Performance Tips - Arctic Cat CFR 800 2010 Operator's Manual

PERFORMANCE TIPS

Operating a high performance snow-
mobile requires a special attention that
is not required by a low performance
snowmobile. Often, a minor adjust-
ment will result in a large increase in
performance. This section is intended
to highlight minor conditions that
adversely affect performance and the
adjustments needed to correct them. Be
sure, however, to thoroughly read and
understand this entire manual espe-
cially the section on spark plugs, track
tension and alignment, and suspension.
DRIVE BELT — This link between the
engine and drive train is often the most
neglected component. The drive belt
must have the proper fit in the drive
clutch and driven pulley. Proper fit is
when the top surface of the drive belt is
flush with the top or up to 1/16 in.
higher than the driven pulley sheaves
(with the sheaves fully closed). If drive
belt deflection is above specification,
the snowmobile will bog and lack power
at engagement and will have a slower
maximum speed. For good performance,
proper belt deflection is critical. To cor-
rect this condition, first determine if the
drive belt is within specifications (see
Drive Belt sub-section) and replace if
worn or too long. Always run the drive
belt in the same direction. Installing the
drive belt so the part number can be
read will ensure that the drive belt is
always run the same direction.
DRIVE BELT DEFLECTION —
Drive belt length, condition, and
deflection are all important for peak
performance. To check and adjust drive
belt deflection, remove the belt guard;
then use the following procedure.
72
 NOTE: It may be necessary to
remove a shim
between the driven pulley sheaves
to allow the driven pulley to close
tighter. Adding shim washers will
decrease belt
removing shim
increase belt deflection. Available
shim washers from Arctic Cat are
p/n 0648-714 (0.090 in.) - one
included in the tool kit, p/n 0648-
715 (0.030 in.), and p/n 0648-716
(0.060 in.).
 NOTE: Removing/adding shim
washers may be done by the snow-
mobile owner if qualified to do so.
If the owner does not feel qualified,
take the snowmobile to an autho-
rized Arctic Cat Snowmobile dealer
for this service. This service is at
the discretion and expense of the
snowmobile owner.
1. Turn the engine off; then open the
access panel.
2. Make sure the drive belt is sitting
at the top of the driven pulley
sheaves.
3. Place a straightedge on top of the
drive belt. The straightedge should
reach from the driven clutch to the
top of the driven pulley.
4. Using a
between the drive clutch and
driven pulley, push down on the
drive belt just enough to remove
all slack. Note the amount of
deflection on the ruler at the bot-
tom of the straightedge. The
deflection should be at 1 1/4 in.
PERFORMANCE TIPS
washer
deflection
washers
stiff ruler centered
from
and
will