Engine Servicing - 570 Cc - Arctic Cat Sno Pro 120 Service Manual

Engine Servicing - 570 cc

This engine sub-section has been organized to show a
progression for servicing of the Arctic Cat 570 cc engine.
For consistency purposes, this sub-section shows a com-
plete and thorough progression; however, for efficiency it
may be preferable to disassemble only those components
needing to be addressed. Also, some components may
vary from model to model. The technician should use
discretion and sound judgment.
 NOTE: Critical torque specifications can be found in
Section 1 of this manual.
 NOTE: Some illustrations and photographs used in
this section are used for clarity purposes only and
are not designed to depict actual conditions.
 NOTE: Whenever a part is worn excessively, cracked,
or damaged in any way, replacement is necessary.
SPECIAL TOOLS
A number of special tools must be available to the technician
when performing service procedures in this engine section.
Description
Ball Hone
Crankshaft Bearing Remover
Flywheel Spanner Wrench
Flywheel Puller
Piston Pin Puller
Surface Plate
V Blocks
Vacuum Test Pump
 NOTE: Special tools are available from the Arctic
Cat Service Parts Department.
Disassembling
1. Remove the nuts, lock washers, and washers secur-
ing the intake flange assembly. Account for the gas-
kets, insulators, and the heat deflector.
2. Remove the five cap screws securing the front
(exhaust-side) shroud to the cylinder head. Account
for the special washers.
 NOTE: Keep the special mounting hardware with
the shrouds for assembling purposes. Cap screws
securing the front and rear shrouds use special
washers.
3. Remove the spark plug grommets.
p/n
0644-292
0144-302
0144-007
0744-040
0644-328
0644-016
0644-535
4. Using Flywheel Spanner Wrench to hold the starter
0644-131
pulley, remove the cap screw securing the flywheel
to the crankshaft and account for the flat washer and
lock washer.
5. Using Flywheel Spanner Wrench to hold the starter
pulley, remove the three cap screws securing the
starter pulley to the flywheel assembly.
MD0276
2
MD0065
MD0060
MD0282
2-63