Yamaha 60F - Inspection; Reed Valve

5-11
POWR
E
INSPECTION
4. Using dial gauges, measure the deflec-
tion.
If the deflection is greater than the spec-
ified maximum, correct the alignment
by use of a copper hammer and a
wedge.
If the deflection is greater than the spec-
ified maximum, replace the crankshaft
assembly.
Maximum deflection:
50, 60, 70 hp:
0.03 mm (0.0012 in)
75, 80, 90 hp:
0.05 mm (0.0020 in)
G64000-0*
REED VALVE
INSPECTION
1. Visually inspect for warping of the reed
valve. If warped, measure the distortion
with feeler gauges.
If the amount of warping is greater than
the specification, replace the reed valve.
2. Using a vernier caliper, measure the
valve stopper height.
If the valve stopper height is outside the
specification, adjust it by bending it.
3. Visually inspect for cracks on the reed
valve. If cracks are found, replace the
reed valve.
Warpage limit a:
0.2 mm (0.01 in)
Valve stopper height b:
50, 60 hp:
3.0 ± 0.2 mm (0.12 ± 0.01 in)
70, 75, 80, 90 hp:
9.9 ± 0.2 mm (0.39 ± 0.01 in)