Loading ...
Loading ...
Loading ...
86 Servicing Your Honda
Valve Clearance
10. Lift the rocker arms (20) up and remove the
shims (21).
Record the original position of each shim.
NOTICE
Be careful not to damage the rocker arms.
Do not clean the rocker arms using a
commercially available compound cleaner.
1. Measure the shim thickness with a micrometer
and record it.
Seventy-three different shims (1) are available
in 0.025 mm thickness intervals, from 1.200
mm (the thinnest) to 3.000 mm (the thickest).
2. Calculate the new shim thickness using the
equation below.
A = (B – C) + D
A: New shim thickness
B: Recorded valve clearance
C: Specified valve clearance
D: Old shim thickness
• Make sure of the correct shim thickness by
measuring the shim with a micrometer.
• Reface the exhaust valve seat if carbon deposits
result in a calculated dimension of over 3.000
mm.
NOTICE
Do not lap the valves. They are titanium and have
a thin oxide coating. Lapping will damage this
coating.
If required shim size is outside the available range,
have your motorcycle inspected by your dealer.
(20) rocker arms
(21) shims
(20)
(21)
(20)
(21)
Shim Selection
(1) shim
(1)
1.80 mm 1.825 mm 1.85 mm
1.875 mm
Loading ...
Loading ...
Loading ...