Table des Matières
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POWR
CYLINDERS
SERVICE POINTS
Cylinder inspection
1. Eliminate:
• Carbon deposits
(using a rounded scraper 1)
2. Check:
• Cylinder water jacket
Corrosion/mineral deposits → Clean or
replace.
• Cylinder inner surface
Score marks → Replace.
3. Measure:
• Cylinder bore "D"
(using a cylinder gauge)
Out of specification → Replace cylinder
and piston as a set.
NOTE:
Measure the cylinder bore parallel to and at a
right angle to the crankshaft. Then, average
the measurements.
Cylinder bore
"D"
Taper "T"
Out of round
"R"
D = Maximum (D
T = (Maximum D
or D
)
6
R = (Maximum D
D
, D
or D
2
4
5-30
Standard
Limit
84.000–
84.018 mm
84.100 mm
(3.3071–
(3.3110 in)
3.3078 in)
0.080 mm
—
(0.0031 in)
0.050 mm
—
(0.0020 in)
–D
)
1
6
or D
) – (Maximum D
1
2
, D
or D
) – (Minimum
1
3
5
)
6
E
5
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