Ski-Doo FORMULA III, Shop Manual

Page: 193 / 356

Section 05 TRANSMISSION
Sub-Section 03 (DRIVEN PULLEY)
05-03-6
5, Spring
Spring Torsional Pre-Load
To check spring pre-load adjustment, use spring
scale hook (P / N 529 0065 00) and a spring scale.
Remove drive belt.
Install the hook on the sliding half. Preventing
fixed half from turning, pull sliding half with the
spring scale perpendicularly with pulley axle.
Take 1 st measurement when sliding half begins to
turn. Rotate sliding half to 10 mm (3/8 in) of rota-
tion. Hold fish scale at this position. Slowly re-
lease tension from fish scale and take 2
n d
measurement when sliding half begins to return.
Spring pre-load is the average measurement be-
tween these 2.
Step : 1 st measurement
Step : 2 nd measurement
To adjust spring pre-load, relocate spring end in
cam, moving it clockwise to increase the pre-load
and counterclockwise to decrease it. Refer to 10
TECHNICAL DATA.
NOTE : If spring pre-load can not be adjust-
ed, try to relocate the other end of spring in
sliding pulley (holes A, B, C).
Letters and numbers shown in illustration are ac-
tual letters and numbers embossed on parts.
NOTE : Always recheck torsional pre-load
after adjusting.
Pulley Alignment and Drive Belt
Deflection
Refer to PULLEY DISTANCE AND ALIGNMENT
05-04 and DRIVE BELT 05-01 to perform adjust-
ments.
CAUTION : Drive belt and pulley adjust-
ments must always be checked whenever
pulleys have been removed, replaced or disas-
sembled.
3, Outer Cam
Make sure to install proper cam. Refer to TECHNI-
CAL DATA.
Cam angle is identified on cam.
1 st measurement
(when opening)
+
2 nd measurement
(when closing)
=
Spring
pre-load
2
Example :
3.8 kg (8.4 lb)
(when opening) + 3.4 kg (7.5 lb)
(when closing)
=
3.6 kg (8 lb)
Actual
spring
pre-load
2
529 0065 00
A01B18A
1
2
1
2
'
A18C0AA
3 21
4
5
6
A
C
B
'
-
B
O
M
B
A
RD
IER
6
5
4
3
2
1
44
°
A24D06A