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TROUBLESHOOTING
Fuel System Troubles
Possible causes of the engine failing to start or stopping during a ride
Include, but are not limited to:
- Fuel is not supplied to the carburetor:
Check the fuel tank level and the position of the fuel cock.
- Clogged fuel strainers:
Blow the strainers clean.
- Clogged carburetor main jet:
Remove and blow clean.
- Improper use of the choke lever:
Use the lever in accordance with the engine start instructions.
- Low engine idle speed setting:
Using the adjustment bolt (A, Fig. 6), increase the engine speed
Ignition System Troubles
Check the spark. Possible causes of the ignition spark plug failing to
produce a spark include:
- Wet spark or electrodes in a short circuit:
- Spark plug electrodes frequently in a short circuit:
Clean soot build-up from the cylinder head and piston head.
- Spark plug electrodes are worn out:
Adjust the electrode clearance according to the specifications, or
Replace the spark plug with a new one.
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- Spark plug cap improperly mounted or short-circuiting to the
- Ignition coil:
Troubles Causing Reduced Engine Power
- Inadequate spark plug or cylinder head tightness:
- Clogged air cleaner on the carburetor:
- Clogged exhaust system: clean.
Ground mass:
Properly mount the cap on the spark plug or replace with a new cap.
Have the trouble examined and remedied by an authorized service
agent.
Possible causes of reduced engine power and reduced vehicle road
performance include:
Tighten the spark plug or the cylinder head nuts.
Wash in gasoline, blow dry and oil lightly.
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