Yamaha F150B, Руководство по обслуживанию

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7-61
Power unit
POWR
Assembling the cylinder block
1. Install the collar
a
by striking it with a
plastic hammer.
2. Install the oil rings
b
, 2nd ring
c
, and
top ring
d
onto each pistons.
3. Make sure that the “RN” mark
a
of the
2nd ring
c
and “R” mark
b
of the top
ring
d
are facing upward.
TIP:
After installing the piston rings, check that
they move smoothly.
4. Offset the piston ring end gaps as
shown.
NOTICE: Do not scratch the
pistons or break the piston rings.
5. Install the upper bearing into the
connecting rod
e
and the lower bearing
into the connecting rod cap
f
.
TIP:
Install the connecting rod bearings in their
original positions.
6. Install the upper main bearings
g
and
the thrust bearing
h
into the cylinder
block
i
.
TIP:
Install the main bearings in their original posi-
tions.
7. Set the crankshaft
j
and oil seal
k
into
the cylinder block.
a
a
E
#1,#4
#2
#5
#3
45
°
45
°
#1
#2
#5
#4
#3
b
c
d
b
a
e
f
g
h
i
g
j
k