8
GZ063
NOTE: At this point, the rocker arms and adjuster
screws must not have pressure on them.
Feeler Gauge Procedure
A. Using a feeler gauge, check each valve/tappet
clearance. If clearance is not within specifica-
tions, loosen the jam nut and rotate the tappet
adjuster screw until the clearance is within speci-
fications. Tighten each jam nut securely after
completing the adjustment.
CC007DC
B. Rotate the engine 270° to the TDC position of the
rear cylinder; then repeat step A.
GZ059
Valve Adjuster Procedure
NOTE: The
seat,
storage
compartment
cover
assembly, compartment box, air filter/filter housing,
and
left-side/right-side
splash
panels
must
be
removed for this procedure.
A. Place Valve Clearance Adjuster onto the jam nut
securing the tappet adjuster screw; then rotate the
valve adjuster dial clockwise until the end is
seated in the tappet adjuster screw.
B. While holding the valve adjuster dial in place, use
the valve adjuster handle and loosen the jam nut;
then rotate the tappet adjuster screw clockwise
until friction is felt.
C. Align the valve adjuster handle with one of the
marks on the valve adjuster dial.
D. While holding the valve adjuster handle in place,
rotate the valve adjuster dial counterclockwise
until proper valve/tappet clearance is attained.
NOTE: Refer to the appropriate specifications in
Feeler Gauge Procedure sub-section for the proper
valve/tappet clearance.
NOTE: Rotating the valve adjuster dial counter-
clockwise will open the valve/tappet clearance by
0.05 mm (0.002 in.) per mark.
E. While holding the adjuster dial at the proper
clearance setting, tighten the jam nut securely
with the valve adjuster handle.
F. Rotate the engine 270° to the TDC position of the
rear cylinder; then repeat steps A-E for the rear
cylinder.
3. Install the timing inspection plug; then remove the
cap screw and install the crankcase end cap.
4. Place the tappet covers into position making sure the
proper cap screws are with the proper cover. Tighten
the cap screws securely.
5. Install the spark plug(s).
CAUTION
The feeler gauge must be positioned at the same angle
as the valve and valve adjuster for an accurate measure-
ment of clearance. Failure to measure the valve clear-
ance accurately could cause valve component damage.
VALVE/TAPPET CLEARANCE
1000
0.08-0.12 mm (0.003-0.005 in.) - Intake
0.13-0.17 mm (0.005-0.007 in.) - Exhaust