Yamaha F100B - Checking the Cylinder Head

60C5D11
5-32
1
2
3
4
5
6
7
8
9
3. Measure the camshaft journal diameter
c
and cylinder head journal inside diam-
eter
d
. Replace the camshaft and cylin-
der head if out of specification.
4. Calculate the camshaft oil clearance
e
as follows. Replace the camshaft and
cylinder head as a set if out of specifica-
tion.
Checking the cylinder head
1. Eliminate carbon deposits from the com-
bustion chambers and check for deterio-
ration.
2. Check the cylinder head warpage using a
straightedge
1
and thickness gauge
2
in five directions as shown. Replace if out
of specification.
Camshaft journal diameter
c
:
24.96–24.98 mm
(0.9827–0.9834 in)
Camshaft cap inside diameter
d
:
25.00–25.02 mm
(0.9843–0.9850 in)
e
=
d
–
c
:
0.02–0.06 mm (0.0008–0.0023 in)
S60C5640
Cylinder head warpage limit:
0.1 mm (0.004 in)
S60C5650
Cylinder head