Ski-Doo FORMULA III, Shop Manual

Page: 95 / 356

Section 04 ENGINE
Sub-Section 02 (454, 583 AND 670 ENGINE TYPES)
04-02-6
TYPICAL
1. Circlip break
CAUTION : Circlips must not move freely
after installation if so, replace them.
27, Cylinder
When reassembling the cylinders to the crank-
case, it is important to have them properly aligned
so that the cylinder head holes will match up with
the studs. Cylinder head itself can be used to align
the cylinders. Prior to torquing crankcase / cylinder
nuts, install exhaust manifold to properly align ex-
haust flanges or use exhaust flange aligning tool
(P / N 420 8769 02).
Apply Loctite 242 (P / N 413 7030 00) on cylinder
screw threads.
Install and torque screws in a criss-cross se-
quence for each cylinder to 30 N•m (22 lbf•ft). For
454 and 670 engines longer screws go on exhaust
side.
TYPICAL
A. Torque screws to 30 N•m (22 lbf•ft)
21, Gasket
583 Only
Install gasket with its larger holes on exhaust side.
EXHAUST SIDE
1. Larger holes
All Models
2, Cylinder Head Screw
1
A01C02B
-
A24C0NA
420 8769 02
ENGINE
TYPE
CYLINDER HEAD SCREWS
TIGHTENING TORQUE
454, 583
and 670
29 N•m (21 lbf•ft)
Apply grease under screw head
F01D13A
A
A
A24C07A
1