Ski-Doo Formula S 1998, Shop Manual

Page: 190 / 338

Section 05 TRANSMISSION
Subsection 07 (CHAINCASE)
05-07-2
REMOVAL
Chaincase and driven pulley can be removed from
the vehicle as an assembly.
Remove belt guard and drive belt.
Unlock and raise driven pulley support.
Step : Push and hold
Step : Raise support
NOTE: On electric starting model, disconnect and
remove battery from its rack.
Remove chaincase cover no. 21 and drain oil.
Pry out drive axle from chaincase.
Unscrew the nut no. 14 on the upper sprocket
no. 12 and remove circlip no. 17 on the bottom
one no. 16 . Remove chain tensioner assembly
nos. 2 to 6 , then simultaneously remove chain
no. 18 and both sprockets.
Remove the 4 cap screws no. 26 securing chain-
case to frame. Save alignment shims no. 8 for in-
stallation.
Release track tension, use drive axle holder (P/N
529 0072 00).
1. Drive axle
2. Suspension cross shaft
Chaincase and Driven Pulley Assembly
Using 2 large screwdrivers inserted between
chaincase and frame, pry complete assembly
from vehicle.
DISASSEMBLY
Disassemble driven pulley from chaincase. Refer
to DRIVEN PULLEY 05-04.
INSPECTION
Visually inspect the chain for cracked, damaged or
missing link rollers. Check for defective bearings,
sprockets and worn chain tensioner components.
GEAR RATIO MODIFICATION
For particular applications, the number of teeth of
the sprockets can be increased or decreased on
lower and upper sprockets.
Available lower sprocket: 27 teeth.
Available upper sprockets: 11, 12, 15 teeth.
Available chains: 62, 64 links.
-
CAUTION
Be careful not to ground positive terminal
with the chassis. Always disconnect BLACK
negative cable first.
A05D0PA
2
1
1
2
;
WARNING
If chain deflection is greater than 38 mm (1.5
in) (without chain tensioner), replace chain
and check condition of sprockets.
A01B1FA
1
529 0072 00
2