2-6
KX045A
2. Replace any one-way drain that is cracked or
shows any signs of hardening or deterioration.
3. Wipe any accumulation of oil or gas from the filter
housing and one-way drains.
Valve/Tappet
Clearance
(Feeler Gauge Procedure)
To check and adjust valve/tappet clearance, use the
following procedure.
NOTE: The engine must be cold for this proce-
dure.
NOTE: The seats, center console, spark plug,
and air filter housing must be removed for this pro-
cedure.
1. Remove the spark plug and timing inspection
plug; then remove the tappet covers (for more
detailed information, see Section 3 - Servicing
Top-Side Components).
2. Rotate the crankshaft to the TDC position on the
compression stroke.
NOTE: At this point, the rocker arms and adjuster
screws must not have pressure on them.
3. Using a feeler gauge, check each valve/tappet
clearance. If clearance is not within specifications,
loosen the jam nut and rotate the tappet adjuster
screw until the clearance is within specifications.
Tighten each jam nut securely after completing the
adjustment.
CC007D
4. Install the spark plug; then install the timing
inspection plug.
5. Place the two tappet covers with O-rings into posi-
tion. Tighten the cap screws securely.
Valve/Tappet Clearance
(Valve Adjuster Procedure)
To check and adjust valve/tappet clearance, use the
following procedure.
NOTE: The engine must be cold for this proce-
dure.
NOTE: The seats, center console, spark plug,
and air filter housing must be removed for this pro-
cedure.
1. Remove the spark plug and timing inspection
plug; then remove the tappet covers (for more
detailed information, see Section 3 - Servicing
Top-Side Components).
2. Rotate the crankshaft to the TDC position on the
compression stroke.
NOTE: At this point, the rocker arms and adjuster
screws must not have pressure on them.
NOTE: Use Valve Clearance Adjuster for this pro-
cedure.
! CAUTION
The one-way drain to the left is the clean air section
of the filter housing. Any leak of this drain will allow
dirt into the engine intake causing severe engine
damage.
! CAUTION
The feeler gauge must be positioned at the same
angle as the valve and valve adjuster for an accurate
measurement of clearance. Failure to measure the
valve clearance accurately could cause valve com-
ponent damage.
VALVE/TAPPET CLEARANCE
Intake
0.1016 mm (0.004 in.)
Exhaust
0.1524 mm (0.006 in.)
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