Valve Clearance
Shim Selection
1. Clean the shim contact area in the valve lifter
(1) with compressed air.
2. Measure the shim thickness and record it.
Seventy-three different thickness shims (2) are
available from the thinnest (1.200 mm
thickness) shim to the thickest (3.000 mm
thickness) in intervals of 0.025 mm.
3. 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 the micrometer.
• Reface the intake valve seat if carbon deposits
result in a calculated dimension of over
2.450 mm.
Reface the exhaust valve seat if carbon deposits
result in a calculated dimension of over
3.000 mm.
(1)
180
1.80 mm
1.825 mm
1.85 mm
1.875 mm
182
185
188
(2)
(2) shim
(1) valve lifter
Servicing Your Honda
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061-085.qxd 06.6.1 11:00 ページ71
Содержание CRF450X
Страница 3: ...Honda CRF450X OWNER S MANUAL COMPETITION HANDBOOK Contents qxd 06 6 1 10 56 ページ2 ...
Страница 12: ...6 Motorcycle Safety 001 030 qxd 06 6 1 10 57 ページ6 ...
Страница 18: ...12 Before Riding 001 030 qxd 06 6 1 10 57 ページ12 ...
Страница 28: ...22 Basic Operating Instructions 001 030 qxd 06 6 1 10 57 ページ22 ...
Страница 156: ...150 Taking Care of Unexpected 142 168 qxd 06 6 1 11 08 ページ150 ...
Страница 169: ...Technical Information 163 Wiring Diagram 142 168 qxd 06 6 1 11 08 ページ163 ...