21-2
Troubleshooting
Engine Lacks Power
1. Raise wheels off ground Wheel don’t Brake dragging
and spin by hands. spin freely. Worn or damaged wheel bearings
Wheel bearings need lubrication
2. Check tire pressure. Pressure low. Punctured tire
Faulty tire valve
3. Check clutch slipping. Engine speed not Faulty clutch spring.
changed when Worn clutch disk/plate
Clutch is released Wraped clutch disk/plate
4. Accelerate lightly. Engine speed Carburetor choke closed
doesn’t increase. Clogged air cleaner
Clogged jets
Clogged fuel tank breather
Clogged muffler
5. Check ignition timing. Incorrect. Faulty CDI unit
Faulty pulse generator
Flywheel is not installed properly
6. Test cylinder compression. Too low. Worn cylinder and piston rings
Leaking head gasket
Improper valve timing
Faulty valve seat
7. Check valve clearance. Incorrect. Improper valve adjustment
Worn valve seat
8. Check carburetor for clogging Clogged. Clean
9. Check spark plug. Fouled Clean
or discolored. Spark plug of incorrect heat range
Wheels spin freely.Wheels spin freely.
Pressure normal.
Engine speed increased.
Correct.
Normal.
Correct.
Not clogged.
Not fouled or discolored.
Engine speed increased.
To Next Page
Loading...
Need help?
General
