Husqvarna ZTHKW4818A - Manual (Page 14)

14
TROUBLE SHOOTING
PROBLEM POSSIBLE CAUSES
Engine won’t start
Mower will not move
or moves slowly or hard
1. Blade switch on.
2. Drive levers not in the neutral slots.
3. Operator not in seat.
4. Park brake disengaged.
5. Dead battery or cable off.
....(Ignition switch left on)
6. Fuel valve closed or in the wrong position.
7. No fuel.
8. Spark plug wires off.
9. Bad spark plugs.
1. Park brake on.
2. Pump bypass valves open.
3. Pump drive belt loose or off.
4. Hydraulic system failure.
5. Air in the hydraulic system.
Blades won’t engage
Uneven cut
Cut is ragged
Mower moves when
in neutral position
Mower pulls left or right
When a problem occurs, do not overlook the simple causes.
For example, no fuel or battery disconnected when the engine will not start.
1. Tire pressure uneven.
2. Motion control linkage adjustment.
3. Soft terrian.
4. Slope too steep.
1. Motion control linkage out of adjustment.
2. Pump arms loose or out of adjustment.
3. Park brake out of adjustment.
1. Blades dull.
2. Ground speed too fast.
3. Grass accumulation under deck.
1. Tire pressure uneven. (15 psi all tires)
2. Blades bent (check tip to tip one blade thickness)
3. Air foil of blade worn or bent.
4. Deck not level.
1. Blade belt off of pulleys.
2. Clutch unhooked from harness.
3. Blade switch failure.
4. Fuse burnt out.