Ski-Doo REV XP 2008 Series, Operator'S Manual

Page: 122 / 155

Snug up locking nut by turning tool
clockwise (± 4 turns).
mmo2008-003-044_b
TURN TOOL CLOCKWISE
Reinstall belt guard.
Close LH side panel.
Drive Pulley Adjustment

WARNING
Remove the tether cord cap (DESS
key) before performing any main-
tenance or adjustment, unless oth-
erwise specified. Vehicle must be
parked in a safe place, away from
the trail.
General
The drive pulley is factory calibrated to
transmit maximum engine power at a
predefined RPM. Factors such as am-
bient temperature, altitude or surface
condition may vary this critical engine
RPM thus affecting snowmobile effi-
ciency.
This adjustable drive pulley allows set-
ting maximum engine RPM to main-
tain maximum power.
Calibration screws should be adjusted
so that actual maximum engine RPM
matches the maximum horsepower
RPM.
ENGINE
MAXIMUM
HORSEPOWER RPM
500SS 8000 RPM (± 100)
600 HO SDI
8100 RPM (± 100)
800R 8150 RPM (± 100)
NOTE: Use precision digital tachome-
ter for engine RPM adjustment.
NOTE: The adjustment has an effect
on high RPM only.
Calibration screw has a notch on top
of its head.
1
A33D19A
TYPICAL
1. Notch
There are 6 positions numbered 1 to 6.
Each position modifies maximum en-
gine RPM by about 200 RPM.
Lower position numbers decrease en-
gine RPM in steps of 200 RPM and
higher position numbers increase it in
steps of 200 RPM.
Example:
Calibration screw is set at position
4 and is changed to position 6. So
maximum engine RPM is increased
by 400 RPM.
Adjustment
Just loosen locking nut enough to
pull calibration screw partially out
and adjust to desired position.
Do
not completely remove the locking
nut. Torque locking nuts to 10 N•m
(89 lbf•
in ).
120
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