Piston, Piston Pin, And Piston Rings - Arctic Cat Cougar Service Manual

170
lOA.
On 529 cc engines, install the cylinders as
follows:
a. Install the four flat washers, four lockwash-
ers, four standard nuts and the two flange
nuts that attach the cylinder base to the
crankcase. Tighten the six nuts finger-tight.
b. Make sure you clean all gasket residue from
the water manifold.
c. Apply a thin coat of silicone sealer to the
two manifold gaskets.
d. Install the gaskets and coolant manifold
(Figure 45).
e. Tighten the screws securing the coolant
manifold to the torque listed in Table 10.
f. Tighten the cylinder base retaining nuts in
a crossing pattern to the torque listed in
Table 10.
lOB. On liquid-cooled engines, except the 529
cc El Tigre, install the cylinders as follows:
a. On engines so equipped, be sure the two
dowel pins are installed and properly
seated. The dowels align the cylinders in the
crankcase.
b. Install the flat washers and lockwashers, if
used, and nuts that secure the cylinder base
to the crankcase. Tighten the nuts finger-
tight.
c. Install the exhaust manifold and tighten the
retaining nuts securely. It is not necessary
to install the gaskets at this time; the mani-
fold is only used to align the cylinders and
can be removed after tightening the cylinder
base nuts.
d. Tighten the cylinder base retaining nuts in
a crossing pattern to the torque listed in
Table 10.
11. Install the cylinder head as outlined in this
chapter.
NOTE
Before installing the exhaust manifold,
check the ports and passages in the
manifold for carbon buildup. Clean the
ports as necessary.
CHAPTER FIVE
12. Attach the oil injection line to each of the
cylinders (near the intake port).
13. If the engine is installed in the frame, per-
form the following:
a. Install the carburetors as described in Chap-
ter Six or EFI as described in Chapter
Seven.
b. Install the exhaust system as described in
Chapter Eight.
NOTE
On air-cooled engines, gaskets are lo-
cated around the intake and exhaust
ports on each side of the heat deflector,
or shroud.
14. If new components were installed or if the
cylinders were bored or honed, the engine must
be broken-in as if it were new. Refer to Break-In
Procedure in Chapter Three.
PISTON, PISTON PIN,
AND PISTON RINGS
The piston is made of an aluminum alloy. The
piston pin is a precision fit and is held in place
by a clip at each end. A caged needle bearing is
used at the small end of the connecting rod.
Refer to the illustration for your model when
servicing the piston assembly.
a. Figure 22: Liquid-cooled 529 cc engine
b. Figure 23: Air-cooled 431 cc engines