Installing The Cylinder Head - Yamaha F25C Service Manual

POWR
16. Before installing the oil filter, be sure to
supply engine oil to the oil passage h.
17. Install the oil filter, and then tighten it to
the specified torque using the oil filter
wrench.
NOTE:
Apply a thin coat of engine oil to the O-ring of
the new oil filter before installation.
Oil filter wrench: 90890-01426
Oil filter:
18 N·m (1.8 kgf·m, 13.3 ft·lb)
18. Install a new gasket and the exhaust
cover.
19. Install the thermostat and thermostat
cover, and then tighten the bolts to the
specified torques in two stages and in the
sequence shown.
5-47
Power unit
h
S6D55990
Exhaust cover bolt:
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 12 N·m (1.2 kgf·m, 8.9 ft·lb)
Thermostat cover bolt:
7 N·m (0.7 kgf·m, 5.2 ft·lb)

Installing the cylinder head

1. Install a new gasket and the cylinder
head, and then tighten the bolts to the
specified torques
shown.
$
²!
E
%
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
two stages.
S6D55A10
in the sequence
#
±(
&
S6D55690
6D55F11