Snowmobile Arctic Cat (2008 year). Instruction - part 7

1-23

1

1000 cc

1000_08_2

1-24

1000_07_1

1-25

1

Arctic Power Valve

(APV) System 

Specifications

„NOTE: The servo will activate once at APV cycle
RPM. If the servo cycles three times, cable length
adjustment or valve inspection is required.

„NOTE: The 800 cc and 1000 cc have a three-stage
exhaust valve system. The stages are closed, mid-
open, and full-open. Each model has a designated
RPM at which the system is synchronized and
checked by the ECU for proper operation. This
occurs once each time the engine is started. The
800 cc system is checked at 4800 RPM and the
1000 cc system is checked at 6100 RPM (Crossfire/
F-Series) or at 6270 RPM (M-Series).

741-635A

0739-715

742-209A

0735-516

APV Position/RPM

ENGINE

VALVE POSITION

CYCLE RPM

600 cc

Full-Open

73-7400 (Low/High Alt)

800 cc

Mid-Open
Full-Open

60-6500 (Low/High Alt)
78-8100 (Low/High Alt)

1000 cc

Mid-Open
Full-Open

6300 (Low/High Alt)
6500 (Low/High Alt)

F-Series

Crossfire/M-Series

(600 cc)

APV CABLE LENGTH 

ENGINE

CENTER ± 1 mm (0.039 in.)

600 cc

36.0 mm (1.417 in.)

800/1000 cc

35.0 mm (1.377 in.)

Crossfire/M-Series

(800/1000 cc)

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Oil Consumption 

Specifications

EFI Specifications

Carburetor 

Specifications

„NOTE: The above specifications are production
settings. For high altitude jetting and settings,
refer to the jet chart beneath the snowmobile
hood.

Fuel Pump 

Specifications

ENGINE

RPM

FULL-CLOSED 

(Idle)

3 Minutes

FULL-OPEN

2 Minutes

370 cc

2000

0.9-1.9 cc

4.9-6.6 cc

500 cc 

1833

1.0-2.5 cc

7.4-10.3 cc

570 cc

2000

1.4-2.2 cc

6.9-9.4 cc

600 cc 

1833

1.3-3.2 cc

10.9-15.2 cc

800 cc 

1833

2.1-4.5 cc

12.7-17.6 cc

1000 cc

1833

2.2-4.9 cc

15.8-22.0 cc

Fuel Pressure

42.8-47.3 psi

Coolant Temperature Sensor 
(Closes)

194°-206° F (90°-97° C)

Throttle Valve Angle - Volts 
(500 cc)

0.714-0.814 - Idle
3.507-4.014 - Full-Open

Throttle Valve Angle - Volts 
(600/800 cc)

0.646-0.7540 - Idle
3.472-4.0485 - Full-Open

Throttle Valve Angle - Volts 
(1000 cc)

0.595-0.695 - Idle
3.477-4.054 - Full-Open

ENGINE

TYPE

MAIN 

JET

NEEDLE JET

JET 

NEEDLE

PILOT 

JET

CUT-AWAY

PILOT AIR 

SCREW 

(TURNS OUT)

FLOAT HEIGHT

SETTING

(mm)

370 cc

VM-32

250

P-5M (953)

6DH7-3

40

2.5

1

22-24

570 cc

VM-34

220

P-4M (961)

6CE25-3

40

3.0

1 1/2

22-24

RPM

PSI

KG/CM

2

1000-2000

3.0-3.5

0.21-0.25

3000-4000

4.5-5.5

0.32-0.39

5000-6000

6.0-7.0

 0.42-0.49

VACUUM @ 2-3000 RPM

7-10 in.-hg

175-250 mm-hg