BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 218

Section 05 TRANSMISSION SYSTEM
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For drag racing and radar running, it is usually better to try to go as low as possible on the
adjusters without dropping the engine peak RPM too much as this will give the vehicle its fastest
acceleration and top speed.
For oval racing or tight sno-cross type courses, you may find you need to be one or two numbers
higher on your TRA adjuster to give the best throttle response possible out of the corners.
This will be where the winners spend their time testing different combinations of lever arm
weights, TRA adjustments, and ramp profiles until they find the best possible setup.
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