Assembling The Cylinder Block - Yamaha F15B Service Manual

POWR

Assembling the cylinder block

1. Install half of the bearings 1 into the
crankcase, then dowel pins 2.
2. Apply Gasket Maker
face of the crankcase.
1
1
2
NOTE:
Do not get any Gasket Maker
bearings.
3. Install the crankcase bolts, and then
tighten them to the specified torques in
two stages and in the sequence shown.
1
9
1
9
5
5
8
8
4
4
NOTE:
Apply engine oil to the crankcase bolt before
installation.
5-47
Power unit
® to the mating sur-
2
6D451460
® on the journal
2
0
2
10
6
6
7 7
3
3
6D451035
Crankcase bolt (M8): 1–4
1st: 15 N·m (1.5 kgf·m, 11 ft·lb)
2nd: 30 N·m (3.0 kgf·m, 22 ft·lb)
Crankcase bolt (M6): 5–0
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 12 N·m (1.2 kgf·m, 8.7 ft·lb)
4. Install the union bolt to specified torque.
Union bolt:
40 N·m (4.0 kgf·m, 30 ft·lb)
5. Install the new gasket and breather cover
then tighten the bolts.
Breather cover bolt:
8 N·m (0.8 kgf·m, 5.8 ft·lb)
6. Install the dowel pins, new gasket,
exhaust cover, thermostat, new gasket
and thermostat cover and then tighten
the bolts to specified torques in two
stages in the sequence shown.
3
2
6
Exhaust cover and thermostat cover
bolt:
1st: 6 N·m (0.6 kgf·m, 4.4 ft·lb)
2nd: 12 N·m (1.2 kgf·m, 8.7 ft·lb)
7
4
1
5
6D451480
6D45F11