PROBLEM
Too much carbon debris in the damper and exhaust pipe.
The air filter is clogged.
The inlet pipe is leaking.
Worn piston, cylinder or piston ring.
Air leakage from the surfacing ace through which
the cylinder block contacts the cylinder head.
Poor compression
Too much or too little valve lash.
The valve tightness is poor.
CAUSE
Clean
Clean the air filter insert
Repair or replace
Replace
Replace the cylinder gasket
Adjust
Repair
SOLUTION
