Yamaha 2B Manuel D'utilisation page 171

Trouble
E. Engine power loss
F. Engine vibrates
excessively
Possible Cause
13. Poor connections or damaged
ignition wiring
14. Failed ignition parts
15. Specified engine oil not used
16. Thermostat faulty or clogged
17. Air vent screw is closed
18. Fuel pump damaged
19. Fuel joint connection is wrong
20. Heat range of spark plug incorrect
1. Propeller damaged
2. Propeller shaft damaged
3. Weeds or other foreign matter
tangled on propeller
4. Motor mounting bolt is loosen
5. Steering pivot is loosen or damaged
13. Check wires for wear or breaks.
Tighten all loose connections.
Replace worn or broken wires.
14. Have Yamaha dealer service.
15. Check and replace it as specified.
16. Have Yamaha dealer service.
17. Open the air vent screw.
18. Have Yamaha dealer service.
19. Connect correctly.
20. Check the plug condition and
replace it with a correct one.
1. Have propeller repaired or replace.
2. Have Yamaha dealer service.
3. Remove and clean propeller.
4. Tighten the bolt.
5. Tighten or have Yamaha dealer
service.
5-4
GB
Remedy