MAINTENANCE PROCEDURES
mmo2012-006-905_a
TYPICAL - PRELIMINARY SETTING
1. L owest portion of cogs even with external
surface of drive belt
Al l Drive Belt Types
NOTE: Turning the ring counterclock-
wise lowers the drive belt in the pulley.
Turning the ring clockwise raises the
drive belt in the pulley.
5. Firmly tighten the clamping bolt. If
possible, tighten to specified torque
using a torque wrench.
TORQUE
Clamping bolt
5.5 N•m ± 0.5 N•m
(49 lbf•in ±4lbf•in)
mmo2012-004-903_a
TYPICAL
1. Clamping bolt
6. Install drive belt guard.
7. Install side panel.
NOTE: This setting is correct as a pre-
liminary adjustment for most models.
In some cases, when starting the en-
gine, the vehicle co uld creep, indicat-
ing that the drive 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 m ay be harder to activate if the drive
belt is positioned too high in the driven
pulley. If reverse activation does not
work properly, ensure the drive belt is
properly adjusted. Adjust the drive belt
lower in the driven pulley if needed.
Drive Pulley (E-TEC)
Drive Pulley Adjustment
WARNING
Remove tether cord cap from en-
gine cut-off switch before perform-
ing 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 s uch 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 adjus ted
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.
NOTE: The adjustment has an effect
on high RPM only.
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