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PISTONS, CAMSHAFT, CRANKCASE, AND CRANKSHAFT
90˚
d
90˚
c
90˚
1
1
a
1
1
b
INSTALLING THE CRANKSHAFT
1.
Make sure that the end gap of each piston ring is
a
positioned correctly, as shown in the illustration.
45˚
a. Top ring, oil ring expander
b. Lower oil ring rail
c. 2nd ring
d. Upper oil ring rail
b
2.
Install:
• Piston with the connecting rod "1"
3.
Attach:
• Piston ring compressor "1"
Piston ring compressor:
TIP
Attach the piston ring compressor to the piston, and then
insert the piston into the cylinder.
4.
Check:
• Piston #1 with the connecting rod #1 "1" position
TIP
• Make sure that the " " mark "a" on the piston #1 head
faces toward the flywheel.
• Make sure that the "7UD" mark "b" on the connecting rod
#1 faces toward the crankcase cover 1.
3-53
YM-08037
1
2
3
4
5
6
7
8
9
10
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