2-6 PERIODIC MAINTENANCE
• Remove the valve timing inspection plug
1 and generator
cover cap
2.
NOTE:
* The piston must be at top dead center (TDC) on the compres-
sion stroke in order to check or adjust the tappet clearance.
* The tappet clearance should only be checked when the engine
is cold.
• Rotate the crankshaft with a box wrench to set the piston at
TDC on the compression stroke. (Rotate the crankshaft until
the “T” line on the generator rotor is aligned with the triangle
mark on the generator cover.)
• Insert a thickness gauge between the tappet and the cam. If
the clearance is out of specification, adjust it to the specifica-
tion as follows.
$ 09900-20803: Thickness gauge
% Tappet clearance (when cold)
IN: 0.10 – 0.20 mm (0.0039 – 0.0079 in)
EX: 0.20 – 0.30 mm (0.0079– 0.0118 in)
NOTE:
The cam must be at position
A in order to check and adjust
valve clearance. Clearance readings should not be taken with
the cam in any other position than this position.
T
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