Ski-Doo FORMULA S 1997, Shop Manual

Page: 164 / 926

Section 04 TRANSMISSION
Sub-Section 07 (CHAINCASE)
04-07-2
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, discon-
nect and remove battery from its rack.
CAUTION : Be careful not to ground posi-
tive terminal with the chassis. Always dis-
connect BLACK negative cable first.
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 04-04.
INSPECTION
Visually inspect the chain for cracked, damaged or
missing link rollers. Check for defective bearings,
sprockets and worn chain tensioner components.
WARNING : If chain deflection is greater
than 38 mm (1.5 in) (without chain ten-
sioner), replace chain and check condition of
sprockets.
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
A05D0PA
2
1
1
2
'
-
A01B1FA
1
529 0072 00
2
;