Tohatsu M70CX (2013) Parts & Diagrams

OEM and aftermarket replacement parts for Tohatsu M70CX. Scroll down for exploded parts diagrams (22), specifications, and maintenance reference.

Tohatsu M70CX (2013) Parts & Diagrams

🔎 Tohatsu M70CX Reference Library — Exploded parts diagrams (22 diagrams), specifications, common issues, and maintenance checklist.

The Tohatsu M70CX is a 2-Stroke outboard motor. Suited for bay boats, pontoons, and center-console fishing boats requiring reliable mid-range power.

Quick Reference Specifications

Specification Value
Engine Type 2-Stroke
Horsepower 70 HP
Displacement 938
Bore x Stroke 74 x 72.7
Spark Plug (Type & Gap) NGK B8HS-10
Engine Oil Capacity
Recommended Engine Oil TC-W3 Certified 2-Stroke Oil
Gear Case Oil Capacity
Idle Speed (in gear)
Full Throttle RPM Range 5150-5850
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 M70CX:

  • 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 M70CX.

ACCESSORIES (20 parts) ACCESSORIES
Ref OEM Part # Part Name
1 3F5-72050-0 BUZZER CAUTION DECAL
2 3C8-72100-1 TOOL KIT
3 3B7-72201-0 SAFETY ROPEφ6-1600
4 3B7-72530-2 TACHOMETER ASSY
5 3B7-72659-0 * METER BULB 12V-1.8W
6 3B7-72656-0 * METER DAMPER
7 3B7-72661-0 * FITTING PLATE
8 930103-0500 * NUT
9 941303-0500 * SPRING WASHER
10 3B7-60007-0 FLUSHING PLUG
11 3A3-76114-0 EXTENSION CORD L=2000
12 3Z4-72573-0 EXTENSION CORD (TRIM SENSOR) L=2000
13 3F3-76180-0 PRESSURE SWITCH ASSY
14 346-67113-0 MOUNT 8.5-14-2.5
15 3B7-06920-0 RUBBER MOUNT 8.5-14-2.5
16 346-67114-1 SPACER 6.2-9-15.7
17 346-67115-0 WASHER 6.5-21-1
18 98AB-70-090 HOSE
19 338-02215-0 CLIPφ10
20 910103-6630 BOLT
ASSEMBLY・IT PARTS (7 parts) ASSEMBLY・IT PARTS
Ref OEM Part # Part Name
1 3N4Q87304-E LOWER UNIT ASSY (UL)
2 3PNJ87090-0 ENGINE SHORT BLOCK KIT
3 922503-6414 * SCREW
4 3F3-87121-9 POWER HEAD GASKET SET
5 3F3-65239-2 * WATER PUMP GUIDE PLATE
6 3N4-87321-2 LOWER UNIT GASKET SET
7 9402E3-0800 * WASHER
BOTTOM COWL (46 parts) BOTTOM COWL
Ref OEM Part # Part Name
1 3F3Q67100-1 BOTTOM COWL
2 345-67113-0 MOUNT 12-18-2.5
3 3C7-67114-1 SPACER 8.4-12-17
4 3F3-76116-0 GROMMET
5 3B7-77156-0 GROMMET
6 3F3-72618-0 GROMMET
7 3B2-63624-0 GROMMET
8 345-66226-0 GROMMET 17-3
9 3C8Q67141-0 HOOK LEVER
10 3C8-67146-0 WASHER 14-22-1
11 338-67147-0 SEAL RING 13.8-22-3.7
12 369-67105-0 HOOK LEVER BUSHING
13 941403-1400 WAVE WASHER d=14
14 3C8-67142-1 COVER HOOK
16 3C8-66308-0 WASHER 6-16-1.5
18 3BA-01138-0 NIPPLE
19 98AB-50-480 HOSE
20 338-02215-0 CLIPφ10
21 353-67512-0 COVER STAY (FRONT)
22 910103-6618 BOLT
24 309-06972-0 CLAMP 6.5-47.5P
25 3F3-66226-0 GROMMET
26 9101E3-0835 BOLT
27 3B7-63730-0 WASHER 8.5-24-1.5
28 3F3Q76118-0 CLAMP
29 910103-6625 BOLT
31 346-67151-1 CHOKE ROD
32 3F5-67104-0 SPACER
33 346-67104-0 CHOKE ROD BUSHING
34 346-63721-0 BUSHING 6.2-16-5
35 951503-0212 SPLIT PIN 2-12
36 3F5-67152-0 CHOKE LEVER
37 346-67196-1 ROD SNAP 3-B
38 3F5-67192-1 CHOKE ROD 3-67.5
39 346-67153-0 CHOKE LEVER BRACKET
41 941403-0600 WAVE WASHER d=6
42 930403-0600 NYLON NUT 6-P1.0
43 910103-0614 BOLT
44 930103-0600 NUT
46 940103-0600 WASHER
47 910103-0612 BOLT
48 360-72025-0 SPARK PLUG DECAL
49 353-72013-0 CLUTCH DECAL
50 353-83820-0 CLIP
51 941303-0600 SPRING WASHER
52 910103-0616 BOLT
BRACKET (54 parts) BRACKET
Ref OEM Part # Part Name
1 3E0-62191-1 SWIVEL BRACKET SHAFT ASSY
3 940103-0600 WASHER
4 346-62124-1 NYLON NUT 7/8-14
5 3E0-62126-0 BUSHING 25.6-28.6-40
6 346-62127-0 CAP NUT
7 3E0-62116-1 WASHER 25.7-50-1
8 3E0Q62313-3 SWIVEL BRACKET ASSY
9 9101E3-5612 * BOLT
10 344-67177-1 * GREASE FITTING
11 3C8-62396-1 GROUND L=210
12 3A3-62396-1 GROUND L=110
13 398-62396-1 GROUND L=130
15 910103-5612 BOLT
16 3F3Q62010-1 STEERING SHAFT ASSY
17 3B7-62417-0 BUSHING 32-40-45
18 3B7-62423-1 THRUST PLATE (UPPER)
19 945103-3200 C-RING d=32
20 3B7-62415-0 O-RING 4.5-32
21 3B7-62414-0 SEAL RING
22 3F3Q61411-2 MOUNT BRACKET
23 3B7-61301-0 RUBBER MOUNT (UPPER)
24 3B7-61307-2 BOLT 7/16-115
26 3B7-61335-0 WASHER 11.5-32-3
27 3B7-61341-1 MOUNT HOLDING PLATE (UPPER)
28 9101E3-5835 BOLT
29 3B7-61339-0 DAMPER (UPPER)
30 910103-0625 BOLT
31 3C8-66308-0 WASHER 6-16-1.5
32 353-61302-2 RUBBER MOUNT (LOWER)
33 353-61321-3 BOLT
35 3C7-61338-0 DAMPER 21-36-5
36 353-61315-1 WASHER 12.2-25-2
37 3B7-61324-0 NUT 12-P1.5
38 9402E3-1200 WASHER
39 3B7Q61342-0 MOUNT HOLDING PLATE (LOWER)
40 3N4-61343-0 BOLT 8-25
41 353-61336-0 DAMPER (LOWER)
42 9102E3-1020 BOLT
43 9402E3-1000 WASHER
44 3E0-62121-1 THRUST ROD
45 3B7-62129-1 PIN
46 3C7-60218-2 ANODE
47 910103-6630 BOLT
48 3Y9-62431-1 TILT STOPPER ASSY
49 951403-3516 * SPRING PIN 3.5-16
50 3T1-61315-0 * WASHER 10.5-18-2
51 3Y9-62433-0 * TILT STOPPER GRIP
52 353-63207-0 COLLAR 10.2-12-12
53 3E0-62473-1 TILT STOPPER SPRING
54 3C8-72120-0 RIGGING BOLT SET
55 3C7-62133-2 * BOLT 12-105 P1.25
56 353-61334-0 * WASHER13-34-3
57 940103-1200 * WASHER
58 3C7-62139-1 * NUT 12-P1.25
CARBURETOR (24 parts) CARBURETOR
Ref OEM Part # Part Name
1 3PN-03200-0 CARBURETOR ASSY
2 3PN-03207-0 CARBURETOR ASSY (SECOND)
3 3PN-03210-0 CARBURETOR ASSY (THIRD)
4 3F3-03221-0 * FLOAT CHAMBER
5 3F3-03222-0 * FLOAT CHAMBER O-RING
6 922503-6414 * SCREW
7 3F3-03231-0 * FLOAT
8 3F3-03232-0 * FLOAT ARM PIN
9 3B7-03240-0 * FLOAT VALVE
10 344-03244-0 * CLIP
11 3F3-03234-0 * SCREW
12 3J5-03252-0 * MAIN NOZZLE
13 3PN-04645-0 * MAIN JET (#145)
14 3J5-03255-0 * SLOW JET (#72)
15 346-03256-0 * RUBBER CAP
16 346-03266-0 * PILOT SCREW
17 353-03268-0 * SPRING
18 345-03292-0 * DRAIN SCREW
19 336-03293-0 * O-RING
20 334-03242-0 * VALVE PIN
21 3F3-03181-0 * CARBURETOR COVER
22 3F3-03182-0 * CARBURETOR COVER GASKET
23 346-03265-0 * STOP SCREW
24 346-03267-0 * SPRING
CYLINDER・CRANK CASE (60 parts) CYLINDER・CRANK CASE
Ref OEM Part # Part Name
1 3PNJ01100-1 CYL BLOCK & CRANKCASE ASSY
2 393-01137-0 * NIPPLE
3 345-01111-0 * DOWEL PIN 6-12
4 345-00117-0 * DOWEL PIN
5 393-01131-0 * NIPPLE 5.5-5
6 3F3-01114-0 * BOLT 10-60
7 916129-0845 * BOLT
8 3B7-01116-0 * WASHER 10.5-20-3.2
9 345-01015-0 * WASHER 8.5-19.5-3.2
10 338-60218-2 ANODE
12 3PNJ01091-0 CYLINDER HEAD
13 3F3-01024-2 CYLINDER HEAD COVER GASKET
14 3F3J01021-1 CYLINDER HEAD COVER
15 910103-7630 BOLT
16 353-66024-0 STOPPER
18 3C7-01030-0 THERMOSTAT
19 3B7J01031-0 THERMOSTAT CAP
20 353-01032-0 THERMOSTAT CAP GASKET
21 9101E3-5625 BOLT
22 9101E3-5640 BOLT
23 3B7-01046-0 PLUG
24 3F3-01005-1 CYLINDER HEAD GASKET
25 3N4-01012-0 CYLINDER HEAD BOLT
27 3F3J02300-2 EXHAUST COVER ASSY
28 3F3J02302-0 EXHAUST COVER (INNER)
29 3F3-02305-2 EXHAUST COVER GASKET
30 9161F9-0625 BOLT
31 9401E3-0600 WASHER
32 3C8-01513-1 HANGER
33 9161F9-0860 BOLT
34 3C8-01015-0 WASHER 8.5-19.5-3.2
35 930103-0800 NUT
36 9701-1-1009 SPARK PLUG (B8HS10)
37 98AL-40-350 HOSE
39 98AL-40-310 HOSE
40 98AL-40-030 HOSE
41 98AL-40-260 HOSE
42 98AL-40-050 HOSE
43 3LC-01160-0 CHECK VALVE
44 3T5-01133-0 CLIP φ8
45 338-01133-0 CLIP φ7
46 369-70098-2 CLIP φ7
47 3N4-01139-0 SEALING CAP
48 3C7-02215-0 CLIPφ12
49 309-06972-0 CLAMP 6.5-47.5P
50 910103-0612 BOLT
51 3F5-05100-2 BRACKET
52 9101F4-0630 BOLT
55 3F5-05102-1 BRACKET
56 9101F4-0645 BOLT
57 941303-0600 SPRING WASHER
58 940103-0600 WASHER
59 3P0-06915-0 CLAMP 6.5-11L
60 910103-5612 BOLT
61 3F3-01303-4 ENGINE BASEMENT GASKET
62 3F3B01291-0 CRANKCASE HEAD
63 151-00053-0 O-RING 2-66.5
64 126-00121-0 OIL SEAL 30-45-8
65 3F3-01215-0 OIL SEAL 16.8-28-8
66 910103-5620 BOLT
DRIVE SHAFT HOUSING (26 parts) DRIVE SHAFT HOUSING
Ref OEM Part # Part Name
1 3F3Q01301-0 ENGINE BASEMENT
2 3F3-67116-0 ENGINE BASEMENT SEAL L=870
3 910103-5630 BOLT
4 345-01111-0 DOWEL PIN 6-12
5 3F3-02311-0 EXHAUST PIPE
6 910103-6835 BOLT
7 940103-0800 WASHER
8 3F3-02312-2 EXHAUST PIPE GASKET
9 3F3Q61192-0 DRIVE SHAFT HOUSING (L)
10 3A3-61017-3 BOLT 8-100
12 3F3-61012-2 DRIVE SHAFT HOUSING GASKET
13 3B7Q61110-0 EXTENSION HOUSING
14 3T1-60001-1 BOLT 8-35
15 9402E3-0800 WASHER
16 3B7-60001-5 BOLT 10-40
17 9401E3-1000 WASHER
18 3F3-61180-0 EXHAUST HOUSING
19 3F3-61182-0 GROMMET
20 910103-5835 BOLT
21 3F3-61181-2 EXHAUST HOUSING GASKET
22 3F3Q61210-0 APRON
23 3C7-61216-0 PAD
24 3F3-61212-0 GROMMET
25 3F3-61213-0 SEAL
26 9215E3-5545 SCREW
27 930403-0500 NYLON NUT 5-P0.8
ELECTRIC PARTS (C.D. UNIT) (18 parts) ELECTRIC PARTS (C.D. UNIT)
Ref OEM Part # Part Name
1 3PN-06048-0 IGNITION COIL ASSY W/LABEL
2 3PN-06050-0 IGNITION COIL W/CAP
3 3M2-06921-0 * PLUG CAP
4 3M2-06926-0 * PLUG CAP TERMINAL
5 3T5-84398-0 * BAND104
6 3C8-72181-0 * CAUTION DECAL (B)
7 910103-5620 BOLT
8 151-33159-0 GASKET 6.2-11-1
9 3C8-62396-1 GROUND L=210
10 3N4-06160-1 CD UNIT
11 3F5-05205-1 BRACKET
12 910103-7630 BOLT
13 3F5-67216-0 DAMPER
14 353-72544-1 FUEL COCK ROD HOSE
15 3C8-66116-0 SHIFT LEVER STOPPER
16 910103-5612 BOLT
18 336-76091-0 LEAD WIRE BAND 100
19 3N4-76172-1 OVERHEAT SENSOR ASSY
FUEL LINE (27 parts) FUEL LINE
Ref OEM Part # Part Name
1 3AD-02230-0 FUEL FILTER ASSY
2 3AD-02237-0 * CUP
3 3AD-02235-0 * O-RING
4 3AD-02234-0 * FILTER
5 356-04000-1 FUEL PUMP ASSY
6 334-04004-0 * PUMP COVER
7 9225F2-6528 * SCREW
8 334-04005-0 * PUMP DIAPHRAGM
9 334-04007-0 * DIAPHRAGM GASKET
10 356-04044-0 * CHECK VALVE
11 921722-0306 * SCREW
12 930222-0300 * NUT
13 356-04030-0 * DIAPHRAGM GASKET SET
14 930103-0800 NUT
15 940103-0800 WASHER
16 98AB-50-280 HOSE
18 98AB-50-035 HOSE
19 98AB-50-040 HOSE
20 98AB-50-095 HOSE
21 98AB-50-120 HOSE
22 394-70013-0 PIPE JOINT 4-4
23 338-02215-0 CLIPφ10
24 346-04901-2 GASKET
25 921503-6640 SCREW
26 3B2-70260-1 FUEL CONNECTOR (MALE)
27 931103-1000 NUT
28 336-70112-0 GASKET 10.2-16-0.5
FUEL TANK (17 parts) FUEL TANK
Ref OEM Part # Part Name
1 3B7-70200-4 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-70250-0 * FUEL CONNECTOR
11 332-70201-0 * CLAMP
12 3C7-70177-1 FUEL TANK ASSY 25L
13 3C7-70155-0 * PICK-UP ELBOW ASSY (25L)
14 3C7-70199-0 * O-RING
15 3C7-70113-0 * FILTER
16 3C7-70050-1 * FUEL GAUGE VENT CAP ASSY (25L)
17 3E0-70270-0 * QUICK-CONNECTOR (MALE)
GAS SHOCK ABSORBER (17 parts) GAS SHOCK ABSORBER
Ref OEM Part # Part Name
1 3N4Q62112-0 CLAMP BRACKET (R)
2 3N4Q62113-0 CLAMP BRACKET (L)
3 3N4Q77601-0 GAS SHOCK ABSORBER
4 3C8-77071-1 CYLINDER PIN (UPPER)
5 345-05122-1 WASHER 6.5-23-1.5
6 9101E3-0612 BOLT
7 3N4-77075-0 BUSHING 18-24-17
8 3C8-77111-1 WASHER 19-34-3
9 3E0-77076-0 BUSHING 18-20-20.5
10 3E0-77101-1 CYLINDER PIN (LOWER)
11 346-62412-1 WASHER 22.6-30-2
12 945103-2200 C-RING d=22
13 3E0-77103-0 BUSHING 22-25.4-23.5
14 3N4-66311-0 REVERSE LOCK LEVER
15 3V2-60001-0 BOLT 6-35
16 9401E3-0600 WASHER
17 930103-0600 NUT
GEAR CASE (DRIVE SHAFT) (65 parts) GEAR CASE (DRIVE SHAFT)
Ref OEM Part # Part Name
1 3N4Q60000-0 GEAR CASE ASSY
2 3N4-60092-0 * SUB-WATER INLET PIPE
4 3B7-60102-0 * ROLLER BEARING 25.4-33.3-31.8
5 332-60005-2 PLUG 8-8
6 332-60006-0 GASKET 8.1-15-1
7 3B7-60217-1 TRIM TAB
8 915303-0825 STUD
9 930403-0800 NYLON NUT 8-P1.25
10 3B7-60219-0 TRIM TAB GASKET
11 3N4-60012-0 GEAR CASE PLATE
12 9216E3-0614 SCREW
13 3B7-60013-0 GEAR CASE PLATE PLUG
14 3N4-60241-0 SUB-WATER INLET CASE
15 3N4-60017-0 NIPPLE
16 9215E3-0510 SCREW
17 3N4-60243-0 WATER STRAINER GASKET 26-36-0.5
18 369-60206-0 WATER STRAINER
19 9218E3-0620 SCREW
20 98AB-90-040 HOSE
21 3B7-60015-1 PLUG
22 3B7-60016-1 GASKET 10.1-15-1
23 3J5-64020-0 BEVEL GEAR B
24 353-64016-0 SHIM 52-60.5-0.1
25 3B7-64027-0 NUT
26 3J5-64303-1 DRIVE SHAFT (UL)
27 3B7-60213-0 TAPERED ROLLER BEARING 32305
28 353-64327-0 DRIVE SHAFT SPRING
29 3B7-65021-2 WATER PUMP IMPELLER
30 3B7-65022-1 KEY
31 3B7-65016-0 PUMP CASE SUB-ASSY (UPPER)
32 3B7-65238-0 PUMP CASE LINER
33 3B7-65014-0 WATER PIPE SEAL (LOWER)
34 3B7-65018-0 PUMP CASE GASKET
35 3J5-65017-1 PUMP CASE (LOWER)
36 3C7-60223-1 OIL SEAL 22-42-7
37 346-64084-0 SHIM 35-41.9-0.5
38 3B7-65015-0 O-RING 3.1-54.4
39 334-65012-0 DOWEL PIN 4-10
40 9161E3-0880 BOLT
41 940103-0800 WASHER
42 3F3-65239-2 WATER PUMP GUIDE PLATE
43 3B7-65029-0 GUIDE PLATE GASKET
44 3B7-64328-0 DRIVE SHAFT SPRING GUIDE
45 3B7-66011-1 CLUTCH CAM
46 3B7-66014-1 CAM ROD (UL)
47 951403-3510 SPRING PIN 3.5-10
48 3B7-66031-1 CAM ROD BUSHING
49 345-66021-0 O-RING 1.9-6.8
50 3B7-66023-0 O-RING 3.5-27.7
51 353-66241-1 SHIFT ROD JOINT
53 353-66024-0 STOPPER
54 910103-6612 BOLT
55 3T1-60001-1 BOLT 8-35
56 3B7-60001-5 BOLT 10-40
57 9402E3-0800 WASHER
58 9402E3-1000 WASHER
59 3B7-60027-0 PLUG 6-1/8
60 346-65204-0 WATER PIPE AUXILIARY MOUNT
61 951403-3516 SPRING PIN 3.5-16
62 3F3-65120-0 WATER PIPE (UL)
63 345-65206-0 WATER PIPE SEAL (UPPER)
64 345-65205-0 COLLAR 18-20-4.5
65 3C7-60205-1 WATER STRAINER SET
66 921503-0445 * SCREW
67 930403-0400 * NYLON NUT 4-P0.7
GEAR CASE (PROPELLER SHAFT) (28 parts) GEAR CASE (PROPELLER SHAFT)
Ref OEM Part # Part Name
1 3C7-60215-0 TAPERED ROLLER BEARING 30209
2 3B7Q87323-1 PROPELLER SHAFT HOUSING ASSY
3 3B7Q60101-1 * PROPELLER SHAFT HOUSING
4 3B7-60211-0 * ROLLER BEARING 30-40-30
5 3B7-60111-0 * OIL SEAL 30-50-12
6 9601-0-6208 * BALL BEARING 6208
7 3B7-60103-0 * O-RING 3.1-94.4
8 3C7-60108-2 PRE-COATED BOLT 8-30
9 3J5-64010-0 BEVEL GEAR ASSY (A)
10 3B7-64011-0 * ROLLER BEARING 25-32-26
11 3Y7-64093-0 BEVEL GEAR C
12 3B7-64035-0 WASHER t=2.8
13 3B7-64016-0 SHIM 47-57-0.1
14 3B7-64037-0 SHIM 42-50-0.1
15 3B7-64211-0 PROPELLER SHAFT
16 3T1-64215-2 CLUTCH
17 3B7-64218-0 PIN
18 3B7-64219-1 SNAP
19 346-64221-0 SPRING
20 3T1-64223-0 PUSH ROD
21 3T1-64222-0 SPRING RETAINER L=30.5
22 3T1-64224-0 BALL
23 353-64121-0 PROPELLER NUT
24 345-64124-0 WASHER 17-32-3
25 951503-0325 SPLIT PIN 3-25
26 3HKB64545-0 PROPELLER ASSY (21")
27 3HK-64238-0 * PROPELLER HUB KIT
28 3HK-64235-0 ** FORWARD THRUST WASHER
INTAKE MANIFOLD・REED VALVE・INTAKE SILENCER (24 parts) INTAKE MANIFOLD・REED VALVE・INTAKE SILENCER
Ref OEM Part # Part Name
1 3F3J02020-1 INTAKE MANIFOLD ASSY
2 3F3-02104-2 INTAKE MANIFOLD GASKET
3 98AB-50-087 HOSE
4 338-02215-0 CLIPφ10
5 3F3-02100-0 REED VALVE ASSY
6 921521-6516 SCREW
7 3F5-05101-1 BRACKET
8 910299-0630 BOLT
9 3F3-02411-1 INTAKE SILENCER
10 3C8-02417-0 INTAKE SILENCER LOCK PLATE
11 3C8-02420-0 BOLT 5-16
12 3F3-02415-0 INTAKE SILENCER COVER
13 3F3-02418-0 GASKET
14 3F3-02423-0 TAPPING SCREW 5-30
15 3F3-72015-0 CHOKE DECAL
16 3F3-63709-1 THROTTLE ROD 5-77
17 3B7-05229-0 BALL JOINT CONNECTOR
18 3B7-05243-0 BALL JOINT CONNECTOR
19 930103-0500 NUT
20 3F3-02012-0 O-RING 1.9-38.8
21 3F5-67191-1 CHOKE ROD
22 346-67196-1 ROD SNAP 3-B
23 9161F1-0695 BOLT
24 940121-0600 WASHER
MAGNETO (24 parts) MAGNETO
Ref OEM Part # Part Name
1 3N5-06189-0 FLYWHEEL W/RING
2 3N4-06103-1 COIL PLATE ASSY W/ALTERNATOR
3 3N4-06130-0 * PULSAR COIL & PLATE ASSY
4 3B7-06131-0 * PULSAR HOLDER
5 3N4-06120-0 * EXCITER COIL
6 921521-6630 * SCREW
7 3N4-06123-0 * ALTERNATOR ASSY
8 3B7-06135-0 * HOLDER
9 921521-0406 * SCREW
10 3B7-06132-0 * CLAMP
11 921521-6406 * SCREW
12 3B7-06133-0 * BAND
13 334-00131-0 KEY
14 353-00132-0 NUT 18-P1.5
15 353-00133-0 WASHER 19-34-3
16 3A3-76037-0 CABLE TERMINAL PLUG
17 3F3-63723-1 SETTING RING
18 3B7-05244-0 BALL JOINT
19 941303-0600 SPRING WASHER
20 951703-0500 SNAP RETAINER d=5
21 3C8-63722-0 GUIDE PLATE
22 3C8-63725-0 GUIDE PLATE COVER
23 910121-6616 BOLT
24 921503-6510 SCREW
OPTIONAL PARTS (1) (32 parts) OPTIONAL PARTS (1)
Ref OEM Part # Part Name
1 3E0-72649-0 SPEEDOMETER ASSY (75MPH)
2 3B7-72659-0 * METER BULB 12V-1.8W
3 3B7-72656-0 * METER DAMPER
4 3B7-72661-0 * FITTING PLATE
7 3B7-72650-0 * SPEEDOMETER TUBE L=6000
8 3B7-72651-0 * SPEEDOMETER BAND
9 3E0-72526-0 WATER TEMPERATURE METER KIT
10 3E0-72597-0 * WATER TEMPERATURE METER ASSY
16 3B7-72514-0 * WATER TEMPERATURE SENSOR
17 3B7-72518-0 * LEAD WIRE L=7700
18 3E0-72529-0 VOLTMETER ASSY
21 3B7-72662-0 * FITTING PLATE
24 3E0-72527-0 WATER PRESSURE METER KIT
25 3E0-72598-0 * WATER PRESSURE METER ASSY
28 3B7-72663-0 ** FITTING PLATE
29 930203-0500 ** NUT
30 941303-0500 ** SPRING WASHER
31 3B7-72641-0 * WATER PRESSURE METER NIPPLE
32 98AB-506000 * HOSE
33 338-02215-0 * CLIPφ10
34 345-67193-0 * GROMMET 16-2.5
35 394-70013-0 * PIPE JOINT 4-4
36 121-33159-0 * GASKET 2-8-1
37 3E0-72524-0 HOUR METER ASSY
38 3B7-72657-0 * METER BULB 12V-1.7W
39 3B7-72655-0 * METER DAMPER
40 3B7-72664-0 * FITTING PLATE
41 930203-0400 * NUT
42 941303-0400 * SPRING WASHER
43 353-72521-1 METER LAMP SWITCH
44 353-72548-0 ASSIST CORD (BLK) L=200
45 361-72539-0 TACHOMETER LEAD WIRE L=6000
PISTON・CRANK SHAFT (17 parts) PISTON・CRANK SHAFT
Ref OEM Part # Part Name
1 3PN-00069-0 CRANKSHAFT SUB-ASSY
2 353-00115-0 * THRUST PLATE 59-78-2
3 353-00118-0 * MAIN BEARING 6306
4 3F3-00115-0 * THRUST PLATE 49-78-2
5 3PN-00119-0 *SPACER
6 945107-3000 * C-RING d=30
7 3F3-00042-1 ROLLER BEARING 20-25-24
8 353-00113-0 MAIN BEARING
9 353-00121-0 * OIL SEAL 36.5-46-8
10 353-00108-0 O-RING 2.4-44.7
11 3N5-87124-0 PISTON RING SET (0.5 O/S)
12 3F3-00014-2 * PISTON RING (0.5 O/S)
13 3F3-00015-1 * PISTON RING (0.5 O/S)
14 3N5-87131-0 PISTON REPAIR KIT (0.5 O/S)
15 3F3-00004-0 * PISTON (0.5 O/S)
16 3F3-00021-1 * PISTON PIN
17 353-00024-1 * PISTON PIN CLIP
RECOIL STARTER (40 parts) RECOIL STARTER
Ref OEM Part # Part Name
1 3F5-05090-1 RECOIL STARTER ASSY
2 3C8-05090-2 * RECOIL STARTER ASSY
3 3C8-05106-0 ** REEL ASSY
4 3C8-05003-0 ** RATCHET
5 3C8-05004-0 ** STARTER SPRING
6 3C8-05007-0 ** FRICTION SPRING
7 3C8-05012-0 ** RETURN SPRING
8 3C8-05006-0 ** FRICTION PLATE
9 3C8-05107-0 ** BUSHING
10 3C8-05108-0 ** WASHER
11 3C8-05023-0 ** SLIDING PLATE
12 3C8-05029-0 ** SLIDING PLATE
13 945127-2800 ** C-RING
14 3C8-05138-0 ** BOLT
15 3C8-05013-0 ** STARTER ROPEφ6-2250
16 3C8-05019-0 ** STARTER HANDLE
17 3R3-05131-0 ** ROPE ANCHOR
18 3C8-05014-1 ** ROPE GUIDE
19 3C8-05252-0 ** STARTER LOCK
20 3C8-05253-0 ** STARTER LOCK CAM
21 3C8-05237-0 ** WASHER
22 3C8-05216-0 ** STARTER LOCK SPRING
23 951503-1520 ** SPLIT PIN
24 3C8-05217-0 ** STARTER LOCK WIRE
25 3C8-05257-0 ** CABLE HOLDER
26 922432-0510 ** SCREW
27 3C8-05238-0 ** PIPE
28 3C8-05030-0 ** STARTER ROLLER
29 3C8-05031-0 ** BOLT
30 3C8-05032-0 ** WASHER
31 3C8-05033-0 ** COLLAR
32 3F5-05119-0 * BRACKET
33 910103-6616 * BOLT
35 930103-0600 * NUT
36 3C8-05901-1 STARTER PULLEY
37 3C8-67503-0 STARTER SEAL
38 9101F4-0818 BOLT
39 940103-0800 WASHER
40 9101F4-0625 BOLT
41 940103-0600 WASHER
SHIFT (47 parts) SHIFT
Ref OEM Part # Part Name
1 3T9-66110-0 SHIFT ROD LEVER
2 930403-1000 NYLON NUT 10-P1.5
3 3B7-66225-0 SHIFT LEVER SHAFT
4 353-66145-1 HOLDER
5 3T1-60108-0 PRE-COATED BOLT 8-25
6 332-61315-0 WASHER 10.5-18-1.5
7 353-83728-1 PIN
9 353-66215-1 SHIFT ROD (L)
10 3B7Q80403-0 SHIFT LEVER COMPLETE
11 3B7Q66110-0 * SHIFT LEVER
12 3B7Q66115-0 * SHIFT LEVER STOP BRACKET
13 3B2-66113-0 * SHIFT LEVER STOPPER
14 910103-0616 * BOLT
17 3B7-66121-0 * SHIFT LEVER STOPPER
18 910103-0420 * BOLT
19 940103-0400 * WASHER
20 941303-0400 * SPRING WASHER
21 3B7-66124-0 * COLLAR 8.1-10.5-31.7
22 346-62437-0 * BUSHING 10.2-12-29.5
23 910103-0855 * BOLT
26 910103-5620 BOLT
27 3F3-66134-0 SHIFT LEVER ROD
28 940103-0500 WASHER
29 951503-0212 SPLIT PIN 2-12
31 3B7-83715-2 CABLE JOINT
34 3AA-83719-0 WASHER 8.5-18-1.6
35 3F3-05222-0 STARTER LOCK ROD 5-70
36 3B2-83865-0 NUT 10-32UNF
37 3A3-83715-0 CABLE JOINT
38 951603-0800 SNAP PIN d=8
39 3F5-66122-0 SHIFT ARM
40 3F5-83728-0 PIN
41 930103-0600 NUT
42 941303-0600 SPRING WASHER
43 910103-0835 BOLT
44 940103-0800 WASHER
45 345-05212-0 BUSHING 10-10.9-11
46 348-05232-0 COLLAR 8-10-13
47 941303-0800 SPRING WASHER
48 3C8-05211-0 STARTER LOCK ARM
52 3F5-05222-0 STARTER LOCK ROD 3.5-51
54 3C8-05213-0 THROTTLE LIMITER ARM
55 9101F4-0625 BOLT
56 940103-0600 WASHER
57 353-76079-0 COLLAR 6.2-9-9.3
58 3F5-05221-0 THROTTLE LIMITER ROD 3.5-63.5
59 3C8-05223-0 ROD SNAP 3.5-4
THROTTLE (28 parts) THROTTLE
Ref OEM Part # Part Name
1 3F3-63718-0 THROTTLE CAM
2 3B7-63721-0 COLLAR 8.4-12-26.3
3 346-05228-1 BALL JOINT
4 941303-0600 SPRING WASHER
5 3N4-63727-0 SPRING
6 3B7-63712-0 ADVANCER LEVER
8 3C8-63715-1 ROD 5-118
11 3F3-63715-2 ROD 5-136
12 3B7-05243-0 BALL JOINT CONNECTOR
13 930103-0500 NUT
14 3F3B63711-0 ADVANCER ARM
15 910103-6835 BOLT
16 3B7-63730-0 WASHER 8.5-24-1.5
17 3B7-63713-0 BUSHING 12-14-15.5
18 3B7-63731-0 WASHER 12.5-24-1
19 3B7-63732-1 COLLAR 8.4-12-17
20 910103-0635 BOLT
22 3C8-63733-0 ROD SNAP 5-3
23 910103-0845 BOLT
24 940103-0800 WASHER
25 941303-0800 SPRING WASHER
26 3B7-83715-2 CABLE JOINT
27 3AA-83719-0 WASHER 8.5-18-1.6
28 951603-0800 SNAP PIN d=8
29 910103-0630 BOLT
30 940103-0600 WASHER
31 930103-0600 NUT
32 3B7-63734-0 STOPPER DAMPER
TILLER HANDLE (33 parts) TILLER HANDLE
Ref OEM Part # Part Name
1 3N5Q63005-2 TILLER HANDLE SUB-ASSY
2 3F5Q63011-1 * TILLER HANDLE
3 353-63029-0 * SCREW
4 350-63012-2 * GRIP
5 920803-0520 * SCREW
6 3B7-63041-0 * THROTTLE SHAFT
7 345-63048-0 * THROTTLE SHAFT DAMPER
8 350-63046-0 * BUSHING 8.4-10-11
9 3B2-63035-1 * FRICTION PIECE
10 910103-5620 * BOLT
11 930103-0600 * NUT
12 369-72019-1 * THROTTLE DECAL
13 3B7-63068-0 * LEVER
14 930403-0400 * NYLON NUT 4-P0.7
15 951403-0316 * SPRING PIN 3-16
16 3B7-63604-0 * THROTTLE CABLE HOLDER
17 9101E3-5512 * BOLT
18 3B7-63203-1 * BOLT 8-105
19 9401E3-0800 * WASHER
20 930403-0800 * NYLON NUT 8-P1.25
21 353-63201-2 BOLT
22 353-63207-0 COLLAR 10.2-12-12
23 3F3-63600-1 THROTTLE WIRE
24 3B7Q63051-1 STEERING BRACKET
25 9161F4-0845 BOLT
26 941303-0800 SPRING WASHER
27 3C8-06820-0 STOP SWITCH ASSY
28 353-06821-0 * STOP SWITCH LANYARD ASSY
29 336-06973-0 CLAMP 6-9.5L
30 9215E3-0610 SCREW
31 3A3-76037-0 CABLE TERMINAL PLUG
32 3F5-06982-0 STOP SWITCH ASSIST CORD
33 336-76091-0 LEAD WIRE BAND 100
TOP COWL (20 parts) TOP COWL
Ref OEM Part # Part Name
1 3PNQ67500-0 TOP COWL ASSY
2 3N4Q67640-2 * TOP COWL SUB-ASSY
3 3F3-67501-0 ** TOP COWL SEAL L=1700
4 353-67517-1 **LOCATING BRACKET
5 921703-5520 **SCREW
6 930103-0500 **NUT
7 941303-0500 **SPRING WASHER
8 353Q67141-0 ** HOOK LEVER
9 353-67147-1 ** SEAL RING
10 353-67105-0 ** HOOK LEVER BUSHING 12-14-12
11 338-62435-0 ** O-RING 1.5-9.5
12 353-67142-1 ** COVER HOOK
13 910103-0616 ** BOLT
14 3C8-66308-0 ** WASHER 6-16-1.5
15 941303-0600 ** SPRING WASHER
16 3F3Q67521-2 ** TILT HANDLE
17 910103-0630 ** BOLT
18 3N4-87802-1 * DECAL SET
19 3C7-72180-3 * CAUTION DECAL (A)
20 3PN-67559-0 * CX PRO DECAL

100-Hour / Annual Service Checklist

Regular maintenance keeps your Tohatsu M70CX 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. Inspect and clean carburetor(s); check fuel mixture settings
  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. Decarbonize exhaust ports and piston crown if needed
  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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