Ski-Doo MX Zx 600 RS, Operator'S Manual

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MAINTENANCE PROCEDURES
Drive Pulley
Drive Pulley Adjustment
WARNING
Remove the tether cord cap be-
fore performing any maintenance
or adjustment, unless otherwise
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 maintain
maximum power.
Calibration screws should be adjusted
so that actual maximum engine RPM
matches the maximum horsepower
RPM.
ENGINE
MAXIMUM
HORSEPOWER RPM
600RS 8400 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 ma-
ximum engine RPM is increased by
400 RPM.
Adjustment
Loosen the lock nut just enough to
pull calibration screw partially out and
adjust to desired position. Do not com-
pletely remove the locking nut. Torque
locking
nuts to 10 N•m ± 2 N•m
(89 lbf• in ± 18 lbf• in ).
NOTICE
Do not completely re-
move calibration screw otherwise
internal washers will fall off. Al-
ways adjust all 3 calibration screws
and make sure they are all set to the
same position.
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