Sym PA12B Service Manual page 33

2. Maintenance Information
Valve clearance inspection and
adjustment.
Check the intake and exhaust valve clearance
by inserting the feeler gauge between the
adjusting screw and the lock nut.
Valve clearance：
IN 0.05±0.02 mm
EX 0.05±0.02 mm
Adjust by loosening the lock nut first, and
turning the adjusting screw until you feel slight
drag on the feeler gauge.
Hold the adjusting screw and tighten the lock
nut.
Caution:
Check the valve clearance after the
adjustment.
Install the valve clearance-adjusting cap,
cylinder head side cover, and the timing
inspection cap and the AC.G cap on the
crankcase L cover.
Caution:
Before installing the O-ring, you should
check if the O-ring is damaged, and apply
some oil on it to prevent damage when
assembly.
2-8
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