Yamaha F4B, Service Manual

Page: 122 / 202

7-29
POWR
Power unit
Removing the cylinder head
1. Remove the spark plug
a
, thermostat
cover
b
, gasket
c
, thermostat
d
, and
thermostat cover anode
e
.
2. Loosen the bolts
f
in the order
a
,
b
,
and so on, and then remove the cylinder
head cover
g
and gasket
h
.
3. Loosen the valve adjusting locknuts
i
,
and then remove the rocker arm pivots
j
and rocker arms
k
.
4. Loosen the cylinder head bolts
l
in the
order
a
,
b
, and so on, and then remove
the cylinder head
m
, gasket
n
, and push
rods
o
. NOTICE: Do not scratch or
damage the mating surfaces of the
cylinder head and cylinder block.
Disassembling the cylinder head
1. Remove the push rod guide
a
.
2. Remove the intake and exhaust valves.
a
b
c
d
e
a
b
c
d
e
f
f
g
h
f
i
i
j
j
k
k
a
b
c
d
l
l
l
l
m
n
o
o
a