Reed Valve - Yamaha 20C Service Manual

POWR
INSPECTION
G64000-0*

REED VALVE

Inspection
1) Visually inspect for warping of the reed valve. If
warped, measure the distortion with feeler
gauges.
Valve bending limit
0.200 mm (0.0079 in)
If the amount of warping is greater than specifi-
cation, replace the reed valve.
2) Using a vernier caliper, measure the valve stop-
per height.
Valve stopper height:
5.00 – 5.50 mm (0.20 – 0.22 in)
If the valve stopper height is outside the speci-
fication, adjust it by bending.
3) Visually inspect for cracks on the reed valve. If
cracks are found, replace the reed valve.
5-21
E