Suzuki GZ250 Service Manual page 73

OVERSIZE RINGS
Oversize piston ring
The following oversize piston ring is used. It bears the fol-
lowing identification number.
Piston ring 1st and 2nd
Oversize oil ring
The following oversize oil ring is used. It bears the follow-
ing Identification mark.
Oil ring 0.5 mm: Painted blue 1.0
mm: Painted yellow
Oversize side rail
Measure the outside diameter to identify the side.
PIN BORE
Measure the piston pin bore inside diameter using the cali-
per gauge and measure the piston pin outside diameter
using the micrometer. If either is out of specification or the
difference between these two measurements is more than
the limits, replace both piston and piston pin.
09900-20605: Dial calipers 09900-
20205: Micrometer (0-25 mm)
Service Limit
Piston pin bore: 18.030 mm (0.7098 in)
Piston pin O.D.: 17.980 mm (0.7079 in)
0.5 mm: 50
1.0 mm: 100
ENGINE 3-36
0.5mmO.S
I.OmmO.S.
Oil ring
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