56
TROUbleshOOTINg gUIDe
Problem Cause
Engine will not start. • Blade switch is engaged.
• Steering controls are not locked in the neutral
position.
• Parking brake is not activated.
• Battery is dead.
• Contamination in the carburetor or fuel line.
• Fuel supply is closed or the tap for the fuel tank is
in the wrong position.
• Clogged fuel lter or fuel line.
• Faulty ignition system.
Lock-off not grounded or is faulty (propane)•
Regulator is faulty (propane)•
Tank fuel lines not tightened securely (propane)•
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 is pulled out with warm engine.
• Clogged fuel lter or jet.
• Clogged ventilation valve on the fuel cap.
• Fuel tank nearly empty.
• Fouled spark plug.
• Spark plug is loose.
• Rich fuel mixture or fuel-air mixture (gasoline).
• Wrong fuel type (gasoline).
• Water in the fuel (gasoline).
• Clogged air lter.
Engine seems weak. • Clogged air lter.
• Fouled spark plugs.
• Carburetor incorrectly adjusted.