Piston Ring Thickness - Suzuki GSF650S Service Manual

( Piston ring groove width
Standard: (1st) : 1.01 – 1.03 mm
(2nd) : 0.81 – 0.83 mm
(Oil) : 1.51 – 1.53 mm

( Piston ring thickness

Standard: (1st) : 0.97 – 0.99 mm
(2nd) : 0.77 – 0.79 mm
PISTON RING FREE END GAP AND PISTON RING END GAP
Measure the piston ring free end gap using 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 exceed the service limit, replace the piston ring
with a new one.
) 09900-20102: Vernier calipers
( Piston ring free end gap
Service Limit: (1st) : 7.3 mm
(2nd) : 7.3 mm
) 09900-20803: Thickness gauge
( Piston ring end gap
Service Limit: (1st) : 0.5 mm
(2nd) : 0.5 mm
PISTON PINS AND PIN BORE
Measure the piston pin bore inside diameter using the small
bore gauge. If either is out of specification or the difference
between these measurement is more than the limits, replace the
piston.
) 09900-20602: Dial gauge (1/1 000 mm)
09900-22403: Small bore gauge (18 – 35 mm)
( Piston pin bore I.D.
Service Limit: 18.030 mm
ENGINE 3-41