Installing The Cylinder Head - Yamaha F30A Service Manual

POWR

Installing the cylinder head

1. Install a new gasket, the dowels, and the
cylinder head, and then tighten the bolts
to the specified torques in the sequence
shown.
B
0
9
E
A
CAUTION:
Do not reuse the cylinder head gasket,
always replace it with a new one.
NOTE:
• Apply engine oil to the cylinder head bolts
before installation.
• Tighten the bolts to the specified torques in
2 stages.
Cylinder head bolt (M9):
1st: 23 N·m (2.3 kgf·m, 17.0 ft·lb)
2nd: 46 N·m (4.6 kgf·m, 33.9 ft·lb)
Cylinder head bolt (M6):
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 12 N·m (1.2 kgf·m, 8.9 ft·lb)
2. Adjust the valve clearances.
NOTE:
• Be sure to install the timing belt before
adjusting the valve clearances.
• To adjust the valve clearances, see
"Checking the valve clearance" (5-2).
5-39
Power unit
8 7
4 3
1 2
E
5 6
S67C5115
67C3K11