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Snowmobile Arctic Cat (2000 year). Manual - part 37

Problem: Engine Overheats

Condition

Remedy

1. Spark plug heat range too hot

1. Install lower heat-range spark plugs

2. Coolant low — absent

2. Add coolant

3. Heat exchanger obstructed

3. Remove obstruction

4. Intake flange to cylinder air leak

4. Replace — seal intake flange(s)

5. Drive system (drive clutch — driven pulley —

track — drive belt) adjusted incorrectly —
worn — damaged

5. Troubleshoot — adjust drive system

6. Rings/grooves carboned

6. Clean — replace rings — pistons

7. Exhaust ports obstructed

7. Remove obstruction

8. Expansion chamber obstructed

8. Remove obstruction

9. Oil-injection pump malfunctioning — adjusted

incorrectly

9. Replace — bleed — adjust oil-injection pump

10. Primary compression low — absent

10. Repair — replace damaged — worn engine

components

11. Gasoline octane too low

11. Use 87 minimum octane gasoline

12. Water pump — thermostat damaged — faulty

12. Replace water pump — thermostat

Problem: Engine Backfires

Condition

Remedy

1. LED trouble code

1. Service — replace problem component

2. Throttle/ignition monitor switch adjusted

incorrectly

2. Adjust throttle cable tension — service spring

3. Spark plugs fouled — damaged

3. Clean — replace spark plugs

4. High tension leads/coil shorting

4. Service — replace high tension leads/coil

5. CDI unit faulty — damaged

5. Replace ECU

6. Fuel mixture lean

6. Repair fuel regulator — injector(s)

7. Oil-injection pump malfunctioning — adjusted

incorrectly

7. Replace — bleed — adjust oil-injection pump

Problem: Engine Four-Cycles (Floods Excessively)

Condition

Remedy

1. LED trouble code

1. Service — replace problem component

2. Fuel pressure too high

2. Replace regulator — hose

3. Injector faulty

3. Replace injector

4. Throttle position sensor faulty

4. Replace throttle body assembly

5. Air-intake silencer obstructed

5. Remove obstruction

2-133

Problem: Engine Stops Suddenly

Condition

Remedy

1. Gas tank empty

1. Fill tank

2. Spark absent

2. See No Spark at Spark Plugs sub-section

3. LED trouble code

3. Service — replace problem component

4. CDI relay faulty

4. Replace CDI relay

5. Fuel filter(s) obstructed

5. Replace filter(s)

6. Fuel pressure low

6. Replace regulator — hose

7. Fuel pump faulty

7. Service — replace fuel pump

8. Fuel pump relay faulty

8. Replace relay

9. Gas tank vent hose obstructed

9. Service vent hose

10. ECU faulty

10. Replace ECU

11. Fuel hose obstructed—broken—pinched

11. Remove obstruction—repair—replace fuel hose

12. CDI unit faulty

12. Replace ECU

13. Ignition coil faulty

13. Replace ignition coil

14. Engine seized

14. Overhaul engine

15. Throttle/ignition monitor switch — throttle cable

tension faulty—adjusted incorrectly

15. Replace throttle control—adjust throttle cable

Problem: Engine Fails to Stop (Continues to Run, Even with All Switches Off)

Condition

Remedy

1. CDI unit shorted to ground

1. Replace ECU

2. Engine wiring harness connections wet

2. Clean — dry connections

2-134

Engine Information

Table of Contents

2000 Arctic Cat Engine Specifications . . . . 2-136
2000 Arctic Cat Engine Torque Specifications

2-137

Torque Conversions . . . . . . . . . . . . . . 2-137
2000 Engine Torque Patterns . . . . . . . . . 2-138
Piston Replacement Guide . . . . . . . . . . 2-139
Engine Piston Travel Versus Crank Angle Chart 2-140
Cylinder Head Volume Tests

. . . . . . . . . 2-141

Cylinder Head Volume Specifications . . . . . 2-142
Crankshaft Runout Specifications

. . . . . . 2-143

Crankshaft Repair

. . . . . . . . . . . . . . 2-144

Exhaust Gas Temperature

. . . . . . . . . . 2-145

Exhaust Gas Temperature Probe Location . . 2-146

2-135

2000 Arctic Cat Engine Specifications

@ 6000 RPM - Engine warm

@ 4000 RPM

@ 3250 RPM

@ 3500 RPM

@ 5000 RPM

@ 1800 RPM

136

ITEM

120 cc

340 cc

370 cc

440 cc (F/C)

440 cc (L/C)

500 cc Carb

500 cc EFI

550 cc

580 cc EFI

600 cc EFI

600 cc
Carb (Triple)

600 cc
Carb (Twin)

700 cc

800 cc

1000 cc

Engine Model Number

N/A

AG34A8

AA37A2

AS44A3

AL44L9

AS50L4

AT50L4

CB55L1

AD58L4

AD60L4

AA60L6

AE60L4

AB70L8

AA80L6

AA10L3

Displacement

— cc

— cu. in.

119
7.3

339
20.68

367
22.41

431
26.3

436
26.60

497
30.3

550
33.56

580
35.42

599
36.54

594
36.24

599
36.54

700
42.71

794
48.45

999
60.96

No. of Cylinders

Bore

— mm

— in.

60
2.4

60
2.362

65
2.559

68
2.677

71
2.800

73.4
2.890

75.4
2.968

78
3.071

66.5
2.618

78
3.071

81
3.19

72
2.835

81
3.19

Stroke

— mm

— in.

42
1.7

60
2.362

65
2.559

60
2.362

62.7
2.469

65
2.559

62.7
2.469

57
2.240

62.7
2.469

68
2.677

65
2.559

64.6
2.54

Compression Ratio

N/A

6.8:1

6.3:1

6.5:1

6.74:1

6.6:1

6.5:1

6.55:1

6.4:1

6.55:1

6.0:1

6.5:1

6.4:1

Cooling System

Fan Cooled

Liquid Cooled Liquid Cooled

Liquid Cooled

Gasoline Octane (min)

Fuel Mixture

N/A

Oil Injection

Ignition Timing

degrees

— mm

— in.

Fixed

1.440
0.056

1.056
0.042

2.012
0.079

1.860
0.073

3.390
0.133

3.540
0.139

5.459
0.215

2.371
0.093

3.884
0.153

3.390
0.133

4.625
0.182

0.886
0.035

1.556
0.061

Spark Plug (NGK)

BPR6ES

BR9EYA

BR10EYA

BR9EYA

BR10ES

BR9EYA

Spark Plug Gap

— mm

— in.

0.7-0.8
0.028-0.031

Lighting Coil Output

N/A

12V/185W

12V/215W

12V/210W

12V/175W

12V/180W

12V/175W

12V/210W

12V/200W

12V/185W

Ignition Type

Transistorized

CDI/NOI

Piston Skirt/Cylinder

— mm

Clearance Range

— in.

0.020-0.120
0.0008-0.0047

0.060-0.150
0.0024-0.0059

0.080-0.150
0.0031-0.0059

0.115-0.150
0.0045-0.0059

0.083-0.150
0.0033-0.0059

0.095-0.150
0.0037-0.0059

0.083-0.150
0.0033-0.0059

0.085-0.150
0.0034-0.0059

0.083-0.150
0.0033-0.0059

0.095-0.150
0.0037-0.0059

Piston Ring End

— mm

Gap Range

— in.

0.20-0.70
0.0079-0.0280

0.15-0.80
0.006-0.031

0.15-0.83
0.006-0.033

0.20-0.83
0.008-0.033

0.20-0.80
0.008-0.031

0.20-0.83
0.008-0.033

Cylinder Trueness

— mm

Limit (max)

— in.

0.1
0.004

Piston Pin

— mm

Diameter Range

— in.

14.980-14.995
0.5898-0.5904

15.995-16.000
0.6297-0.6299

17.995-18.000
0.7085-0.7087

15.995-16.000
0.6297-0.6299

17.995-18.000
0.7085-0.7087

19.995-20.000
0.7872-0.7874

17.995-18.000
0.7085-0.7087

19.995-20.000
0.7872-0.7874

Piston Pin Bore

— mm

Diameter Range

— in.

15.006-15.030
0.5908-0.5917

15.998-16.006
0.6298-0.6302

17.998-18.006
0.7086-0.7089

15.996-16.004
0.6298-0.6301

17.998-18.006
0.7086-0.7089

20.002-20.010
0.7875-0.7878

18.002-18.008
0.7087-0.7090

20.002-20.010
0.7875-0.7878

Connecting Rod Small — mm

End Bore Diameter

— in.

Range

15.006-15.030
0.5908-0.5917

21.003-21.011
0.8269-0.8272

23.003-23.011
0.9056-0.9059

21.003-21.011
0.8269-0.8272

23.003-23.011
0.9056-0.9059

26.003-26.011
1.0237-1.0241

23.003-23.011
0.9056-0.9059

26.003-26.011
1.0237-1.0241

Connecting Rod

— mm

Radial Play Range

— in.

0.015-0.070
0.0006-0.0028

0.02-0.03
0.0008-0.0012

Crankshaft Runout

— mm

(t.i.r.)

— in.

0.10
0.004

0.05
0.002

Crankshaft End

— mm

Play Range

— in.

0.05-0.10
0.002-0.004

Reed Stopper

— mm

Height

— in.

N/A

9.4 - 9.8
0.370 - 0.385

9.4-9.8
0.370-0.385

N/A

9.4 - 9.8
0.370 - 0.385

9.3 - 9.9
0.366 - 0.389

9.4 - 9.8
0.370 - 0.385

8.6 - 9.0
0.338 - 0.354

6.7 - 7.3
0.263 - 0.287

9.3 - 9.9
0.366 - 0.389

Content .. 35 36 37 38 ..