Engine; Adjusting The Valve Clearance - Yamaha XT660R Service Manual

ADJUSTING THE VALVE CLEARANCE

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EAS00049

ENGINE

ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.
NOTE:
_
• Valve clearance adjustment should be made
on a cold engine, at room temperature.
• When the valve clearance is to be measured
or adjusted, the piston must be at top dead
center (TDC) on the compression stroke.
1. Remove:
• seat
• side panels (left and right)
Refer to "COWLING AND COVER".
• fuel tank
Refer to "FUEL TANK".
• radiator
Refer to "RADIATOR" in chapter 6.
• air-filter-to-air-cut-off-valve hose
Refer to "AIR INDUCTION SYSTEM" in
chapter 7.
2. Remove:
• intake tappet cover
2
• exhaust tappet cover 1
• camshaft sprocket cover 2
3. Disconnect:
• spark plug cap 1
4. Remove:
• spark plug 2
5. Remove:
• timing mark accessing screw 1
• crankshaft end accessing screw 2
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CHK
ADJ