Installing The Camshaft - Yamaha F25C Service Manual

POWR
2. Install the valve 2, valve spring seat 3,
valve spring 4, and valve spring retainer
5 in the sequence shown, and then
attach the special service tool.
NOTE:
Face the fine pitch side a of the valve spring
toward the spring seat.
Valve spring compressor 6:
90890-04019
Valve spring compressor
attachment 7:
90890-06320
3. Compress the valve spring, and then
install the valve cotter 8 using a thin
screwdriver with a small amount of
grease applied to it.
5-31
Power unit
4. Lightly tap the valve spring retainer with
a plastic hammer to set the valve cotter
securely.

Installing the camshaft

1. Install a new oil seal 1.
3
2
Bearing outer race attachment 2:
90890-06626
Driver rod LS 3: 90890-06606
2. Install the camshaft 4 in the direction
shown, then the retaining bolt 5.
1
S6D55620
6D55F11