Installing The Cylinder Head - Yamaha F200C Service Manual

POWR
4. Lightly tap the valve spring retainer with
a plastic hammer to set the valve cotter
securely.
NOTE:
Apply engine oil to the valve shims and valve
lifters before installation.

Installing the cylinder head

1. Install the new gaskets and cylinder
heads, and then tighten the bolts to the
specified torques
shown.
CAUTION:
Do not reuse the cylinder head gaskets,
always replace them with new ones.
5-41
Power unit
in the sequence
NOTE:
• Apply enginLe oil to the cylinder head bolts
before installation.
• Tighten the M10 bolts to the specified
torques in three stages first, and then
tighten the M8 bolts to the specified torques
in two stages.
• Make a mark a on the M10 bolts and the
cylinder head, and then tighten the bolts
90° from the mark.
Cylinder head bolt (M10):
1st: 19 N·m (1.9 kgf·m, 14 ft·lb)
2nd: 37 N·m (3.7 kgf·m, 27 ft·lb)
3rd: 90°
Cylinder head bolt (M8):
1st: 14 N·m (1.4 kgf·m, 10 ft·lb)
2nd: 28 N·m (2.8 kgf·m, 20 ft·lb)
2. Connect the ground lead.
3. Align the projection (wide one) b on the
camshaft sprockets to the alignment
plate (gold) c on the timing chain, and
then install the camshafts to the cylinder
head with new oil seals.
69J1D11