Removing The Reed Valve Assembly; Checking The Reed Valves - Yamaha EK40G Service Manual

POWR

Removing the reed valve assembly

1. Remove the hoses 1.
2. Remove the intake manifold bolts 2, and
then remove the intake manifold cover,
gasket and reed valve assembly #1 3.
5
1
3. Remove the stay 4, intake manifold and
reed valve assembly #2 5.

Checking the reed valves

1. Check the reed valves for bends a.
Replace if above specification.
Valve bend limit a:
0.20 mm (0.0079 in)
5-21
Power unit
1
3
2
6F650260
2
4
6F650270
a
6H950280
2. Measure the valve stopper height b and
c. Replace if out of specification.
Valve stopper height b:
2.2—2.6 mm (0.87—0.102 in)
Valve stopper height c:
4.0—4.4 mm (0.157—0.173 in)
b
c
6H950290
6H95G11