Engine; Adjusting The Valve Clearance - Yamaha 2004 YXR660 Service Manual

ADJUSTING THE VALVE CLEARANCE

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ENGINE

ADJUSTING THE VALVE CLEARANCE
NOTE:
• The valve clearance must be adjusted when
the engine is cool to the touch.
• Adjust the valve clearance when the piston is
at the Top Dead Center (TDC) on the com-
pression stroke.
1. Remove:
• driver seat
• passenger seat
• console
Refer to "SEATS, ENCLOSURE, HOOD
AND CARGO BED" in chapter 8.
2. Lift the cargo bed up.
3. Remove:
• tappet cover (intake) 1
• tappet covers (exhaust) 2
4. Disconnect:
• spark plug cap 3
5. Remove:
• spark plug
6. Remove:
• air shroud 1 1
CHK
ADJ