Chassis Tuning Guidelines; How To Deal With Handling Problems; Guide To Handling Problems - BOMBARDIER 1996 Ski-doo MX Z440 Handbook

Section 03 CHASSIS PREPARATION
With the aggressive setup of the front end necessary for competitive oval racing, it is important to
keep all the steering system components tight and free of play. Worn ball joints and bushings
should be replaced, bolts holding the skis to the ski leg must be tight and wear bars must be
straight and bolted securely to the skis. Any play in the steering will result in severe chattering in
the corners and darting on the straightaways.

CHASSIS TUNING GUIDELINES

HOW TO DEAL WITH HANDLING PROBLEMS

There is usually never one adjustment that will correct a certain handling quirk. You will usually
end up with several changes in setup to achieve the same goal. There are certain basics to keep in
mind, however, when you are working with your sled :
1. Handling problems encountered when entering a corner are usually corrected by working with
front end adjustments.
2. Handling problems encountered when exiting a corner are usually corrected by working with
rear suspension adjustments.
3. Basic handling problems are often traced to improper suspension adjustments.

GUIDE TO HANDLING PROBLEMS

NOTE : "PUSHING" refers to the front of a vehicle not steering as much as the driver wants.
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The skis are not grabbing the surface with sufficient force. "LOOSE" refers to the rear of a
vehicle sliding outward in a turn. The track is not grabbing the surface with sufficient force.
NOTE : Center spring/ shock refers to the front arm of the rear suspension.
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1. Problems encountered when entering a corner.
A. Front end pushes coming into a corner. (Steering is not precise).
1. Sharpen carbide runners.
2. Add more carbide.
3. Shorten limiter strap on center arm.
4. Increase negative camber of ski legs.
5. Increase ski spring preload.
6. Decrease center spring preload.
B. Rear of machine starts to come around or is loose when entering a corner.
1. Lengthen limiter strap on center arm.
2. Decrease ski spring preload.
3. Decrease negative camber of ski legs.
4. Increase center spring preload.
5. Sharpen/ add track studs.
C. Inside ski lifts.
1. Reduce the amount of negative camber on the ski legs.
2. Check for free operation of stabilizer bar.
3. Decrease preload of ski springs.
4. Shorten limiter strap on center arm.
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