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Does not start 1. Dirty air fi lter. 1. Clean/replace air fi lter.
2. Out of fuel. 2. Fill fuel tank.
3. Stale fuel. 3. Drain fuel tank and refi ll tank
with fresh, clean gasoline.
4. Water in fuel. 4. Drain fuel tank and refi ll tank
with fresh, clean gasoline.
5. Spark plug wire is disconnected. 5. Connect wire to plug.
6. Bad spark plug. 6. Replace spark plug.
7. Loose blade or broken blade adapter. 7. Tighten blade bolt or replace adapter.
8. Control bar in released position. 8. Depress control bar to handle.
9. Control bar defective. 9. Replace control bar.
10. Fuel valve lever (if so equipped) 10. Turn fuel valve lever to the ON position.
is in the OFF position.
11. Weak battery (if equipped). 11. Charge battery.
12. Disconnected battery connector (if equipped). 12. Connect battery to engine.
13. Engine control lever is 13. Place engine control lever
in STOP position. in FAST position.
Loss of power 1. Rear of lawn mower housing or 1. Raise cutting height.
cutting blade dragging in heavy grass.
2. Cutting too much grass. 2. Raise cutting height.
3. Dirty air fi lter. 3. Clean/replace air fi lter.
4. Buildup of grass, leaves, trash under mower. 4. Clean underside of mower housing.
5. Too much oil in engine. 5. Check oil level.
6. Walking speed too fast. 6. Cut at slower walking speed.
Poor cut – 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade bolt.
uneven 2. Wheel heights uneven. 2. Set all wheels at same height.
3. Buildup of grass, leaves, trash under mower. 3. Clean underside of mower housing.
Excessive 1. Worn, bent or loose blade. 1. Replace blade. Tighten blade bolt.
vibration 2. Bent engine crankshaft. 2. Contact a qualifi ed service center.
Starter rope 1. Engine fl ywheel brake is on 1. Depress control bar to upper handle
hard to pull when control bar is released. before pulling starter rope.
2. Bent engine crankshaft. 2. Contact a qualifi ed service center.
3. Blade adapter broken. 3. Replace blade adapter.
4. Blade dragging in grass. 4. Move mower to cut grass / hard surface.
5. Defective blade/brake clutch. 5. Replace blade/brake clutch.
Grass catcher 1. Cutting height too low. 1. Raise cutting height.
is not fi lling 2. Lift on blade worn off. 2. Replace blade.
(If so equipped) 3. Catcher not venting air. 3. Clean grass catcher.
Hard to push 1. Grass is too high or wheel height is too low. 1. Raise cutting height.
2. Rear of lawn mower housing or 2. Raise cutting height.
cutting blade dragging in heavy grass.
3. Grass catcher too full. 3. Empty grass catcher.
4. Handle height position is not right for you. 4. Adjust handle height to suit.
Blade / brake 1. Defective blade / brake control. 1. Replace blade / brake control.
does not engage
Engine dies when 1. Cold engine. 1. Allow engine to warm up for one minute.
starting blade 2. Mower is in uncut grass. 2. Move mower to cleared area.
Loss of drive 1. Belt wear. 1. Check/replace drive belt.
or slowing of 2. Belt off of pulley. 2. Check/reinstall drive belt.
drive speed 3. Drive cable worn or broken. 3. Replace drive cable.
(if self-propelled) 4. “Loose” drive control system. 4. Adjust drive control.
TROUBLESHOOTING
PROBLEM CAUSE CORRECTION