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Просмотр инструкции снегоходы Ski Doo MX Z 2005, страница 887
Section 02 TROUBLESHOOTING GUIDE
Subsection 01 (ENGINE (2-STROKE))
ENGINE (2-STROKE)
The following chart is provided to help diagnose the probable source of troubles. It should be used as a
guideline. Some causes or corrections may not apply to a specific model.
Symptom:
ENGINE BACKFIRES.
1. Check spark plugs.
- Carbon accumulation caused by defective spark plug(s). Clean carbon accumulation from piston
and cylinder head and install dry properly gapped spark plug(s).
2. Check ignition timing.
- Timing is too advanced. Set timing according to specifications (refer to TECHNICAL DATA).
3. Check for erratic sparks.
- Poor electrical connections. Repair.
- Faulty stator. Replace defective parts.
4. Check carburetor.
- Fuel passages obstructed. Clean carburetor and install new filter(s).
- Fuel level too low. Adjust float level according to specifications.
5. Check cooling system.
Fan-Cooled Engines
- Loose fan belt. Adjust or replace fan belt (refer to AXIAL FAN COOLING SYSTEM).
- Dirty cooling fins or blocked air ducts. Clean.
Liquid-Cooled Engines
- Low antifreeze level. Adjust antifreeze level. Proceed with a leakage test (refer to LIQUID
COOLING SYSTEM) and repair as required.
- Defective tank cap. Replace cap.
- Defective thermostat. Replace thermostat.
- Air in system. Bleed system.
Symptom: ENGINE SUDDENLY TURNS OFF AT HIGH RPM AND/OR WITH LIGHT LOAD.
1. Check that all ground wires are well connected.
Symptom: ENGINE SUDDENLY TURNS OFF.
1. Perform engine leak test. Check possible piston seizure.
- Damaged gasket and/or seal. Replace defective parts.
2. “Four-corner” seizure of piston(s).
- High acceleration when engine is cold. Piston expands faster than cylinder. Replace piston(s).
Ask driver to refer to the warm-up procedure in the Operator's Guide.
mmr2005-005 9
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