Troubleshooting - Black Box BM21HWAS Operator's Manual

PROBLEM
Handle not in position.
Mower not starting.
Mower self-propel not working.
Mower self-propel too slow
Mower cutting grass unevenly.
Mower not mulching properly.
Mower hard to push.
Mower not bagging properly.
Mower vibrating at higher speed.
Engine stops while cutting.
If problem persists after trying the above solutions, contact customer service or a qualified service center for assistance.
NOTICE:
As the equipment owner, you are responsible for the performance of the required maintenance listed in the Maintenance
section. It is recommended that you retain all receipts covering maintenance on your equipment. Neglecting or failing
to perform the required maintenance may increase emissions, decrease fuel efficiency, degrade performance, cause ir-
reversible engine damage and/or void your warranty.

TROUBLESHOOTING

POSSIBLE CAUSE
Handle knobs not tight.
No fuel in tank.
Spark plug shorted or fouled.
Spark plug is broken (cracked porcelain
or electrodes broken).
Ignition lead wire shorted, broken, or
disconnected from spark plug.
Ignition inoperative.
Drive belt off pulley.
Drive belt worn.
Lawn is rough or cutting height not set
properly.
Wet grass clippings sticking to the un-
derside of the deck.
Grass is too thick.
High grass, rear of mower housing and
blade dragging in heavy grass, or cut-
ting height too low.
Cutting height set too low.
Walking too quickly while mowing.
Blade is unbalanced, excessively or
unevenly worn.
Bent engine shaft.
Cutting height set too low.
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SOLUTION
Tighten handle knobs.
Fill tank.
Replace spark plug.
Replace spark plug.
Replace lead wire or attach to spark
plug.
Contact qualified service center.
Contact qualified service center.
Contact qualified service center.
Adjust the cutting height.
Wait until the grass dries before mowing.
Raise cutting height.
Raise cutting height.
Raise cutting height.
Slow your pace.
Replace the blade.
Stop the engine. Inspect for damage.
Have repaired by a qualified service
center before restarting.
Raise the cutting height.