350-64223-1 | PUSH ROD |
| 30 | 362-60206-1 | WATER STRAINER |
| 31 | 921503-0430 | SCREW |
| 32 | 930403-0400 | NYLON NUT 4-P0.7 |
| 33 | 369-60206-0 | WATER STRAINER |
| 34 | 921803-0620 | SCREW |
| 35 | 3LD-65021-0 | WATER PUMP IMPELLER |
| 36 | 350-65022-0 | KEY φ2-16 |
| 37 | 350-65016-1 | PUMP CASE (UPPER) |
| 38 | 350-65011-1 | PUMP CASE LINER |
| 39 | 350-65014-0 | WATER PIPE SEAL (LOWER) |
| 40 | 3BJ-65017-0 | PUMP CASE (LOWER) |
| 41 | 332-60223-0 | OIL SEAL 13.8-26-9.5 |
| 43 | 3FS-65029-0 | GUIDE PLATE GASKET |
| 44 | 350-65025-0 | WATER PUMP GUIDE PLATE |
| 45 | 9101E3-5652 | BOLT |
| 46 | 346-64084-0 | SHIM 35-41.9-0.5 |
| 47 | 350-64303-0 | DRIVE SHAFT (UL) |
| 48 | 9601-0-6302 | BALL BEARING 6302 |
| 49 | 398-66014-0 | CAM ROD (UL) |
| 50 | 3C8-66011-0 | CLUTCH CAM |
| 51 | 951407-0312 | SPRING PIN 3-12 |
| 52 | 398-66031-0 | CAM ROD BUSHING |
| 53 | 332-66021-0 | O-RING 2.4-5.8 |
| 54 | 336-62415-0 | O-RING 3.5-36 |
| 55 | 332-66033-0 | STOPPER |
| 56 | 910103-6512 | BOLT |
| 59 | 3BAB64524-1 | PROPELLER ASSY (11.5") |
| 60 | 3V9-87326-0 | PROPELLER HARDWARE KIT |
| 61 | 362-64231-0 | * THRUST HOLDER |
| 62 | 346-64124-5 | * WASHER 12.5-32-2.5 |
| 63 | 346-64121-5 | * PROPELLER NUT |
| 64 | 951503-0322 | * SPLIT PIN 3-22 |
| 67 | 3LD-60218-0 | ANODE |
▶INTAKE MANIFOLD (35 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3M2J02010-1 | INTAKE MANIFOLD ASSY |
| 2 | 338-01131-1 | * NIPPLE 4.8-5 |
| 3 | 350-02104-2 | INTAKE MANIFOLD GASKET |
| 4 | 350-02105-3 | INTAKE MANIFOLD GASKET |
| 5 | 3LD-02095-0 | BOLT |
| 6 | 3NT-02095-0 | BOLT 35mm |
| 7 | 3LD-63104-0 | STUD |
| 8 | 930103-0600 | NUT |
| 9 | 3MY-63104-0 | STUD |
| 11 | 3M2-03167-0 | THROTTLE LEVER ASSY |
| 12 | 3M2-03171-0 | * THROTTLE ROLLER |
| 13 | 350-03176-0 | THROTTLE LEVER END |
| 14 | 910903-0506 | BOLT |
| 15 | 350-03174-0 | ROD |
| 16 | 916103-0550 | BOLT |
| 17 | 940103-0500 | WASHER |
| 18 | 362-02100-1 | REED VALVE ASSY |
| 19 | 9215F1-0620 | SCREW |
| 20 | 916103-0680 | BOLT |
| 21 | 940103-0600 | WASHER |
| 22 | 3G2-67196-0 | ROD SNAP 3.4-1.6 |
| 23 | 3AD-02230-0 | FUEL FILTER ASSY |
| 24 | 3AD-02237-0 | * CUP |
| 25 | 3AD-02235-0 | * O-RING |
| 26 | 3AD-02234-0 | * FILTER |
| 27 | 930103-0800 | NUT |
| 28 | 334-66233-0 | WASHER 8.1-16-1.5 |
| 29 | 98AB-50-220 | HOSE |
| 30 | 338-02215-0 | CLIP φ10 |
| 31 | 3G2-02411-0 | INTAKE SILENCER |
| 32 | 345-67117-0 | * GROMMET 17-2.7 |
| 33 | 922553-0512 | SCREW |
| 34 | 3G2-67152-0 | CHOKE LEVER |
| 35 | 350-67154-0 | PLASTIC RIVET 6.5 |
| 36 | 3G2-02414-1 | INTAKE SILENCER GASKET |
▶MAGNETO・ELECTRIC PARTS (34 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 350-00121-0 | OIL SEAL 25-45-8 |
| 2 | 350-01401-0 | MAGNETO BASEMENT |
| 3 | 338-01403-0 | O-RING 2-55.5 |
| 4 | 910121-6620 | BOLT |
| 5 | 3M3-06001-1 | FLYWHEEL |
| 7 | 3LD-06102-0 | COIL PLATE ASSY |
| 10 | 3G3-06021-1 | * EXCITER COIL |
| 11 | 921521-6525 | * SCREW |
| 13 | 350-06025-0 | * HOLDER |
| 14 | 921521-6406 | SCREW |
| 16 | 334-00131-0 | KEY 19-7-5 |
| 17 | 931121-1600 | NUT |
| 18 | 334-00133-0 | WASHER 17-30-1.6 |
| 20 | 346-63722-2 | GUIDE PLATE |
| 21 | 350-63723-0 | SETTING RING |
| 22 | 346-05228-1 | BALL JOINT |
| 23 | 921503-0525 | SCREW |
| 24 | 930103-0500 | NUT |
| 25 | 921503-6510 | SCREW |
| 26 | 3PR-06972-0 | CLAMP 6.5-47.5P |
| 27 | 921503-5510 | SCREW |
| 28 | 3LD-63718-0 | THROTTLE CAM |
| 29 | 910103-5514 | BOLT |
| 30 | 336-76091-0 | LEAD WIRE BAND 100 |
| 32 | 3G2-06060-2 | CD UNIT |
| 33 | 3G2-06061-1 | CD UNIT BRACKET |
| 34 | 910103-6616 | BOLT |
| 35 | 3C8-66308-0 | WASHER 6-16-1.5 |
| 37 | 3LD-06050-1 | IGNITION COIL W/CAP |
| 38 | 3LD-06921-0 | * PLUG CAP |
| 39 | 3M2-06926-0 | * PLUG CAP TERMINAL |
| 40 | 3T5-84398-0 | * BAND 104 |
| 47 | 910103-7630 | BOLT |
| 49 | 940103-0600 | WASHER |
▶OPTIONAL PARTS・ACCESSORIES (2 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3C8-72100-1 | TOOL KIT |
| 13 | 336-60007-0 | FLUSHING PLUG |
▶PISTON・CRANK SHAFT (29 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 350-00115-0 | THRUST PLATE |
| 2 | 350-00107-0 | THRUST PLATE |
| 6 | 3LD-00046-0 | SMALL END BEARING WASHER |
| 7 | 3LD-00069-0 | CRANKSHAFT SUB-ASSY |
| 8 | 350-00040-0 | * CONNECTING ROD |
| 9 | 3G4-00043-0 | * ROLLER BEARING 20-26-16 |
| 10 | 3M2-00031-1 | * CRANKSHAFT A |
| 11 | 3LD-00032-0 | * CRANKSHAFT B |
| 12 | 350-00051-1 | * LABYRINTH PACKING |
| 13 | 951407-0308 | * SPRING PIN 3-8 |
| 14 | 3LD-00033-0 | * CRANKSHAFT C |
| 15 | 350-00034-2 | * CRANKSHAFT D |
| 16 | 350-00062-0 | * SEALING PLUG |
| 17 | 350-00061-1 | * CRANK PIN |
| 19 | 9603-3-6305 | BALL BEARING |
| 20 | 346-00116-0 | SPACER 25.2-34-1.6 |
| 21 | 945102-2500 | C-RING |
| 22 | 3LD-01291-0 | CRANKCASE HEAD |
| 23 | 3LD-00121-0 | OIL SEAL 25-47-6 |
| 24 | 350-01215-1 | OIL SEAL 12.8-25-7 |
| 25 | 338-01403-0 | O-RING 2-55.5 |
| 31 | 3LD-87124-1 | PISTON RING SET (0.5 O/S) |
| 32 | 3LD-00014-0 | * PISTON RING (0.5 O/S) |
| 33 | 350-00014-0 | * PISTON RING (0.5 O/S) |
| 42 | 3LD-87131-0 | PISTON REPAIR KIT (0.5 O/S) |
| 43 | 3LD-00004-0 | * PISTON (0.5 O/S) |
| 44 | 350-00021-1 | * PISTON PIN |
| 45 | 350-00024-1 | * PISTON PIN CLIP |
| 46 | 3LD-00090-0 | NEEDLE ROLLER SET |
▶RECOIL STARTER (36 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3LD-05000-0 | RECOIL STARTER ASSY |
| 2 | 350-05105-1 | * STARTER CASE |
| 3 | 350-05104-1 | * REEL ASSY |
| 4 | 345-05003-1 | * RATCHET |
| 5 | 345-05135-1 | * BUSHING 14.7-15.9-6 |
| 6 | 945303-0500 | * E-RING d=5 |
| 7 | 346-67115-0 | * WASHER 6.5-21-1 |
| 8 | 350-05123-0 | * RETURN SPRING |
| 9 | 350-05124-0 | * RETURN SPRING |
| 10 | 345-05004-1 | * STARTER SPRING |
| 11 | 951403-0316 | * SPRING PIN 3-16 |
| 12 | 350-05132-0 | * STARTER SHAFT |
| 13 | 9101F4-0635 | * BOLT |
| 14 | 930103-0600 | * NUT |
| 15 | 940121-0600 | * WASHER |
| 16 | 941322-0600 | * SPRING WASHER |
| 17 | 338-05019-0 | * STARTER HANDLE |
| 18 | 350-05013-1 | * STARTER ROPE φ5-1600 |
| 19 | 338-05131-0 | * ROPE ANCHOR |
| 20 | 350-05116-1 | * SEALING PLATE |
| 21a | 3LD-05912-0 | * SEAL |
| 22 | 3KM-67503-0 | STARTER SEAL |
| 23 | 3PR-06972-0 | CLAMP 6.5-47.5P |
| 24 | 3M3-02319-0 | BOLT 30mm |
| 25 | 940103-0600 | WASHER |
| 26 | 921503-5430 | SCREW |
| 27 | 338-05255-0 | COLLAR 4-6-21 |
| 28 | 338-05216-0 | STARTER LOCK SPRING |
| 29 | 338-05252-0 | STARTER LOCK |
| 30 | 350-05253-0 | STARTER LOCK CAM |
| 31 | 941403-0800 | WAVE WASHER d=8 |
| 32 | 921503-7616 | SCREW |
| 33 | 3M2-05215-0 | COLLAR 6.1-8-4 |
| 34 | 350-05217-0 | STARTER LOCK ROD |
| 35 | 345-05223-1 | ROD SNAP 3.5-2 |
| 36 | 3NV-72181-0 | CAUTION DECAL (B) |
▶SHIFT (19 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 350-66110-0 | SHIFT LEVER |
| 2 | 941403-1200 | WAVE WASHER d=12 |
| 3 | 3K9-66137-0 | OIL SEAL 14-20-4.5 |
| 4 | 350-66121-0 | SHIFT LEVER STOPPER |
| 6 | 940103-0600 | WASHER |
| 7 | 350-66115-0 | SHIFT LEVER STOP ADJUST |
| 8 | 951503-2522 | SPLIT PIN 2.5-22 |
| 9 | 350-66112-0 | SHIFT LEVER STOPPER |
| 10 | 910103-0616 | BOLT |
| 11 | 941303-0600 | SPRING WASHER |
| 12 | 350-67101-0 | BUSHING |
| 13 | 350-66215-0 | SHIFT ROD (L) |
| 14 | 350-66241-0 | SHIFT ROD JOINT |
| 15 | 951403-0312 | SPRING PIN 3-12 |
| 16 | 350-66225-0 | SHIFT ROD LEVER |
| 17 | 951503-2520 | SPLIT PIN 2.5-20 |
| 18 | 350-66223-0 | PIN |
| 19 | 951503-1610 | SPLIT PIN 1.6-10 |
| 20 | 3B7-67179-0 | DRAIN PLUG (ENGINE BASEMENT) |
▶TILLER HANDLE (20 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1 | 3NTQ63003-0 | TILLER HANDLE ASSY |
| 2 | 3NTQ63005-0 | TILLER HANDLE SUB-ASSY |
| 3 | 3NTQ63011-0 | ** TILLER HANDLE |
| 4 | 369-72019-1 | ** THROTTLE DECAL |
| 5 | 398-63053-0 | ** SPACER |
| 6 | 345-63048-0 | ** THROTTLE SHAFT DAMPER |
| 7 | 350-63046-0 | ** BUSHING 8.4-10-11 |
| 8 | 3NT-63046-0 | ** BUSHING |
| 9 | 398-63012-0 | ** GRIP |
| 10 | 921803-0525 | ** SCREW |
| 11 | 951403-0310 | ** SPRING PIN 3-10 |
| 12 | 3LD-63041-0 | ** THROTTLE SHAFT |
| 13 | 3V1-63035-1 | ** FRICTION PIECE |
| 14 | 3V1-63077-0 | ** ADJUSTING NUT |
| 15 | 3V1-63036-0 | ** SPRING |
| 16 | 910103-0625 | ** BOLT |
| 17 | 9101E3-5675 | ** BOLT |
| 18 | 930403-0600 | ** NYLON NUT 6-P1.0 |
| 19 | 346-63201-3 | * BOLT 9.7-11-12-8.5 |
| 20 | 3NT-63207-0 | * COLLAR |
▶TOP COWL (8 parts)
| Ref | OEM Part # | Part Name |
|---|---|---|
| 1a | 3NTH67645-0 | TOP COWL ASSY |
| 2a | 3NTH67640-0 | * TOP COWL SUB-ASSY |
| 4 | 930403-0600 | ** NYLON NUT 6-P1.0 |
| 5 | 3C8-66308-0 | ** WASHER 6-16-1.5 |
| 6 | 3NT-67501-0 | ** TOP COWL SEAL |
| 8 | 3C7-72180-3 | * CAUTION DECAL (A) |
| 11 | 3NTH67521-0 | ** TILT HANDLE |
| 12 | 3NT-87801-1 | * DECAL SET (MX15E2) |
100-Hour / Annual Service Checklist
Regular maintenance keeps your Tohatsu MX15/18E2 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
- Inspect and clean carburetor(s); check fuel mixture settings
- 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
- Decarbonize exhaust ports and piston crown if needed
- 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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