Common Faults and Troubleshooting
Compression ratio is
too high.
There is carbon buildup in the combustion
chamber and on the top of the piston.
Clean the carbon buildup in the combustion
chamber and on the top of the piston.
Excessive noise
coming from engine.
The valves are not adjusted properly.
Re-adjust the valve clearance.
The cylinder and piston are worn out.
Replace the damaged internal engine parts.
The cylinder pressure is
too low.
The cylinder, rings, valves, piston could be
damaged.
Replace the cylinder, piston, piston rings.
Excessive smoke from
muffler.
The piston ring could be damaged.
Replace the piston rings.
Oil leaking past the valves.
There is wearing on the piston or cylinder
wall.
Replace the piston or cylinder.
The valves need to be re-seated.
Re-Dress the valves and valve seats.
The front wheel
vibrates.
The front shock absorber is damaged.
Replace the front shock absorber.
The front wheel is damaged.
The front wheel is improperly mounted.
The front wheel bearings are worn out or
damaged.
Replace the front wheel bearings.
The front wheel has
play in it.
The front wheel is damaged.
The front wheel nut is loose.
Tighten the front wheel nut to specs.
The tire pressure is too low.
Increase the tire pressure.
The front wheel bolt is loose.
Tighten the front wheel nut to specs.