BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 279

Section 06 COMPETITION BULLETINS AND RACING PARTS
FRONT PORTION OF SUSPENSION
141 mm idler wheels
/
AO06 005046
Adjust preload of original center spring to the
stiffer position.
Replace original stopper strap with a 50 mm (2 in)
shorter one (P/ N 4860562 00).
Shock pivot can be bolted to front holes.
TRACK
Install studs on the track as per following illustra-
tion.
0
NOTE : When installing track studs, replace
both radiator protectors with higher ones
(P/ N 00) to ensure proper clearance.
4148382
CAUTION : Track studs should not inter-
fere with protectors.
WARNING : Installation of track studs is
not a safe practice recommended by Bom-
bardier, and we strongly suggest not to alter
the track configuration or design. The actual
installation of studs involves many factors, in-
cluding rider weight, suspension set-up, ter-
rain type and conditions as well as driver's
experience and preference. One must also con-
sider the adequacy of stud retention, short and
long term, accidental body or vehicle contact
and under certain conditions, greater stopping
distances. One should also consider greater
strain on the drive components and reduction
in track strength to name a few.
06-22
Additional idler
/
, ,
wheel set
/ .
A024 005032
FRONT SUSPENSION
Collapse front suspension until lower and upper
arms are horizontal. Tie suspension to limit travel
(reduced to 75 mm (3 in) in that position using
straps on shock bolts.
Replace carbide runner with standard runner
(P/ N 5050638 00).
DRIVE SYSTEM
DRIVE PULLEY
Replace original spring with a Green/ Pink (P/N
4147682 00).
Replace ramp with 145 (P/ N 4204801 45).
Install three hollow pins (P/ N 5042606 00) with
two set screws (P/ N 3652020 00)
Adjust calibration screws to third position.
Engagement speed should beat 4500 RPM.
Maximum engine RPM is 7100.
DRIVEN PULLEY
Install a 500 cam :
P / N 504136300 (MX Z 1993)
P / N 504140100 (MX 1994)
Adjust spring preload to 8.2 kg (18 lb).
per pin.