Ski-Doo Ski Doo GSX 2005 [1231/1429] Drive pulley adjustment

Ski-Doo Ski Doo GSX 2005 [1231/1429] Drive pulley adjustment
Section 07 TRANSMISSION
Subsection 02 (DRIVE PULLEY)
WARNING
Never substitute conical spring washer
and/or screw with jobber ones. Always use
BRP genuine parts for this particular case.
Use holder. See removal procedure.
TRA III
Torque screw to 80 to 100 Nm(59to74lbfft).
TRA IV
Torque screw to 125 to 135 Nm (92 to 100 lbfft).
All Models
Install drive belt and guard.
Raise and block the rear of the vehicle and support
it with a mechanical stand.
WARNING
Ensure that the track is free of particles which
could be thrown out while track is rotating.
Keep hands, tools, feet and clothing clear of
track. Ensure nobody is standing near the ve-
hicle.
Accelerate the vehicle at low speed (maximum
30 km/h (20 MPH)) and apply the brake, repeat 5
times.
TRA III
Retorque screw to 90 to 100 Nm (66 to 74 lbfft).
TRA IV
Retorque screw to 125 to 135 Nm(92to
100 lbfft).
WARNING
After 10 hours of operation the transmission
system of the vehicle must be inspected
to ensure the retaining screw is properly
torqued.
DRIVE PULLEY ADJUSTMENT
TRA III
The drive pulley is factory calibrated to transmit
maximum engine power at a predefined RPM.
Factors such as ambient temperature, altitude
or surface condition may vary this critical engine
RPM thus affecting snowmobile efficiency.
This adjustable drive pulley allows setting maxi-
mum engine RPM in the vehicle to maintain max-
imum power.
Calibration screws should be adjusted so that ac-
tual maximum engine RPM in vehicle matches the
maximum horsepower RPM given in TECHNICAL
DATA.
NOTE: Use precision digital tachometer for engine
RPM adjustment.
NOTE: The adjustment has an effect on high RPM
only.
To adjust, modify ramp end position by turning cal-
ibration screws.
TRA IV
From factory TRA drive pulley adjustment screws
are set to position 3. This position allows the best
compromise between acceleration, top speed and
fuel economy.
Position 1 or 2 would provide the best fuel econo-
my. Top speed would be reduced.
Position 4 would give the best acceleration. Fuel
economy would be reduced.
26,28,29, Calibration Screw, Locking
Nut and Governor Cup
Calibration screw has a notch on top of its head.
A16D0FA
1
1. Notch
Governor cup has 6 positions numbered 2 to 6.
Note that in position 1 there is no stamped number
(due to its location on casting).
See TECHNICAL DATA for original setting.
mmr2005-035 367

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