Installing The Valves - Yamaha F200C Service Manual

2. Check the cylinder head warpage using a
straightedge 1 and thickness gauge 2
in six directions as shown. Replace if out
of specification.
Cylinder head warpage limit:
0.1 mm (0.004 in)

Installing the valves

1. Install the new valve seal 1 to the valve
guide.
2. Install the valve 2, valve spring 3, and
valve spring retainer 4 in the sequence
shown, and then attach the special ser-
vice tool.
69J1D11
NOTE:
The valve spring can be installed in any
direction.
Valve spring compressor 5:
YM-01253
Valve spring compressor attachment
6:
YB-06320
3. Compress the valve spring, and then
install the valve cotter 7 using a thin
screwdriver with a small amount of
grease applied to it.
Cylinder head
5-40
1
2
3
4
5
6
7
8
9