2-140
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 incor-
rectly
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-
section
3. Service engine
4. Clear engine (hold throttle full-open)
5. Clean tank and entire fuel system
Manual
Table of Contents
Содержание Sno Pro 120 2011
Страница 15: ...1 13 1 1000 cc BTDC 14 1800 RPM 0 057 0744 034 Manual Table of Contents...
Страница 25: ...1 23 1 570ENG09 Manual Table of Contents...
Страница 27: ...1 25 1 500CC2A_10 Manual Table of Contents...
Страница 29: ...1 27 1 600CC2A_11 Manual Table of Contents...
Страница 31: ...1 29 1 800_11_2 Manual Table of Contents...
Страница 33: ...1 31 1 1000_10_1 Manual Table of Contents...
Страница 35: ...1 33 1 1100ccZ1RV10 Manual Table of Contents...
Страница 36: ...1 34 Engine Torque Patterns 1100 cc 1100TorquePattern Manual Table of Contents...
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Страница 293: ...5 32 Troubleshooting Servomotor SERVO1Arv Manual Table of Contents...
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Страница 298: ...Main Harness p n 1686 603 F5 LXR 0745 595 3 Table of Contents Manual Diagram Table of Contents...
Страница 299: ...Main Harness p n 1686 598 Crossfire 6 M6 0745 596 4 Table of Contents Manual Diagram Table of Contents...
Страница 300: ...Main Harness p n 1686 604 F6 Sno Pro 0745 597 5 Table of Contents Manual Diagram Table of Contents...
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Страница 320: ...Ignition Main Harness p n 1686 629 Sno Pro 600 25 0745 606 Table of Contents Manual Diagram Table of Contents...
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