27
CYLINDER
POWR
NOTE:
SERVICE POINTS
Cylinder inspection
1. Eliminate:
Carbon deposits
Use a rounded scraper
1
.
2. Inspect:
Cylinder water jacket
Mineral deposits / Corrosion
Clean.
Cylinder inner surface
Score marks
Repair or replace.
Use #600
800 grit wet sandpaper.
3. Measure:
Cylinder bore “D”
Use cylinder gauge.
Out of limit
Replace.
Measure the cylinder bore “D” in parallel. Then,
find the average of the measurement.
Standard
Limit
Cylinder
81.00
81.02 mm
81.10 mm
bore “D”
(3.189
3.190 in)
(3.193 in)
0.08 mm
Taper “T”
–
(0.003 in)
Out of
0.05 mm
–
round “R”
(0.002 in)
D = Maximum (D
1
– D
6
)
T = (Maximum D
1
or D
2
) – (Maximum
D
5
or D
6
)
R = (Maximum D
1
, D
3
or D
5
) – (Minimum
D
2
, D
4
or D
6
)