Piston Ring Groove Width; Piston Ring Thickness; Piston Ring End Gap - Suzuki EN125-2A Service Manual

3-21 ENGINE

Piston ring groove width

Piston ring
1st
2nd
Oil
PISTON RING FREE END GAP AND

PISTON RING END GAP

Before installing piston rings, measure the free
end gap of each ring using vernier calipers.
Next, fit the ring in the cylinder, and measure each
ring end gap using a thickness gauge.
If any ring has an excess end gap, replace the ring.
Piston ring free end gap
Vernier calipers
Piston ring
1st R
2nd R
Piston ring end gap
Thickness gauge
Piston ring
1st and 2nd
Service limit
1.01 1.03 mm
1.01 1.03 mm
2.01 2.03 mm
09900-20101
Service limit
5.6 mm
4.8 mm
09900-20803
Service limit
0.50 mm

Piston ring thickness

Piston ring
1st
2nd
Service limit
0.97-0.99 mm
0.97-0.99 mm