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2-24 PERIODIC MAINTENANCE
Periodic Maintenance Procedures
•
Then, turn the crankshaft counterclockwise with a
wrench on the alternator rotor bolt until “T-R” mark [A] on
the alternator rotor aligns with the notch [B] as shown:
the end of the compression stroke in the rear cylinder
head.
•
Measure the clearance for all four valves, one at a time
between the end of the valve stem and the adjusting
screw with the thickness gauge.
Valve Clearance (when cold)
Exhaust: 0.20 ∼ 0.25 mm (0.0079 ∼ 0.0098 in.)
Inlet:
0.10 ∼ 0.15 mm (0.0039 ∼ 0.0059 in.)
If the valve clearance is not correct, adjust it (see Valve
Clearance Adjustment).
Valve Clearance Adjustment
•
Remove the valve adjusting caps.
•
Loosen the locknut and turn the adjusting screw until the
clearance is correct.
•
Hold the adjusting screw [A] from turning and tighten the
locknut [B].
Torque - Valve Adjusting Screw Locknuts: 12 N·m (1.2
kgf·m, 104 in·lb)
•
Recheck the clearance.
If the clearance i s incorrect, repeat the adjustment proce-
dure.
If the clearance is correct, perform the adjustment proce-
dure on the other valve.
Spark Arres ter Cleaning
WARNING
To avoid burns, wear gloves while cleaning the
spark arrester. Since the engine must be run dur-
ing this procedure, the muffler will become hot.
•
Remove the drain plug [A] on the muffler.
•
In an open area away from combustible materials, start
the engine with the transmission in neutral.
•
Raise and lower engine speed while tapping on the muf-
fler with a rubber mallet until carbon particles are purged
from the muffler.
WARNING
Do not run the engine in a closed area. Exhaust
gases contain carbon monoxide; a colorless, odor-
less, poisonous gas. Breathing exhaust gas leads
to carbon monoxide poisoning, asphyxiation, and
death.
•
Stop the engine.
•
Install the drain plug.