Black & Decker MM875 Lawn Mower User Manual


 
8. Replace blade on mower and tighten securely.
LUBRICATION:
No lubrication is necessary. Do not oil the wheels. They have plastic bearing
surfaces which require no lubrication.
ACCESSORIES:
Recommended accessories for use with your tool are available from
your local dealer or authorized service center. If you need assistance
regarding accessories, please call: 1-800-544-6986.
WARNING: The use of any accessory not recommended for use
with this tool could be hazardous.
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TROUBLE SHOOTING/CORRECTIVE ACTION GUIDE:
PROBLEM CORRECTIVE ACTION
-Motor will not start - Check fuse or circuit breaker to ensure
power is to outlet
- Check extension cord with another
electrical device to ensure cord is good.
- Call customer service representative
1-800-544-6986
-Motor keeps slowing - The underside of the mower may be
down plugged with clippings. Turn mower off, wait
for blade to stop and UNPLUG mower and
clean out.
- Grass may be too tall, try pushing at a
slower pace, or raise cutting height.
- Check blade sharpness and balance, and
correct if required.
- If mulching, there is too much grass.
Turn mower off, wait for blade to stop and
UNPLUG mower and attach discharge chute
to disperse grass
-Runs but poor cut - The blade may be dull. Turn mower off,
results wait for blade to stop and UNPLUG mower
and carefully check for sharpness.
- Blade may be damaged (bent or badly
chipped). Turn mower off, wait for blade to
stop and UNPLUG mower and replace if
necessary.
- Grass may be too high or thick for cutting
height. Turn mower off, wait for blade to stop
and UNPLUG mower and raise cutting
height.
-Excess vibration - Blade may be loose. Turn mower off, wait
for blade to stop and UNPLUG mower
then check blade for tightness.
- Blade may be bent or badly chipped.
Turn mower off, wait for blade to stop and
UNPLUG mower and replace if necessary.
- Blade may be unbalanced. Refer to blade
balancing section of instruction manual.
-Mower is hard to push - Mower is too close to the ground with the
amount of grass being cut. Turn mower off,
wait for blade to stop and UNPLUG mower
and raise cutting height.
- Turn mower off, wait for blade to stop and
UNPLUG mower and check wheels and
axles to ensure all are rotating easily.
-Mower leaves clumps - Turn mower off, wait for blade to stop and
of grass UNPLUG mower and raise cutting
height.
- If mulching, there is too much grass.
Turn mower off, wait for blade to stop and
UNPLUG mower and attach discharge chute
to disperse grass
PROBLEM CORRECTIVE ACTION
- Turn mower off, wait for blade to stop and
UNPLUG mower and carefully check blade
for sharpness.
- Grass may be too wet to cut. Wait for
grass to dry.
-Discharge/Bag plugging - Grass may be too wet, try again when
grass is dry.
- There is too much grass. Turn mower off,
wait for blade to stop and UNPLUG mower
and raise cutting height.
HERE ARE SOME HELPFUL HINTS T
O GET THE MOST FROM
YOUR BLACK & DECKER MOWER...AND KEEP YOUR LAWN
LOOKING BEAUTIFUL
1. Lawns should first be mowed in the spring when the grass is
about 2 1/2 to 3 inches high. Mowing too early restricts the grass
root systems which renew themselves every spring. New grass
should be clipped when it is about 2 1/2 inches high.
2. Do not remove too much grass blade surface at one time...never
more than 1/3 of the leaf height during each cutting. Cutting too
close “shocks” sensitive grass blades, resulting in a shallow root
system and thus making it more difficult for your lawn to reach
water in the soil.
3. Lawn care experts say that excessively close cutting is
responsible for much of the difficulty experienced on many lawns.
The depth and strength of the roots of grass are almost exactly
proportional to its growth. Grasses of mature lawns often are
seriously injured when mowed shorter than 1 1/2 inches, and a
height of 1 1/2 to 2 inches is preferred on large lawns.
4. Mow your lawn when it is dry to avoid clumping of wet grass. If
you have a choice, late afternoon is the ideal time for mowing, not
only because the grass is dry, but also because the sensitive new
cut area of the grass will not be exposed to intense sunlight.
5. Keep the mowing blade sharp for a nice clean cut. This improves
the mower’s performance and enhances the look of your lawn. A
dull blade shatters and bruises the tips of the grass. This impairs
the healthy growth of your lawn and increases susceptibility to turf
diseases. If the grass tips are bruised it causes a brownish colour
and gives your lawn an unhealthy appearance. A dull blade may
also pull up young seedlings.
6. Try to mow your lawn at the same (consistent) cutting height.
While there are times when you should vary the cutting height
with the changing seasons, a consistent cutting height produces a
healthier, lovelier lawn with generally fewer weeds. Mow more
frequently during periods of fast growth. Frequent cutting ensures
that the lower, less attractive portion of the grass will not show.
7. If your lawn has grown too long, (a vacation, for example, may
interrupt your cutting schedule) mow at a cutting height one or two
positions higher than normal. A second pass at “normal” cutting
height a few days later will put your lawn back on schedule.
Changing the cutting height is a simple matter with Black &
Decker’s One Touch Wheel Height Adjustment, which
simultaneously adjusts all four wheels at once.
8. During the spring and fall, (or after an interruption to the cutting
schedule) the grass will be longer and thicker. If the motor
continually slows down while cutting, try setting the wheels for a
higher cutting height. Excessive motor loading can result in
uneven cutting, quicker discharge of the battery, and can cause
the circuit breaker to trip, which stops the motor.
9. Three good ideas to enhance your lawn’s appearance: Vary the
mowing direction frequently; mow horizontally on hillsides; (this is
also a good safety practice) and do not forget to overlap the
mowing path on each pass.
10. Always mow grass so that clippings are discharged onto cut lawn.
This will keep your lawn looking fresh by avoiding “Cut Grass”
build-up which will eventually brown and appear ugly.