Honda CRF250X 2007, Owner'S Manual & Competition Handbook

Page: 71 / 185

Valve Clearance
Cylinder Head Cover Removal
Before inspection, clean the engine thoroughly to
keep dirt from entering the engine.
1. Remove the seat (page 36).
2. Remove the fuel tank (page 37).
3. Disconnect the breather tube (1) and direct
ignition coil (2).
Positioning At Top Dead Center On The
Compression Stroke
1. Remove the crankshaft hole cap (1).
(1) breather tube (2) direct ignition coil
4. Remove the cylinder head cover bolts/rubber
seals (3), and cylinder head cover (4).
(3) cylinder head cover bolts/rubber seals
(4) cylinder head cover
(1) crankshaft hole cap
(1)
(2)
(4)
(3)
(1)
Refer to Safety Precautions on page 25.
Excessive valve clearance will cause noise and
eventual engine damage. Little or no clearance
will prevent the valve from closing and cause
valve damage and power loss. Check the valve
clearance when the engine is cold at the intervals
specified in the Maintenance Schedule (pages 27,
28).
The checking or adjusting of the valve clearance
should be performed while the engine is cold.
The valve clearance will change as engine
temperature rises.
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Servicing Your Honda
061-083.qxd 06.7.4 14:20 ページ66