BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 327

Section COMPETITION PREPARATION
07
Transmission
events put a premium on top speed.
Snow cross events will require an excellent holeshot and also good back shifting while top
speed is not important. Use a spring and ramp combination in the drive clutch to get 5000 RPM
engagement. Lower engagement may be used if traction is less than desirable.
Maintain your clutches on a weekly basis. A clean, free moving driven pulley is important to
good backshifting. Clean the pulley faces with acetone on a regular basis.
Miscellaneous
some drivers have removed and retightened the acorn nut ,covering the schraeder valve itself,
with too much torque. When the acorn nut is later removed it may break the seal of the valve to
shock body and cause the accidental loss of the nitrogen charge. As a precaution recharge the
shock if in doubt.
If the acorn nut is removed inspect the position of the internal O-ring-style seal to ensure correct
seating. If it sits in there off-center it may prematurely release the nitrogen charge when the acorn
nut is replaced.
.
Ensure that your tether cord is a full 5 feet at extension (as per ISR rules) to avoid accidental
shutdown in minor get offs. Use a second tether cord attached to the first and adjusted for
proper length using tie raps or equivalent. This method also provides you with a handy spare.
cylinder. Dot 4 is used to reduce the chance of overheating brake fluid in race conditions. Dot 5
fluid is not recommended due to potential moisture problems associated with its formulation in
winter conditions. Do not overfill the reservoir as expansion room is required.
fix this problem simply drill out the lower attaching rivet and rerivet the latch on the outside
surface of the belly pan at the same height.
This same rubber Iatchs and button (2 sets) can be used to provide additional hood tie down points
in the area directly above the ski spindles. The fixed point could be on the bumper and the button
located on the hood itself.
order (2) rubber latch
07-16
(2) button
(2) hex. screw M5x14
P / N 570027100
P/ N 517245800
P / N 222051465