Husqvarna SM 400, Workshop Manual

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C.9
Part. N. 8000 A2925 (03-2004)
INCONVENIENTI E RIMEDI
TROUBLES AND REMEDIES
INCONVENIENTES ET REMEDES
STOERUNGEN UND BEHEBUNGEN
INCONVENIENTES Y REMEDIOS
BOZZA DRAFT
ELECTRICS
Trouble Cause Remedy
Spark plug becomes dirty 1. Mixture too rich Adjust carburettor
too frequently 2. Air filter dirty Clean
3. Piston rings worn Replace
4. Piston or cylinder worn Replace
Spark plug overheats 1. Mixture too lean Adjust carburettor
2. Spark plug gap too small Adjust
3. Too high heat rating Replace the spark plug
Generator charging too low 1. Wires to voltage regulator connected incorrectly
or not at all or short circuiting Connect correctly or replace
2. Faulty voltage regulator Replace
3. Generator coil faulty Replace
Generator charging too 1. Voltage regulator faulty Replace
high
Battery corrosion 1. Charging voltage too high or too low Replace the battery
(when not in use the battery should be
recharged at least once a month)
2. Too much or too little battery fluid
Return to correct level
3. Incorrect specific gravity Replace electrolytic fluid
The battery is discharged fast 1. Battery terminals dirty Clean
2. Battery fluid low Top up with
distilled water
3.Impurities in battery fluid or specific Replace electrolytic fluid
density too high
Start motor won't start or slips 1. Battery flat Recharge
2. Control button on right hand switch Replace
unit faulty
3. Starter relay faulty
Replace
4. Starter motor faulty Repair or replace
5. Starter gears worn Replace