TOHATSU MFS 25D Service Manual page 10

6) Inspection of the Brush ..................... 8-31
7) Starter Motor Operation Test ............... 8-32
7. The Charging System (Except for MF) ... 8-32
1) Inspection of the Charge Coil ............... 8-32
2) Inspection of the Rectifier .................. 8-32
8. ECU Coupler .................................... 8-33
9. Troubleshooting
1. Troubleshooting List ........................ 9-2
Power Unit .......................................... 9-3
State 1 Engine will not start or is
hard to start. ........................... 9-3
Starting System ................................. 9-3
Ignition System ................................. 9-5
Fuel System .................................... 9-7
State 2 Full throttle engine revolution
speed is low. Engine revolution
speed falls off. Engine stalls.
(Defective acceleration or
deceleration) ........................ 9-9
Ignition System ................................. 9-10
Fuel System .................................... 9-11
Lubrication System ........................... 9-12
Cooling System ................................. 9-13
State 3 Engine rotation is unstable or
hunting occurs in low
speed range. ........................... 9-14
Ignition System ................................. 9-15
Fuel System .................................... 9-16
PT Unit ................................................ 9-17
State 1 PT unit will not operate. ............ 9-17
State 2 PT unit is not capable of
sustaining the outboard motor. ... 9-18
Diagnosis .......................................... 9-19
10. Rigging
1. Service Information ........................ 10-2
2. Service Data .................................... 10-2
1) Boat Mounting Restriction .................. 10-2
2) Mounting Dimensions ........................ 10-2
3) Transom Dimensions ........................ 10-3
4) Lifting Up the Outboard Motor ............ 10-4
5) Installation of the Outboard Motor ......... 10-4
3. Fuel System .................................... 10-6
1) Fuel ............................................. 10-6
2) Engine Oil ....................................... 10-6
3) Installation of the Fuel Tank ............... 10-6
4. Connections to the Outboard Motor ... 10-7
1) Steering Cable ................................. 10-7
2) Drag Link ....................................... 10-8
5. Remote Control Components ......... 10-9
1) Installation of the Remote Control Cable
(Remote Controller Side) .................. 10-9
2) Installation of the Remote Control Cable
(Engine Side)
Remote Control Model ..................... 10-10
6. Lower Unit ....................................... 10-15
1) Installation of the Propeller .................. 10-15
7. Meters ............................................. 10-16
1) Installation of Meters ........................ 10-16
8. The Electrical System ..................... 10-17
1) Battery Capacity .............................. 10-17
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2) Installation of the Battery .................. 10-17
3) Wiring Diagram of the
Remote Controller and Meters ............ 10-18
9. Installation of the Trim Sensor ...... 10-20
11. Wiring Diagram
Wiring Chart .......................................... 11-2
MFS25/30D MF
(Basic Tiller Handle Type)
Electric Circuit .................................... 11-5
MFS25/30D EF/EFT
(Basic Tiller Handle Type)
Electric Circuit .................................... 11-6
MFS25/30D EH/EHT
(Multi-Function Tiller Handle Type)
Electric Circuit ....................................... 11-7
MFS25/30D EP/EPT
(Side Mount Remote Control Type/
Analog Meter) Electric Circuit ............... 11-8
MFS25/30D EP/EPT
(Top Mount Remote Control Type/
Analog Meter) Electric Circuit ............... 11-9
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