Valve Clearance
8. Remove the tensioner stopper (14) from the
cam chain tensioner lifter.
(14) tensioner stopper
9. Install a new sealing washer (15) and cam
chain tensioner lifter cover bolt (16).
(14)
(15)
(16)
(15) sealing wahser
(16) cam chain tensioner lifter cover bolt
10.After installing the cam shaft assembly,
perform the valve clearance and decompressor
arm clearance inspection.
(2)
(1)
(3)
Decompressor Arm Clearance
Adjustment
1. Make sure that the piston is at top dead centre
on the compression stroke (page 67).
Measure the right exhaust valve clearance by
inserting a feeler gauge (1) between the right
side rocker arm (2) and shim (3).
Right Exhaust Valve Clearance:
0.28 ± 0.03 mm (0.011 ± 0.001 in)
(1) feeler gauge
(3) shim
(2) right side rocker arm
2. Pull out the feeler gauge.
(5)
(6)
(4)
(1)
(1) feeler gauge
(5) adjusting screw
(4) lock nut
(6) right side rocker arm
Recheck the decompressor arm clearance.
3. Loosen the lock nut (4) and adjusting screw
(5).
Insert the feeler gauge (1) between the
adjusting screw and right side rocker arm (7).
DECOMPRESSOR CLEARANCE:
RIGHT EXHAUST VALVE CLEARANCE
+
0.35 mm (0.014 in)
Example:
If measured right exhaust valve clearance is
0.28 mm (0.011 in), decompressor clearance is;
0.28 mm (0.011 in) + 0.35 mm (0.014 in)
= 0.63 mm (0.025 in)
Turn the adjusting screw until there is a slight
drag on the feeler gauge.
Hold the adjusting screw and tighten the lock
nut to the specified torque:
10 N·m (1.0 kgf·m, 7 lbf·ft)
74
Servicing Your Honda
061-085.qxd 06.6.1 11:00 ページ74
Summary of Contents for CRF450X
Page 3: ...Honda CRF450X OWNER S MANUAL COMPETITION HANDBOOK Contents qxd 06 6 1 10 56 ページ2 ...
Page 12: ...6 Motorcycle Safety 001 030 qxd 06 6 1 10 57 ページ6 ...
Page 18: ...12 Before Riding 001 030 qxd 06 6 1 10 57 ページ12 ...
Page 28: ...22 Basic Operating Instructions 001 030 qxd 06 6 1 10 57 ページ22 ...
Page 156: ...150 Taking Care of Unexpected 142 168 qxd 06 6 1 11 08 ページ150 ...
Page 169: ...Technical Information 163 Wiring Diagram 142 168 qxd 06 6 1 11 08 ページ163 ...