Common Faults and Troubleshooting
Compression ratio is too
high.
There is too much 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.
Readjust the valve clearance.
The cylinder and piston are worn out.
Replace the damaged internal engine parts.
The cylinder compression
is too low.
The cylinder, piston, rings, valves, piston damaged.
Replace the cylinder, piston, piston rings, valves and
valve seats.
Excessive smoke from
muffler.
Oil is leaking past the piston rings
Replace the piston rings.
Oil is leaking past the valves seals
There is excessive wear on the piston or cylinder
wall.
Replace the piston or cylinder.
The valves need to be reseated.
Dress up the valve 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.