Honda HHT25S Manual page 97

CRANKSHAFT / PISTON / VALVES / CYLINDER BLOCK
3. INSPECTION
CYLINDER SLEEVE I.D.
Measure and record the cylinder I.D. at three levels in both the " X "
axis (perpendicular to crankshaft) and the " Y " axis (parallel to
crankshaft). Take the maximum reading to determine cylinder wear
and taper.
Standard
35.000 ~ 35.015 mm
HHT25S
(1.378 ~ 1.379 in)
39.000 ~ 39.015 mm
HHT35S
(1.5350 ~ 1.5360 in)
PISTON SKIRT O.D.
Measure and record the piston O.D. at a point 10 mm (0.39 in) from
the bottom of the skirt and 90° to the piston pin bore.
Standard
34.97 ~ 34.99 mm
HHT25S
(1.377 ~ 1.378 in)
38.97 ~ 38.99 mm
HHT35S
(1.534 ~ 1.535 in)
PISTON-TO-CYLINDER CLEARANCE
Standard
0.0100 ~ 0.045 mm
HHT25S
(0.0004 ~ 0.0018 in)
0.0100 ~ 0.045 mm
HHT35S
(0.0004 ~ 0.0018 in)
PISTON RING WIDTH
Standard
0.9700 ~ 0.9900 mm
Top/Second
(0.0382 ~ 0.0390 in)
9-6
Service limit
35.100 mm
(1.3819 in)
39.100 mm
(1.5393 in)
Service limit
34.900 mm
(1.374 in)
38.900 mm
(1.5314 in)
Service limit
0.1200 mm
(0.0047 in)
0.1200 mm
(0.0047 in)
Service limit
0.9200 mm
(0.0362 in)
X
Y
90°
HHT25S•HHT35S
10 mm (0.39 in)