Engine - Yamaha 2012 Grizzly 300 Service Manual

ADJUSTING THE VALVE CLEARANCE
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ENGINE

ADJUSTING THE VALVE CLEARANCE
The following procedure applies to all of the
valves.
TIP
• 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 the Top
Dead Center (TDC) on the compression
stroke.
1. Remove:
• seat
• front fender
• fuel tank
Refer to "SEAT, FENDERS AND FUEL
TANK".
2. Remove:
• A.I.C.V. outlet tube
• air pipe
2
• cylinder head cover • cylinder head cover
3. Remove:
• breather tube
1
• cylinder head side cover
4. Measure:
• valve clearance
Out of specification → Adjust.
Valve clearance (cold)
Intake valve
0.08 ~ 0.12 mm
(0.0031 ~ 0.0047 in)
Exhaust valve
0.13 ~ 0.17 mm
(0.0051 ~ 0.0067 in)
3-9
CHK
ADJ
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