Arctic Cat ATV 250 Utility 2009, Руководство по обслуживанию

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Problem: Engine runs poorly at high speed
Condition Remedy
1. High RPM “cut out” against RPM limiter
2. Valve springs weak
3. Valve timing out of adjustment
4. Cams - rocker arms worn
5. Spark plug gap too narrow
6. Ignition coil defective
7. Float level too low
8. Air cleaner element obstructed
9. Fuel hose obstructed
1. Shift into higher gear - decrease speed
2. Replace springs
3. Adjust timing
4. Replace cams - arms
5. Adjust gap
6. Replace ignition oil
7. Adjust float height
8. Clean element
9. Clean - prime hose
Problem: Exhaust smoke dirty or heavy
Condition Remedy
1. Oil (in the engine) overfilled - contaminated
2. Piston rings - cylinder worn
3. Valve guides worn
4. Cylinder wall scored - scuffed
5. Valve stems worn
6. Stem seals defective
7. Air cleaner element obstructed
8. Float level too high
1. Drain excess oil - replace oil
2. Replace - service rings - cylinder
3. Replace guides
4. Replace - service cylinder
5. Replace valves
6. Replace seals
7. Clean element
8. Adjust float level
Problem: Engine lacks power
Condition Remedy
1. Valve clearance incorrect
2. Valve springs weak
3. Valve timing out of adjustment
4. Piston ring(s) - cylinder worn
5. Valve seating poor
6. Spark plug fouled
7. Rocker arms - shafts worn
8. Spark plug gap incorrect
9. Carburetor jets obstructed
10. Float level out of adjustment
11. Air cleaner element obstructed
12. Oil (in the engine) overfilled - contaminated
13. Intake manifold leaking air
14. Cam chain worn
1. Adjust clearance
2. Replace springs
3. Adjust timing
4. Replace - service rings - cylinder
5. Repair seats
6. Clean - replace plug
7. Replace arms - shafts
8. Adjust gap - replace plug
9. Clean jets
10. Adjust float height
11. Clean element
12. Drain excess oil - change oil
13. Tighten - replace manifold
14. Replace cam chain
Problem: Engine overheats
Condition Remedy
1. Carbon deposit (piston crown) excessive
2. Oil low
3. Octane low - gasoline poor
4. Oil pump defective
5. Oil circuit obstructed
6. Gasoline level (in float chamber) too low
7. Intake manifold leaking air
8. Coolant level low
9. Fan malfunctioning
10. Fan switch malfunctioning
11. Thermostat stuck - closed
12. Radiator hoses - cap damaged - obstructed
1. Clean piston
2. Add oil
3. Drain - replace gasoline
4. Replace pump
5. Clean circuit
6. Adjust float height
7. Tighten - replace manifold
8. Fill - examine system for leaks
9. Check fan fuse - replace fan
10. Replace fan switch
11. Replace thermostat
12. Clear obstruction - replace hoses
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