Removing The Cylinder Head; Disassembling The Cylinder Head; Checking The Cylinder Head - Yamaha F225F Service Manual

POWR

Removing the cylinder head

1. Remove the OCVs a and filters a.
2. Remove the cylinder heads b and
gaskets c. NOTICE: Be careful not to
scratch or damage
surfaces of the cylinder head and
cylinder block.

Disassembling the cylinder head

1. Remove the cam position sensors a,
anode assemblies b, exhaust plug c,
and braided plug d.
b
d
a
2. Remove the intake and exhaust valves.
7-55
Power unit
the mating
b
a
a
c
c
b
e
f
Valve spring compressor e: 90890-04019
Valve spring compressor attachment f:
90890-06320
TIP:
Make sure to keep the parts in the order of
removal.
3. Remove the valve seal g.

Checking the cylinder head

1. Remove carbon deposits from the com-
bustion chambers and check the cylinder
head for damage and scratches.
2. Check the cylinder head warpage in 6
directions. Replace the cylinder head if
above specification.
g