MTD 407 Operator's Manual page 15

SECTION 10: TROUBLE SHOOTING GUIDE
Trouble Possible Cause(s) Corrective Action
Handle not in position. Carriage bolts not seated in the handle Adjust the height of the handle and make sure that
insulators, the carriage bolts are seated properly into the
handle insulators. Tighten the hand knobs.
Mower not starting.
Cord disconnected from the motor/
blade control.
Motor/blade control switch defective.
Extension cord not connected to the
plug on the mower.
Extension cord not connected to a
source of power.
Circuit breaker on the mower or in the
house receptacle tripped.
Reconnect the cord keeping the cord restraint close
to the meter/blade control.
Replace motor/blade control switch.
Connect the extension cord to the plug on the
mower.
Connect the extension cord to a 110-120 volt 60
cycle A.C. receptacle.
Reset the circuit breaker following instructions in
the Operating Your Lawn Mower section of this
manual.
Circuit breaker on the mower Too much workload on the mower. Raise the cutting height, reset the circuit breaker on
tripping, the mower, take a smaller width of cut, and walk
slowly.
Fuse blown; outlet overloaded. Connect to an outlet that is fused for 15 amperes.
Reset the circuit breaker and start the mower again.
Mower cutting grass Lawn rough or uneven. Move the wheels to a higher cutting height position.
unevenly.
Cutting height not set properly. All wheels must be placed in the same cutting
height for the mower to cut evenly.
Mower not mulching properly. Wet grass clippings stick to the Wait till the grass dries before mewing.
underside of the deck.
Hard to push. High grass or cutting height too low. Raise cutting height.
Rear of mower housing and blade Raise cutting height.
dragging in heavy grass.
Mower vibrating at higher Bent motor shaft. Stop the motor, disconnect the power source and
speed, inspect for damage. Repair before restarting. If
vibration persists, take it to a service dealer.
Blade is unbalanced. Balance the blade by grinding each cutting edge
equally.
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