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Section 02 TROUBLESHOOTING Subsection 01 (ENGINE) ENGINE The following chart is provided to help diagnose the probable source of troubles. It should be used as a NOTE: For engine management system troubleshooting (SDI and Power Tek engines), refer to appropri- SYMPTOM ENGINE BACKFIRES. CONDITION NORMAL USE. 1. Check spark plugs. a. 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. a. Timing is too advanced. Set timing according to specifications (refer to TECHNICAL DATA). 3. Check for erratic sparks. a. Poor electrical connections. Repair. b. Faulty stator. Replace defective parts. 4. Check carburetor. a. Fuel passages obstructed. Clean carburetor and install new filter(s). b. Fuel level too low. Adjust float level according to specifications. TEST/INSPECTION 5. Check cooling system. a. Low antifreeze level. Adjust antifreeze level. Proceed with a leakage test (refer to COOLING SYSTEM) and repair as required. b. Defective tank cap. Replace cap. c. Defective thermostat. Replace thermostat. d. Air in system. Bleed system. SYMPTOM ENGINE SUDDENLY TURNS OFF AT HIGH RPM AND/OR WITH LIGHT LOAD. CONDITION NORMAL USE. TEST/INSPECTION 1. Check spark plugs. a. Non-resistor type spark plugs installed. 2. Check that all 3 ground wires are well connected. a. Loose or corroded ground. mmr2005-063 9 |