Troubleshooting - Husqvarna 7021RB Owner's Manual

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TROUBLESHOOTING
PROBLEM
CAUSE
CORRECTION
Does not start
Loss of power
Poor cut =
uneven
1.
Dirty air filter.
2.
Out of fuel.
3.
Stale fuel.
4.
Water in fuel.
5.
Spark plug wire is disconnected.
6.
Bad spark plug.
7.
Loose blade or broken blade adapter.
8.
Control bar in released position.
9.
Control bar defective.
10. Fuel valve lever (if so equipped)
is in the OFF position.
11.
12.
13.
1.
Clean/replace
air filter.
2.
Fill fuel tank.
3.
Drain fuel tank and refill tank
with fresh, clean gasoline.
4.
Drain fuel tank and refill tank
with fresh, clean gasoline.
5.
Connect wire to plug.
6.
Replace spark plug.
7. Tighten blade bolt or replace adapter.
8.
Depress control bar to handle.
9.
Replace control bar.
10. Turn fuel valve lever to the ON position.
Weak battery (if equipped).
11.
Disconnected
battery connector (if equipped).
12.
Engine control lever is
13.
in STOP position.
1.
Rear of lawn mower housing or
cutting blade dragging in heavy grass.
2.
Cutting too much grass.
3.
Dirty air filter.
4.
Buildup of grass, leaves, trash under mower.
5. Too much oil in engine.
6.
Walking speed too fast.
1.
Worn, bent or loose blade.
2.
Wheel heights uneven.
3.
Buildup of grass, leaves, trash under mower.
Charge battery.
Connect battery to engine.
Place engine control lever
in FAST position.
1.
Raise cutting height.
2.
Raise cutting height.
3.
Clean/replace
air filter.
4.
Clean underside of mower housing.
5.
Check oil level.
6.
Cut at slower walking speed.
1.
Replace blade. Tighten blade bolt.
2.
Set all wheels at same height.
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 qualified service center.
1.
1.
Engine flywheel brake is on
when control bar is released.
2.
Bent engine crankshaft.
3.
Blade adapter broken.
4.
Blade dragging in grass.
5.
Defective blade/brake clutch.
Starter rope
hard to pull
Grass catcher
is not filling
(if so equipped)
Hard to push
1.
Cutting height too low.
2.
Lift on blade worn off.
3.
Catcher not venting air.
1.
Grass is too high or wheel height is too low.
2.
Rear of lawn mower housing or
cutting blade dragging in heavy grass.
3.
Grass catcher too full.
4.
Handle height position is not right for you.
Depress control bar to upper handle
before pulling starter rope.
2.
Contact a qualified service center.
3.
Replace blade adapter.
4.
Move mower to cut grass / hard surface.
5.
Replace blade/brake clutch.
1.
Raise cutting height.
2.
Replace blade.
3.
Clean grass catcher.
1.
Raise cutting height.
2.
Raise cutting height.
3.
Empty grass catcher.
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.
1.
Beltwear.
2.
Belt off of pulley.
3.
Drive cable worn or broken.
4.
"Loose" drive control system.
Loss of drive
or slowing of
drive speed
(if self-propelled)
1.
Check/replace
drive belt.
2.
Check/reinstall
drive belt.
3.
Replace drive cable.
4. Adjust drive control.
16

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