5-29
CYLINDERS AND PISTONS
ENG
NOTE:
X + Y
2
C =
2. Measure:
piston-to-cylinder clearance
a. Measure cylinder bore “C” with the cylinder
bore gauge.
a 45 mm from the top of the cylinder
Measure cylinder bore “C” by taking side-to-
side and front-to-back measurements of the cyl-
inder. Then, find the average of the measure-
ments.
Standard
Wear
limit
Cylinder
bore C:
48.990
49.030 mm
49.130 mm
b. If out of specification, rebore or replace the
cylinder, and replace the piston and piston
rings as a set.
c. Measure piston skirt diameter “P” with the
micrometer.
b 3 mm from the bottom edge of the piston.
Piston size P
Standard
48.965
49.005 mm
d. If out of specification, replace the piston and
piston rings as a set.
e. Calculate the piston-to-cylinder clearance
with the following formula.
Piston-to-cylinder clearance =
Cylinder bore “C” –
Piston skirt diameter “P”
Piston-to-cylinder clearance
0.02
0.03 mm
<Limit>: 0.15 mm
f. If out of specification, replace the cylinder, and
replace the piston and piston rings as a set.
Содержание XVS250 2001
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Страница 300: ...7 23 1 A C magneto 2 Rectifier regulator 4 Fuse main 6 Battery CHARGING SYSTEM ELEC CHARGING SYSTEM CIRCUIT DIAGRAM ...
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