BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 231

To change the spring tension, relocate the spring end in the sliding pulley half or reposition the
spring end in the cam.
There are six holes available on a Formula cam. They are numbered 1-6. Most Formula driven
pulleys have three adjustment holes in the sliding half. They are lettered A, B, C. When adjusting
driven pulley tension, always refer to the tension in kg (lb)—not B-6 or A-5 hole positions for
accuracy and repeatability. Moving the spring from one numbered hole to a hole adjacent will
change the preload by 1.35 -1.8 kg (3-4 lb). Remember, use the number and letters as references—
measure the tension for accuracy. By using various combinations, the preload is adjustable from 5
to 35 pounds (depending on spring type) .-
We have three different driven pulley springs available that fit the Formula and Blizzard driven
pulleys. By experimenting with them, -you m~y find a more efficient combination of minimum side
pressure yet adequate back shifting for your particular racing application .
Color
Black
Orange
Beige
Section 05 TRANSMISSION SYSTEM
Wire Diameter
.177 in
.187 in
.207 in
Part Number
414338500
414505800
414558900
05-27