3-41
PISTON, CONNECTING ROD, CRANKSHAFT AND
CRANKCASE
SCF3750
SCF3760
SCF3780
CRANKSHAFT ASSEMBLY
1. Make sure that the end gap of each piston
ring is positioned, as shown in the illustra-
tion.
a
Top ring
b
Second ring
c
Oil ring
2. Install:
9
Piston ring compressor
1
3. Install:
9
Piston
1
9
Connecting rod
2
NOTE:
9
Make sure that the
“
∇
”
mark
a
on the
pis-ton head faces toward the push rod.
9
Make sure that the “YAMAHA” mark
b
on the connecting rod faces toward the
crank-case cover.
4. Install:
9
Crankshaft
9
Connecting rod cap
NOTE:
Make sure that the “
∇
” mark
a
on the con-
necting rod is aligned with the “
∇
” mark
b
on
the rod cap.
5. Install:
9
Camshaft
9
Crankcase cover
Refer to “CRANKCASE COVER AND
CAMSHAFT”.
ENG
Piston ring compressor:
YU-33294, 90890-05158
12 Nm (1.2 m · kg, 8.7 ft · lb)
7CF7E0-03 05.7.3 15:14 Page 41
