Yamaha EF2200iS, Service Manual

Page: 91 / 162

PISTON, CONNECTING ROD, CRANKSHAFT AND CRANKCASE
3-41
1
2
3
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5
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9
10
EN
GIN
E
2.
Apply the engine oil to the inside of the connecting rod
small end.
3.
Install:
• Piston “1”
• Piston pin “2”
• Piston pin circlips “3”
TIP
• Make sure that the “FWM” mark “a” on the connecting
rod faces as shown.
• Make sure that the “ ” mark “b” on the piston head
faces toward the push rod.
INSTALLING THE CRANKSHAFT
1.
Make sure that the end gap of each piston ring is
positioned correctly, as shown in the illustration.
2.
Install:
• Piston with the connecting rod “1”
TIP
• Make sure that the “ ” mark “a” on the piston head faces
toward the push rod.
• Make sure that the “PTO” mark “b” on the connecting rod
faces toward the crankcase cover.
3.
Install:
• Crankshaft
• Connecting rod cap
TIP
• Make sure that the “ ” mark “a” on the connecting rod is
aligned with the “ ” mark “b” on the connecting rod cap.
• Tighten the connecting rod cap bolts alternately two to
three times.
1
3
b
2
a
New
a b
c d
45˚
90˚
90˚
90˚
a. Lower oil ring rail
b. 2nd ring
c. Upper oil ring rail
d. Top ring, oil ring expander
1
a
b
a
b
Connecting rod cap bolt:
9 N·m (0.9 kgf·m, 6.6 lb·ft)
T
R
.
.