Assembling The Cylinder Body - Yamaha FT50C Service Manual

3. Select the suitable color a for the con-
necting rod bearing from the table.
Connecting
Crank pin
rod cap
mark
mark/color
I/Red A
I/Red B
II/Blue A
II/Blue B
A
III/Yellow
B
III/Yellow
4. When installing the connecting rod bear-
ing, insert the projection of the connect-
ing rod bearing into the slot on the
connecting rod.
CAUTION:
Remove any small metal particles and oil
from the contact surfaces of the connect-
ing rod and the connecting rod bearing.
5. Measure the crank pin oil clearance with
a piece of Plastigauge (PG-1).
62Y5A11
6. If the oil clearance is below specification,
7. If the oil clearance is over specification,

Assembling the cylinder body

1. Assemble the piston 1, connecting rod
Bearing
color
Yellow
Red
Pink
Green
Cylinder body
Crank pin oil clearance:
0.016–0.040 mm
(0.0006–0.0015 in)
check the connecting rod bearing color
and clean the contact surface of the con-
necting rod and the connecting rod bear-
ing, and then check the crank pin oil
clearance again.
install an over-sized connecting rod bear-
ing, and then check the crank pin oil
clearance again.
2, piston pin 3, and piston pin clips 4.
1
2
3
4
5
6
7
8
9
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