Suzuki UY125 Service Manual page 69

PISTON RING END GAP
• Measure the piston ring end gap using the vernier calipers.
• Next, fit the piston ring squarely into the cylinder and measure
the piston ring end gap using the thickness gauge.
• If any of the measurements exceeds the service limit, replace
the piston ring with a new one.
$ 09900-20102: Vernier calipers
& Piston ring end gap
Service Limit (1st) : 0.50 mm
(2nd): 0.50 mm
$ 09900-20803: Thickness gauge
PISTON PIN AND PIN BORE
• Measure the piston pin bore diameter using the small bore
gauge.
• If the measurement is out of specification, replace the piston.
& Piston pin bore I.D.
Service Limit: 14.038 mm
$ 09900-20602: Dial gauge (1/1000 mm)
09900-22401: Small bore gauge (10 – 18 mm)
• Measure the piston pin outside diameter at three positions
using the micrometer.
• If any of the measurements is out of specification, replace the
piston pin.
& Piston pin O.D.
Service Limit: 13.980 mm
$ 09900-20205: Micrometer (0 – 25 mm)
http://mototh.com
ENGINE 3-35