Primary Clutch Torque Procedure
Copied and Pasted from the service manual CD:

Primary Clutch Torque Procedure
INSTALLATION

WARNING
-Do not apply antiseize or any lubricant on
crankshaft and drive pulley tapers.


WARNING
-Never use any type of impact wrench at drive
pulley removal and installation.

-Clean mounting surfaces (FYI...use a non-residue cleaner such as brake cleaner, etc)

Drive Pulley Asembly (I know it is spelled wrong, but the bad language edit thing doesn't allow the two s's after the a)
-The following installation procedure must be
strictly adhered.
-Install drive pulley on crankshaft extension.
-Install a new conical spring washer with its
concave side towards drive pulley then install drive
pulley bolt.


WARNING
-Never substitute conical spring washer
and/or bolt with jobber ones. Always use
BRP genuine parts for this particular case.

-Use the drive pulley holder (P/N 529 035 674). See
removal procedure.
-Torque screw to 90 N-m (66 lbf-ft).
-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 vehicle.

-Accelerate the vehicle at low speed (maximum
30 km/h (20 MPH)) and apply the brake, repeat 5
times.
-Retorque screw to 95 N-m (70 lbf-ft).


WARNING
-After 10 hours of operation the transmission
system of the vehicle must be inspected
to ensure the retaining screw is properly
torqued.

*So that's the long version*
Here is the short version:
-Install clutch on crankshaft end.
-Thread holddown bolt with washer into crankshaft to hold clutch on crankshaft
-Torque bolt to 66 ftlbf
-Raise back of sled and accelerate track to about 20 MPH then grab the brake. Repeat about 5 times.
-Retorque clutch bolt to 70 ftlbf
-After 10 hours of operation re-torque clutch bolt to 70 ftlbf.

Jerry C