Ski-Doo Formula S 1998, Shop Manual

Page: 81 / 338

Section 04 ENGINE
Subsection 02 (277 ENGINE TYPE)
04-02-6
Remove piston pin puller and expansion sleeve.
When installing new needle bearing, insert nee-
dles with thrust washers. Instead of expansion
sleeve, needles are held in place by 2 inner plastic
cage halves.
Use piston pin puller (P/N 529 0290 00) to insert
piston pin. Plastic halves should come off piston.
If not, pull them using a long nose pliers.
To minimize the effect of acceleration forces on
circlip, install each circlip so the circlip break is at
6 o’clock as illustrated. Use piston circlip installer
(P/N 529 0169 00).
1. Place circlip in
2. Restrain
3. Oil
1. Piston notch
2. Circlip break
Before inserting piston in the cylinder, lubricate
the cylinder with new injection oil or equivalent.
Position cylinder head on cylinder with fins in line
with crankshaft center line. Cross torque retaining
nuts to 26 N•m (19 lbf•ft).
A21C01A
A01B1QA
1
2
3
529 0169 00
-
CAUTION
Circlips must not move freely in the groove
after installation. If so, replace them.
1
2
A01C02A