Reed Valve - Yamaha 25J Manuel D'entretien

POWR
INSPECTION
G64000-0

REED VALVE

Inspection
1. Visually inspect for warping of the reed
valve. If warped, measure the distortion
with feeler gauges.
Maximum reed warp a:
0.2 mm (0.008 in)
If the amount of warping is greater than
specification, replace the reed valve.
2. Using a vernier caliper, measure the
valve stopper height.
Valve stopper height b:
2.65 ± 0.15 mm (0.10 ± 0.006 in)
If the valve stopper height is outside the
specification, adjust it by bending.
3. Visually inspect for cracks on the reed
valve.
If cracks are found, replace the reed
valve.
G64500-0
THERMOSTAT
Cleaning
1. Using a soft brush and water, remove
all traces of salt, dirt or corrosion.
Inspection
1. Visually inspect the thermostat for dam-
age.
If the thermostat is damaged, or if it
opens when cold, replace it.
2. Immerse the thermostat in water, and
heat the water gradually. Check the
valve opening temperature and the
valve lift.
5-9
E