Installing The Cylinder Head - Yamaha F4B Service Manual

POWR
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.
j
i
Pivot bolt j:
10 N·m (1.0 kgf·m, 7.4 ft·lb)

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.
7-37
Power unit
j
c
d
d
d
a
d
c
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)
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.
k
a
a
b
d
b
h
f
g
e
i
j