Assembling Piston Rings - APRILIA M192M Workshop Manual

ENGINE
3.6.20.

ASSEMBLING PISTON RINGS

•
Position scraper ring spring on piston.
•
To fit the ring, keep its opening opposite the spring
joint with the word top facing the piston crown. The
chamfered edge must face the piston crown.
nd
•
Fit 2 ring with its identification mark or the word top
facing the piston crown. The working step must be op-
posite the piston crown.
st
•
Fit the 1 ring with its identification mark or the word
top facing the piston crown.
NOTE The surface of the two rings mating the cylinder is ta-
pered to ensure better settling.
•
Stagger the ring openings at 120°.
•
Lubricate with engine oil.
•
On the 200 cc version, the 1
tion.
3 - 102
Engines M192M / M191M / M245M / M234M / M282M / M281M
st
ring has a L-shaped sec-