Troubleshooting - Husqvarna RZ4219 Operator's Manual

Problem / Cause
TROUBLESHOOTING
Engine will not start
Blade lever is engaged
Steering controls are not locked in neutral position
Driver is not sitting in driver's seat
Parking brake is not activated
Battery is dead
Contamination in carburetor or fuel line
Fuel supply is closed or tap for fuel tank is in wrong position
Clogged fuel filter or fuel line
Starter does not turn the engine over
• Dead battery
• Poor contacts on the battery terminal cable connections
• Fuse blown
• Ignition system faulty
• Fault in the starter safety circuit See Safety System in the Maintenance section
Engine runs rough
Faulty carburetor
Choke control used with warm engine
Cylinder head bolts are loose
Clogged fuel filter or jet
Clogged ventilation valve on fuel cap
Fuel tank nearly empty
Fouled spark plug
Spark plug is loose
Defective ignition cable
Defective spark plug electrode
Defective spark plug connection
Rich fuel mixture or fuel-air mixture
Wrong fuel type
Water in fuel
Clogged air filter
Engine seems weak
• Clogged air filter
• Fouled spark plugs
• Carburetor incorrectly adjusted
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