Snowmobile Arctic Cat 2-Stroke (2007 year). Instruction - part 12

 

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Snowmobile Arctic Cat 2-Stroke (2007 year). Instruction - part 12

 

 

2-34

AH283D

„NOTE: At this point, check oil-injection system
synchronization (see Section 4).

6. Connect the impulse hose to the crankcase, the

main wiring harness, the CDI unit wiring harness,

and the spark plug caps.

7. Place the recoil starter into position and secure

with four cap screws and lock washers. Tighten to

specifications.

„NOTE: If equipped with electric start, secure the
battery ground cable with the rear cap screw.

AB073

8. Place the expansion chamber and grafoil gasket

into position and secure with springs.

AB105D

9. Place the engine mount shims into position

between the torque bumper and engine mounting

bracket; then tighten the torque bumper jam nut.

10. Place the drive clutch into position on the crank-

shaft; then install the lock washer and bolt.

Tighten the clutch bolt to specifications.

CM016

„NOTE: Apply a coat of Anti-Seize Thread Com-
pound (p/n 0678-146) to the keyway end of the
driven shaft.

11. Install the driven pulley and alignment washers.

Secure with a cap screw (threads coated with blue

Loctite #243) and washer tightened to 3.3 kg-m

(24 ft-lb).

! CAUTION

When installing the carburetors, make sure the
gasline hoses are properly routed to avoid prema-
ture wear and/or contact with exhaust components.

! CAUTION

When installing the drive clutch, do not tighten the
clutch bolt with any kind of impact tool. Tighten bolt
using a hand torque wrench only. Failure to do so
could result in stationary sheave damage.

2-35

2

SC013D

„NOTE: At this point, check drive clutch/driven
pulley alignment (see Section 8).

12. Install the drive belt and secure the belt guard.

Install the plug in the belly pan.

„NOTE: If equipped with electric start, connect the
battery.

13. Turn the gas tank shut-off valve to the OPEN posi-

tion.

14. Check the ignition timing.

15. Place the rear of the snowmobile up on a shielded

safety stand. Start engine and allow to warm up.

Adjust engine idle to 1500 RPM and check all

safety switches for proper operation.

16. Test drive the snowmobile; then tighten the clutch

bolt to specifications.

Engine - 

Bearcat 570/

Panther 570/Z 570

This engine servicing sub-section has been organized

to show a progression for the complete servicing of the

Arctic Cat 570 cc engine. For consistency purposes,

this sub-section shows a complete and thorough pro-

gression; however, for efficiency it may be preferable

to remove the engine as a complete assembly, to

remove and disassemble only those components which

need to be addressed, and to service only those compo-

nents. Also, some components may vary from model

to model. The technician should use discretion and

sound judgment.

„NOTE: Critical torque specifications can be
found on pages 8-9 of this section.

„NOTE: Some illustrations and photographs used
in this section are used for clarity purposes only
and are not designed to depict actual conditions.

Table of Contents

Removing .............................................................. 2-35
Disassembling ....................................................... 2-37
Cleaning and Inspecting........................................ 2-43
Measuring Critical Components ............................ 2-47
Assembling............................................................ 2-49
Installing ................................................................ 2-56

Removing Engine

„NOTE: If equipped with electric start, disconnect
the battery.

1. Turn the gas tank shut-off valve to the CLOSED

position.

2. Open the belt guard.

3. Remove the drive belt; then remove the plug from

the belly pan.

„NOTE: Before installing the clutch puller, apply
oil to the threads of the puller and a small amount
of grease to the tip of the puller.

4. Remove the bolt and lock washer securing the

drive clutch to the crankshaft; then using the Drive

Clutch Puller (p/n 0644-207) and an impact

wrench or a breaker bar and Drive Clutch Spanner

Wrench (p/n 0644-136), tighten the puller. If the

drive clutch will not release, sharply strike the

head of the puller with a hammer. Repeat this pro-

cedure until the clutch releases.

CM006

! CAUTION

If the engine had a major overhaul or if any major
part was replaced, proper engine break-in proce-
dures must be followed.

2-36

CM007

5. Remove the clutch from the engine compartment.

6. Remove the cap screw and washer securing the

driven pulley; then slide the pulley off the driven

shaft. Account for and note the position of any

alignment washers.

„NOTE: If the driven pulley will not slide off the
driven shaft, use the Driven Pulley Puller (p/n
0744-023) for removal.

SC013D

7. Loosen the torque bumper from the engine mount.

MS367A

8. Remove the springs securing the expansion cham-

ber to the exhaust manifold and resonator; then

remove expansion chamber.

MS368

9. Remove the cap screws and lock washers securing

the recoil starter assembly; then remove the starter.

Leave it in the engine compartment.

AB082

10. Disconnect the four-prong main wiring harness

connector and the CDI unit wiring harness.

11. Disconnect the impulse hose from the crankcase.

12. Disconnect the spark plug caps.

13. Loosen the carburetor flange clamps. Remove the

carburetors from the intake flanges and carburetor

boots. Place the carburetors to the side in an

upright position.

„NOTE: If equipped with electric start, remove the
lock nut and washer securing the ground cable to
the starter motor and loosen the two Allen-head cap
screws securing the flex-drive to the starter motor;
then remove the cap screws securing the starter
motor to the chassis. Remove the starter motor.

2-37

2

MS369A

MS370A

14. Disconnect the oil-injection cable from the oil-

injection pump. Account for the E-clip and

washer; then disconnect the oil supply hose from

the pump and plug the hose to prevent leakage.

AB081

15. Remove the cap screws securing the engine to the

chassis. Account for washers, cap screws, and lock

nuts.

570-ENG07A

16. Lift the engine out of the engine compartment.

17. Remove the cap screws, washers, and lock wash-

ers securing the engine mounting brackets to the

engine; then remove the brackets.

Disassembling Engine

1. Remove the exhaust manifold. Account for the

gaskets.

2. Remove the nuts, lock washers, and washers

securing the intake flange assembly. Account for

the gaskets, insulators, and the heat deflector.

3. Remove eight cap screws securing the main fan

shroud; then remove the shroud with the recoil

starter assembly.

MD0279

„NOTE: Cap screws securing the front and rear
shrouds use special washers.

4. Remove the five cap screws securing the front

(exhaust-side) shroud to the cylinder head.

Account for the special washers.

 

 

 

 

 

 

 

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