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Section 03 TROUBLESHOOTING Subsection 04 (ELECTRICAL SYSTEM) ELECTRICAL SYSTEM The following chart is provided to help diagnose the probable source of troubles. It should be used as a SYMPTOM STARTER DOES NOT TURN. CONDITION NORMAL USE 1. Check fuse. a. Burnt fuse. Check wiring condition and replace fuse. 2. Check continuity of starter switch contact points. a. Poor contact of starter switch contact points. Repair or replace switch. 3. Check continuity between starter switch and MPEM on liquid-cooled models. a. Open circuit. Repair. TEST/INSPECTION 4. Check continuity between MPEM and solenoid switch. a. Open circuit. Repair. SYMPTOM STARTER TURNS BUT DOES NOT CRANK THE ENGINE. CONDITION NORMAL USE 1. Check battery capacity. a. Shorted battery cell(s). Replace. 2. Check battery charge. a. Low battery. Recharge battery and check recharge system and wires. 3. Check wire connection. a. Inadequate connection (too much resistance). Clean and reconnect. 4. Check solenoid switch contact disc. a. Burnt or poor contact of solenoid switch contact disc. Replace solenoid switch. 5. Check brushes. a. Poor contact of brushes. Replace brushes. TEST/INSPECTION 6. Check commutator. a. Burnt commutator. Machine commutator on a lathe. Respect outer diameter wear limit. Refer to ELECTRIC STARTER. mmr2004-Rev 61 |