Suzuki RA410 Manual page 317

6A4-58 ENGINE MECHANICAL
2
Piston Rings
To measure end gap, insert piston ring (1) into cylinder bore and
then measure the gap by using thickness gauge (2).
If measured gap is out of specification, replace ring.
NOTE:
Decarbon and clean top of cylinder bore before inserting pis-
ton ring.
Piston ring
end gap
1
Connecting Rod
Big-end side clearance:
Check big-end of connecting rod for side clearance, with rod
fitted and connected to its crank pin in the normal manner. If
measured clearance is found to exceed its limit, replace con-
necting rod.
Big-end side
clearance
Connecting rod alignment:
Mount connecting rod on aligner to check it for bow and twist
and, if limit is exceeded, replace it.
Limit on bow: 0.05 mm (0.0020 in.)
Limit on twist: 0.10 mm (0.0039 in.)
Item
0.12 – 0.27 mm
Top ring
(0.0047 – 0.0106 in.)
0.35 – 0.50 mm
2nd ring
(0.0138 – 0.0197 in.)
0.10 – 0.40 mm
Oil ring
(0.0039 – 0.0157 in.)
Item
0.11 – 0.31 mm
(0.0043 – 0.0122 in.)
Standard
0.7 mm
(0.0276 in.)
1.0 mm
(0.0394 in.)
1.5 mm
(0.0591 in.)
Standard Limit
0.35 mm
(0.0137 in.)
Limit