Exmark Metro 21 - Manual (Page 16)

12
Danger
If the discharge door does not close completely,
the lawn mower could throw objects, causing
serious personal injury or death.
If you cannot close the door because the grass
clippings clog the discharge area, stop the engine
and gently move the discharge door handle back
and forth until you can close the door completely.
If you still cannot close the door, remove the
obstruction with a stick, not your hand.
Danger
The lawn mower can throw grass clippings and
other objects through an open discharge tunnel.
Objects thrown with enough force could cause
serious personal injury or death to the operator or
bystander.
Never open the door on the discharge tunnel when
the engine is running.
Operating Tips
•
Review the safety instructions and read this manual
carefully before operating the lawn mower.
•
Clear the area of sticks, stones, wire, branches, and
other debris that the blade could hit and throw.
•
Keep everyone, especially children and pets, away
from the area of operation.
•
Avoid striking trees, walls, curbs, or other solid
objects. Never deliberately mow over any object.
•
If the lawn mower strikes an object or starts to vibrate,
immediately stop the engine, disconnect the wire from
the spark plug, and examine the lawn mower for
damage.
•
Maintain a sharp blade throughout the cutting season.
Periodically file down nicks on the blade.
•
Replace the blade when necessary with an original
Exmark replacement blade.
•
Mow only dry grass or leaves. Wet grass and leaves
tend to clump on the yard and can cause the lawn
mower to plug or the engine to stall.
Wet grass or leaves can cause serious injury if you
slip and contact the blade.
Mow only in dry conditions.
Warning
•
Clean the underside of the lawn mower housing after
each mowing. See Cleaning under the Housing on
page 15.
•
Keep the engine in good running condition.
•
Set the engine speed to the fastest position for the best
cutting results.
Operating a lawn mower with its engine running
at a speed greater than the factory setting can
cause the lawn mower to throw a part of the blade
or engine into the operator’s or bystander’s area
and result in serious personal injury or death.
•
Do not change the engine speed setting.
•
If you suspect the engine speed is faster than
normal, contact an Authorized Service Dealer.
Warning
•
Clean the air filter frequently. Mulching stirs up more
clippings and dust which clogs the air filter and
reduces engine performance.
Cutting Grass
•
Grass grows at different rates at different times of the
year. In the summer heat, it is best to cut grass at the
2-1/4-inch (5.7 cm), 2-3/4-inch (7.0 cm), or 3-1/4-inch
(8.3 cm) cutting height settings. Cut only about a third
of the grass blade at a time. Do not cut below the
2-1/4-inch (5.7 cm) setting unless the grass is sparse or
it is late fall when grass growth begins to slow down.
•
When cutting grass over six inches (15 cm) tall, first
mow at the highest cutting height setting and walk
slower; then mow again at a lower setting for the best
lawn appearance. If the grass is too long and the leaves
clump on top of the lawn, the lawn mower may plug
and cause the engine to stall.
•
Alternate the mowing direction. This helps disperse
the clippings over the lawn for even fertilization.
If the finished lawn appearance is unsatisfactory, try one
or more of the following:
•
Sharpen the blade.
•
Walk at a slower pace while mowing.
•
Raise the cutting height on your lawn mower.