2. Electrical parts
problem
① Dirt on plug
② Gap of plug not correct
③ Ignition loop problem
④ CDI problem
⑤ Magneto problem
Clean or Change
Change or Adjust
Change
Change
Change
Engine power
is not enough
3.Mechanical
problem
① Gap of Valve is not correct
② The force of valve spring is
weak.
③ Air circulation is not right.
④ Cylinder worn out
⑤ Piston Ring worn out
⑥ Valve base not correct
⑦ Swing arm or cam shaft worn
out
Change operation method
Check, remove or change
Adjust
Change
Change
Change or repair
Change
1. Fuel system fault ① Octane number is lower
② Fuel pass blocked
③ Fuel pump problem
④ Fuel level in floater is lower
Use the right fuel
Clean the fuel pass
Change
Adjust the height of floater
Engine
overheats
2. Electric System
problem
① Ignition time is late or early
②Spark is weak or no spark
Adjust ignition time
Check from plug to magneto
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