Honda CB900F Service Manual page 61

Sixty-five different
Measure the shim thickness and record it.
shim thicknesses
are available from
1.200 mm
to
2.800 mm in
intervals of 0.025
mm.
Calculate the new shim thickness using the equation
below.
A
=
(B -
CI
+
D
A: New shim thickness
B: Recorded valve clearance
C: Specified valve clearance
0: Old shim thickness
MAINTENANCE
SHIM
\
eeee
Make sure of the correct shim th ickness
by
measur-
ing the shim
by
micrometer.
Reface the valve seat
if
carbon deposit result in
a
calculated dimension of over 2.800 mm .
1.80 mm 1.825 mm 1.85 mm 1.875 mm
Instalf the shims
and valve fifters in
their original
locations.
Install the newly selected shim on the valve retainer.
Apply molybdenum disulfide oil to the valve lifters.
Install the valve lifters into the valve lifter holes .
Install the camshaft (page 8-23).
Rotate the camshafts by rotating the crankshaft clock-
wise several times.
Recheck the valve clearance .
Remove the cam chain tensioner stopper tool.
STOPPER TOOL
Install the new sealing washer and cam chain
tensioner lifter sealing bolt.
Tighten the bolt securely.
Install the removed parts in the reverse order of
removal.
3-11