Suzuki GSF650S Service Manual page 76

3-40 ENGINE
) 09900-20508: Cylinder gauge set
( Cylinder bore
Standard: 65.500 – 65.515 mm
Service Limit: 65.615 mm
PISTON DIAMETER
Measure the piston diameter using the micrometer at 15 mm
from the skirt end.
If the piston diameter is less than the service limit, replace the
piston.
) 09900-20203: Micrometer (50 – 75 mm)
( Piston diameter
Service Limit: 65.38 mm
PISTON-TO-CYLINDER CLEARANCE
Subtract the piston diameter from the cylinder bore diameter. If
the piston-to-cylinder clearance exceeds the service limit,
replace both the cylinder and piston.
( Piston-to-cylinder clearance
Service Limit: 0.12 mm
PISTON-RING-TO-GROOVE CLEARANCE
Measure the side clearances of the 1st and 2nd piston rings
using the thickness gauge. If any of the clearances exceed the
limit, replace both the piston and piston rings.
) 09900-20803: Thickness gauge
09900-20205: Micrometer (0 – 25 mm)
( Piston-ring-to-groove clearance
Service Limit: (1st) : 0.18 mm
(2nd) : 0.15 mm
15 mm