Yamaha F150A Service Manual page 301

1
Piston ring compressor "1": 90890-05158
7. Install the crankshaft journal bearings "1"
and thrust bearing "2" into the cylinder
block "3".
TIP:
• Install the crankshaft journal bearings "1" in
the original positions.
• Install the thrust bearing "2" at the position
"a".
3
8. Install new oil seal "1" onto the crankshaft
"2", and then install the crankshaft onto
the cylinder block "3".
a
1
2
1
a
9. Install the connecting rod caps "1" to the
piston and connecting rod assemblies,
and then tighten new connecting rod
bolts "2" to the specified torques in 3
stages.
TIP:
• Make sure that the protrusions "a" on the
piston and connecting rod assemblies and
connecting rod caps "1" are facing toward
the flywheel magnet end of the crankshaft.
• In the third tightening stage for the connect-
ing rod bolts "2", mark the connecting rod
bolts and connecting rod cap with paint
marks "b", and then tighten the connecting
rod bolts 90° from the marks on the con-
necting rod cap.
• After tightening the connecting rod bolts
"2", make sure that the crankshaft turns
smoothly.
b
90˚
1
a
7-76
Crankcase
3
1
2
3
1
2
1
2