BRP Ski-doo Tundra Series, Operator'S Manual

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MAINTENANCE PROCEDURES
NOTE: These settings are correct as a
preliminary adjustment for most mod-
els. In some cases, when starting the
engine, the vehicle could creep, indi-
cating 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 if
the 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
Drive Pulley Adjustment
600 HO E-TEC Models
WARNING
Remove the tether cord cap and
key before performing any adjust-
ment. 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.
NOTE: The adjustment has an effect
on high RPM only.
There are 6 positions numbered 1 to 6.
The calibration screws have 6 different
settings identified by numbers scribed
on their head.
The actual setting is the screw head
number aligned with the mark on the
pulley.
mmo2011-002-101_a
PULLEY SETTING
1. Mark
2. Number
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 screws initially set at posi-
tion 4 and changed to position 6 will
increase maximum engine RPM by
400 RPM.
Procedure
Loosen the lock nut just enough to get
the calibration screw head out of the
pulley and rotate to the desired posi-
tion.
NOTE: Do not completely remove the
lock nut.
Set all 3 calibration screws to the same
position.
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