3-52
ENG
TROUBLESHOOTING
*
Measure valve clearance.
GOOD
OUT OF
SPECIFICA-
TION
Adjust.
Check valve face and valve
seat for wear.
GOOD
WEAR
Resurface or
replace.
Check if the timing marks
on the crankshaft and cam-
shaft are aligned.
GOOD
NO GOOD
Correct or replace.
Check if there is seizure or
wear on the piston, piston
ring, or cylinder.
GOOD
SEIZURE
OR WEAR
Rebore or replace.
Check the condition of the throttle control
system. Refer to “THROTTLE CONTROL
SYSTEM”.