Piston - Suzuki AN400 Service Manual

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* When installing the spacer, be careful so that the
both edges are not overlapped.
* When installing the piston ring, be careful not to
damage the piston.
* Do not expand the piston ring excessively since it is
apt to be broken down.
• Be careful not to mistake the top ring 3 and the second ring
4, the sectional form is different.
• Face the side with the stamped mark A upward when assem-
bling.
• After installing all the piston rings, check that each ring rotates
smoothly.
• To prevent poor compression or oil leaking up to the cylinder
inside, position each ring end gap as shown in the right figure.
A Second ring/side rail (lower side)
B Side rail (upper side)
C Top ring/spacer

PISTON

• Lightly coat the piston pin with SUZUKI MOLY PASTE when
inserting.
. 99000-25140: SUZUKI MOLY PASTE
• When installing the piston, turn the concaved part A on the
piston head to exhaust side.
ENGINE 3-77
INCORRECT
CORRECT
Top ring
2nd ring
EX
120˚
120˚
120˚
IN