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2
Troubleshooting Engine
(4-Stroke)
Problem: Engine Overheats
Condition
Remedy
1.
Spark plug heat range
too hot
2.
Coolant
low — absent
3.
Heat exchanger
obstructed
4.
Intake flange to cylinder air
leak
5.
Drive system (drive clutch — driven pulley — track —
drive belt)
adjusted incorrectly — worn — damaged
6.
Rings/grooves
carboned
7.
Exhaust ports
obstructed
8.
Expansion chamber
obstructed
9.
Oil-injection pump
malfunctioning — adjusted incorrectly
10.
Primary compression
low — absent
11.
Gasoline octane
too low
12.
Water pump — thermostat
damaged — faulty
1. Install lower heat-range spark plugs
2. Add coolant
3. Remove obstruction
4. Replace — seal intake flange(s)
5. Troubleshoot — adjust drive system
6. Clean — replace rings — pistons
7. Remove obstruction
8. Remove obstruction
9. Replace — bleed — adjust oil-injection pump
10. Repair — replace damaged — worn engine components
11. Use recommended minimum octane gasoline
12. Replace water pump — thermostat
Problem: Engine Does Not Start (No Spark at Spark Plugs)
Condition
Remedy
1.
Ground connections
dirty — loose
2.
Wiring harness
shorting — disconnected
3.
Emergency stop switch
in DOWN position — malfunc-
tioning
4.
Throttle/ignition monitor switch
malfunctioning
5.
Spark plugs
fouled — damaged
6.
Idle speed control (ISC valve)
not functioning
7.
ECU
faulty
8.
Ignition timing sensor
faulty
1. Check all ground connections — clean and tight
2. Repair — replace — connect wiring harness
3. Move switch to UP position — replace throttle control
4. Adjust throttle cable tension — replace throttle body
assembly
5. Clean — replace spark plugs
6. Turn ignition switch ON and OFF — listen for stepping
motor (ISC valve) operation
7. Replace ECU
8. Replace sensor
Problem: Engine Does Not Start (No Fuel at Cylinders)
Condition
Remedy
1.
Gas tank
empty
2.
Gasoline
contaminated
3.
Fuel pump
faulty
4.
Fuel hose
broken — pinched
5.
Gas-tank vent
—
hose
obstructed
6.
Pick-up valve(s)
obstructed — damaged
7.
Compression
absent
8.
ECU
faulty
1. Fill tank
2. Replace gasoline
3. Service — replace fuel pump — connections — wires
4. Replace — service hose
5. Remove obstruction — replace vent — hose
6. Remove obstruction — replace pick-up valve(s)
7. Repair — replace damaged — worn engine components
8. Replace ECU
Problem: Engine Does Not Start (Fuel Does Not Ignite)
Condition
Remedy
1.
ECU Check Engine light
failed
2.
Spark
absent
3.
Compression
low
4.
Engine
flooded
5.
Gasoline
contaminated
1. Check codes — repair as necessary
2. Check for spark — see No Spark at Spark Plugs sub-sec-
tion
3. Service engine
4. Clear engine (hold throttle full-open)
5. Clean tank and entire fuel system
Problem: Engine Does Not Idle
Condition
Remedy
1.
ECU
trouble code
2.
Throttle cable
too tight
3.
Injector(s)
faulty
4.
Fuel pressure regulator
faulty
5.
Air silencer
obstructed
6.
ISC valve
faulty
1. Service — replace problem component
2. Adjust throttle cable to specifications*
3. Replace injector(s)
4. Replace regulator — hose
5. Clean air silencer
6. Replace valve
Содержание Sno Pro 120
Страница 20: ...1 18 NOTES ...
Страница 29: ...2 9 2 570ENG12 ...
Страница 39: ...2 19 2 500CC2A_12 ...
Страница 45: ...2 25 2 NOTES ...
Страница 47: ...2 27 2 800_12_2 ...
Страница 61: ...2 41 2 Engine Torque Patterns 1100 cc 1100TorquePattern12 ...
Страница 63: ...2 43 2 1100ccZ1RV10 ...
Страница 81: ...2 61 2 1100ccZ1RV10 ...
Страница 82: ...2 62 Engine Torque Patterns 1100 cc 1100TorquePattern12 ...
Страница 141: ...2 121 2 SNO2152 ...
Страница 142: ...2 122 SNO2153 ...
Страница 180: ...3 18 0742 314 0746 520 F5 LXR 800 cc ...
Страница 204: ...3 42 NOTES ...
Страница 260: ...5 26 Troubleshooting Servomotor SERVO1A12 ...
Страница 261: ...5 5 27 SERVO2rv ...
Страница 264: ...Magneto 0746 255 1 ...
Страница 265: ...Main Harness p n 1686 600 F570 p n 1686 601 Bearcat 570 T570 p n 1686 612 Bearcat 570 XT 0746 237 2 ...
Страница 266: ...Main Harness p n 1686 603 F5 LXR 0746 249 3 ...
Страница 269: ...Main Harness p n 1686 588 F 800 M 800 XF 800 0746 242 6 ...
Страница 270: ...Main Harness p n 1686 611 TZ1 Turbo LXR LTD 0746 253 7 ...
Страница 271: ...Main Harness p n 1686 610 TZ1 TZ1 LXR 0746 252 8 ...
Страница 272: ...Main Harness p n 1686 613 Bearcat Z1 XT GS p n 1686 615 Bearcat Z1 XT LTD 0746 511 9 ...
Страница 273: ...Main Harness p n 1686 578 Sno Pro 120 10 0744 204 ...
Страница 274: ...Ignition Main Harness p n 1686 628 Sno Pro 500 11 0745 605 ...
Страница 275: ...Ignition Main Harness p n 1686 657 Sno Pro 600 12 0746 250 ...
Страница 276: ...0745 601 13 Console Harness p n 1686 631 TZ1 LXR TZ1 Turbo LXR LTD ...
Страница 277: ...Hood Harness p n 1686 638 F 800 M 800 XF 800 0746 243 14 ...
Страница 278: ...Console Harness p n 1686 633 Bearcat 570 F570 T570 0746 238 15 ...
Страница 279: ...Console Harness p n 1686 634 F5 LXR 0746 240 16 ...
Страница 280: ...Hood Harness p n 1686 639 F 1100 Turbo M 1100 Turbo HCR XF 1100 Turbo 0746 246 17 ...
Страница 281: ...Hood Harness p n 1686 658 Sno Pro 600 Cross Country p n 1686 664 Sno Pro 600 Sno Cross 18 0746 251 ...
Страница 282: ...0746 254 19 Console Harness p n 1686 547 Bearcat Z1 XT GS p n 1686 549 Bearcat Z1 XT LTD TZ1 ...
Страница 283: ...Hood Harness p n 1686 587 Sno Pro 500 20 0744 201 ...
Страница 284: ...Handlebar Harness p n 1686 652 TZ1 LXR Turbo LXR LTD p n 1686 653 Bearcat Z1 XT GS LTD 0746 513 21 ...
Страница 285: ...Passenger Seat Harness p n 1686 570 22 0744 197 ...
Страница 286: ...Handlebar Harness p n 1686 636 F 800 M 800 XF 800 p n 1686 654 M 800 HCR 0746 244 23 ...
Страница 287: ...Handlebar Harness p n 1686 537 Bearcat 570 F570 T570 0746 239 24 ...
Страница 288: ...Handlebar Harness p n 1686 574 F5 LXR 0744 189 25 ...
Страница 289: ...Handlebar Harness p n 1686 637 F 1100 Turbo M 1100 Turbo XF 1100 Turbo 0746 247 26 ...
Страница 290: ...Handlebar Harness p n 1686 590 Sno Pro 500 27 0744 200 ...
Страница 291: ...Handlebar Harness p n 1686 656 M 1100 Turbo Sno Pro HCR 28 0746 510 ...
Страница 292: ...Misc Groomer Special p n 1686 645 p n 1686 646 p n 1686 647 p n 1686 648 29 0746 241 ...
Страница 460: ...8 26 0744 930 ...