Suzuki LT-Z250 Service Manual page 113

Install the 2nd ring 3 and the 1st ring 4.
NOTE:
1st ring and 2nd ring differ in shape.
1st ring has letter R marked on the side. Be sure to bring the
marked side to the top when fitting it to the piston.
Position the gaps of the three rings as shown. Before inserting
the piston into the cylinder, check that the gaps are so
located.
Apply engine oil to the piston pin.
Install the piston and piston pin.
NOTE:
When installing the piston, the punched mark A on the piston
head is located to the exhaust side.
Place a cloth beneath the piston, install the circlip 5.
'
Use new piston pin circlips to prevent circlip failure
with bent ones.
1st ring
EX
2nd ring
Lower side
rail
IN
ENGINE 3-71
Upper side
rail
1st ring
Spacer