Adjusting The Valve Clearance - Yamaha MX360 Service Manual

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PERIODIC MAINTENANCE
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ADJUSTING THE VALVE CLEARANCE

1. Remove:
9 Spark plug cap 1
9 Spark plug 2
NOTICE
Before removing the spark plug, use com-
pressed air to clean the cylinder head
cover to prevent dirt from falling into the
engine.
2. Remove:
9 Breather hose 3
9 Air filter case stay 4
9 Cylinder head cover 5
9 Cylinder head cover gasket
3. Pull the recoil starter slowly, and then set
the piston at TDC (top-dead-center) on
the compression stroke.
TIP
Check the piston position by inserting a screw
driver into the spark plug hole.
4. Measure:
9 Valve clearance
(Between the rocker arm and valve
stem end)
Out of specification → Adjust.
TIP
Valve clearance must be measured when the
engine has cooled down enough to be
touched.
Feeler gauge set:
YU-26900-9
Thickness gauge:
90890-03180
2-12
CHK
ADJ