Installing Top-Side Components - Arctic Cat 400 Service Manual

Installing Top-Side
Components
A. Piston
B. Cylinder
KEY
1. Cylinder
2. Stud Bolt
3. Nut
4. Cylinder Gasket
5. Pin
6. Water Hose Union
7. Cap Screw
8. O-Ring
NOTE: If the piston rings were removed, install
them in this sequence.
A. Install ring expander (4) in the bottom groove
of the piston; then install the thin oil rings (3)
over the expander making sure the expander
ends do not overlap. Stagger the end gaps of
the upper and lower thin oil rings according
to the illustration.
NOTE: Note the direction of the exhaust side of
the piston (5) for correct ring end gap orientation.
B. Install the compression rings (1 and 2) so the
letter on the top surface of each ring faces the
dome of the piston. Rotate the rings until the
ring end gaps are on directly opposite sides of
the piston (see illustration).
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3-182
0732-301
ATV-1085B
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NOTE: On the 500, the chrome (silver) ring
should be installed in the top position. On the 650
H1, the ring with the orientation mark (MTOP)
should be installed in the second (middle) groove
and the ring with the orientation mark (M) should
be installed in the first (top) groove.
! CAUTION
Incorrect installation of the piston rings will result
in engine damage.
1. Install the piston on the connecting rod making
sure there is a circlip on each side and the open
end of the circlip faces upwards.
NOTE: The piston should be installed so the
arrow points toward the exhaust.
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ATV-1024
ATV-1024A
CC032D
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