Service Points; Cylinder Block Inspection; Piston Inspection - Yamaha F100A Wartungshandbuch

POWR
D
CRANKSHAFT AND PISTON/
CONNECTING ROD ASSY.
D
2
D and D
1 2
D and D
3 4
D and D
5 6

SERVICE POINTS

Cylinder block inspection

1. Measure:
Cylinder bore
Out of specification → Rebore the cyl-
inder or replace the cylinder block.
79.000 ~ 79.020 mm
Cylinder
(3.110 ~ 3.111 in)
bore "D"
Taper
limit "T"
Out of
round limit
D = Maximum Dia. (D
T = (maximum D
or D )
6
NOTE:
Measure the cylinder bore in parallel and at
a right angle to the crankshaft. Then, aver-
age the measurements.

Piston inspection

1. Measure:
Piston diameter
Out of specification → Replace the
piston.
Distance
13 mm
Standard
(0.51 in)
Oversize piston diameter:
Oversize 1: + 0.25 mm (0.001 in)
5-37
Standard
0.08 mm
—
(0.003 in)
0.08 mm
—
(0.003 in)
~ D )
1 6
or D ) – (minimum D
1 2
Piston diameter
a
78.928 ~ 78.949 mm
(3.1074 ~ 3.1082 in)
E
Wear
limit
—
5