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Yamaha F4B Service Manual

Yamaha F4B
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7-37
POWR
Power unit
4. Tap the valve spring retainer lightly using
a plastic hammer to seat the valve cotter
securely.
5. Install the push rod guide i, and then
tighten the pivot bolts j to the specified
torque.
Installing the cylinder head
Do not reuse a gasket, always replace it
with a new one.
1. Install the dowels a, a new gasket b,
and the cylinder head c, and then
tighten the cylinder head bolts d to the
specified torques in 2 stages and in the
order a, b, and so on.
2. Install the thermostat cover anode e to
the thermostat cover f, and then tighten
the thermostat cover anode screw g to
the specified torque.
3. Install the thermostat h, a new gasket
i, the thermostat cover f, and then
connect the ground lead j.
4. Install the spark plug k, and then tighten
it to the specified torque.
Pivot bolt j:
10 N·m (1.0 kgf·m, 7.4 ft·lb)
i
j
j
Cylinder head bolt d:
1st: 13 N·m (1.3 kgf·m, 9.6 ft·lb)
2nd: 28 N·m (2.8 kgf·m, 20.7 ft·lb)
d
d
d
c
b
a
a
d
c
b
a
d
k
f
i
g
h
j
e

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Yamaha F4B Specifications

General IconGeneral
BrandYamaha
ModelF4B
CategoryOutboard Motor
LanguageEnglish

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