Ski-Doo Expedition LE, Operator'S Manual

Page: 104 / 163

MAINTENANCE PROCEDURES
NOTE: This setting is correct as a pre-
liminary adjustment for most models
and belt types. In some cases, when
starting the engine, the vehicle could
creep, indicating that the belt is too
tight.
If the vehicle creeps, lower the drive
belt height from the preliminary set-
ting. Repeat procedure until creeping
stops.
Reverse Activation
NOTE: The reverse may not activate
or may be harder to activate if the belt
is positioned too high in the driven pul-
ley. If reverse activation does not work
properly, ensure the drive belt is prop-
erly adjusted. Adjust the drive belt
lower in the driven pulley if needed.
Drive Pulley
Drive Pulley Adjustment
All drive pulleys are factory calibrated
for sea level operation.
900 ACE and 1200 4-TEC Models
Not adjustable.
600 HO E-TEC Models
Drive pulley on 600 HO E-TEC are fully
adjustable.
WARNING
Remove the tether cord cap from
engine cut-off switch before per-
forming any adjustment. Vehicle
must be parked in a safe place,
away from the trail.
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
600 HO E-TEC 8100 RPM (± 100)
NOTE: Use precision digital tachome-
ter for engine RPM adjustment.The
adjustment has an effect on high RPM
only.
Calibration screw has a notch on top of
its head.
1
A33D1 9 A
TYPICAL
1. Notch
There are 6 positions numbered 1 to 6.
Each position modifies maximum en-
gine RPM by approximately 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.
102
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