7-55
Power unit
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 the mating
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
.
2.
Remove the intake and exhaust valves.
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.
a
b
a
c
b
b
d
c
a
Valve spring compressor
e
: 90890-04019
Valve spring compressor attachment
f
:
90890-06320
e
f
g
Summary of Contents for F225F
Page 1: ...SERVICE MANUAL 6CE 28197 3N 11 F L 225F F L 250D F L 300B ...
Page 4: ......
Page 54: ...1 31 SPEC Specification MEMO ...
Page 89: ...2 34 Lower unit 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 263: ...6 28 Canister 0 1 2 3 4 5 6 7 8 9 10 A j k f b ...
Page 477: ...8 98 Shimming counter rotation model 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 537: ...9 58 PTT cylinder 0 1 2 3 4 5 6 7 8 9 10 A MEMO ...
Page 562: ...A 1 MEMO ...
Page 565: ......
Page 566: ...May 2010 1 ABE E_1 YAMAHA MOTOR CO LTD ...
Page 576: ...A 13 ...