Fasteners; Torque Specifications; Index - Arctic Cat Cougar Service Manual

GENERAL INFORMATION
through the exhaust port. As the piston continues
downward, the intake port (or reed valves) are
closed and the mixture in the crankcase is com-
pressed in preparation for the next cycle.
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7
TORQUE SPECIFICATIONS
Torque specifications throughout this manual
are given in Newton-meters (N.m) and foot-
pounds (ft.-lb.). Table 5 lists general torque
specifications for nuts and bolts that are not listed
in the respective chapters. To use the table, first
determine the size of the nut or bolt by measuring
it with a vernier caliper. Figures 12 and 13 show
how to do this.
FASTENERS
The materials and designs of the various fas-
teners used on your snowmobile are not deter-
mined by pure chance or accident. Fastener
material, size, and thread type are carefully se-
lected to decrease the possibility of physical
failure. Fastener design determines the type of
tool required to move the fastener (Figure 14).
Nuts, bolts and screws are manufactured in a
wide range of thread patterns. To join a nut and
bolt, the diameters of the bolt and the hole in the
nut must be the same and the threads on both
parts must also be the same.
The best way to tell if the threads on two
fasteners are matched is to tum the nut on the bolt
(or the bolt into the threaded hole in a piece of
equipment) with fingers only. Be sure both
pieces are clean. If much force is required, check
the thread condition on each fastener. If the
condition of threads on both parts is good but the