Servicing Your Honda
73
Valve Clearance
8. Remove the tensioner stopper (15) from the
cam chain tensioner lifter.
(15) tensioner stopper
9. Install a new sealing washer (16) and cam
chain tensioner lifter cover bolt (17).
(15)
(16)
(17)
(16) sealing wahser
(17) 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 center
on the compression stroke (page 55).
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:
0.011 ± 0.001 in (0.28 ± 0.03 mm)
(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
+
0.014 IN (0.35 mm)
Example:
If measured right exhaust valve clearance is
0.011 in (0.28 mm), decompressor clearance is;
0.011 in (0.28 mm) + 0.014 in (0.35 mm)
= 0.025 in (0.63 mm)
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:
7 lbf·ft (10 N·m, 1.0 kgf·m)
Summary of Contents for 450X 2005
Page 1: ...2005 Honda CRF450X OWNER S MANUAL COMPETITION HANDBOOK ...
Page 10: ...6 Motorcycle Safety ...
Page 16: ...12 Before Riding ...
Page 26: ...22 Basic Operating Instructions ...
Page 110: ...106 Servicing Your Honda ...
Page 154: ...150 Taking Care of Unexpected ...
Page 168: ...164 Technical Information Wiring Diagram ...
Page 179: ...Memo 175 ...