Husqvarna MZ 61 Owners Manual - Page 31

TROUBLESHOOTING Problem / Cause Engine will not start Blade switch is engaged Steering controls are not locked in the neutral position Park brake is not activated Battery is dead Contamination in the carburetor or fuel line Fuel supply shutoff valve is closed Clogged fuel filter or fuel line Ignition system faulty Starter does not turn the engine over Dead battery Poor contact of the battery terminal cable connections Blown fuse Fault in the starter safety circuit. See Safety System in the Maintenance Section Engine runs rough Faulty carburetor Clogged fuel filter or jet Throttle lever in the Cold Weather starting position Clogged ventilation valve on the fuel cap Fuel tank nearly empty Fouled spark plugs 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 Air trapped in hydraulic system Machine vibrates Blades are loose Blades are incorrectly balanced Engine is loose Engine overheats Clogged air intake or cooling fins Engine overloaded Poor ventilation around engine Defective engine speed regulator Too little or no oil in the engine Contamination in the fuel line. Fouled spark plugs Battery not charging Poor contact of the battery terminal cable connections Charging lead is disconnected Fault in engine charging system Machine moves slowly, unevenly, or not at all Park brake on Bypass linkage engaged Drive belt for the transmission slack or has come off Air trapped in hydraulic system Mower deck not engaging Drive belt for the mower deck has come loose Contact for the electromagnetic coupling has loosened Blade switch is faulty or has come loose from cable contact Blown fuse Transaxle leaks oil Damaged seals, housing, or gaskets Air trapped in hydraulic system Uneven mowing results Different air pressure in tires on the left and right sides. Bent blades Suspending for the mower deck is uneven Blades are dull Driving speed too high Grass is too long Grass collected under the mower deck 31