To Stop Engine; Mowing Tips - Craftsman 917.378521 Owner's Manual

5.5 horsepower power-propelled 21" multi-cut rotary lawn mower
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TO START
ENGINE
NOTE: Due to protective coatings on the
engine, a small amount
of smoke
may be
present during the initial
use of the
product
and should
be considered
normal.
1. Be sure fuel valve is in the
ON
position.
2. To start a cold engine,
move handle
mounted
throttle/choke
control
lever to
CHOKE
position.
3. Hold operator
presence
control
bar
down to the handle
and pull starter
handle quickly.
Do not allow starter
rope to snap back.
4. Slowly move throttle
control lever to
FAST position
after engine starts.
• To start a warm engine, move throttle
control lever to FAST position,
then
follow steps above.
TO STOP ENGINE
To stop engine,
release
operator
presence
control
bar. Wait until blade
and all moving
parts have stopped
and
turn fuel valve to OFF position
if you do
not intend to restart the engine soon.
ON
Fuel valve lever
MOWING TIPS
• Under certain
conditions,
such as very
tail grass, it may be necessary to raise
the height of cut to reduce
pushing
effort and to keep from overloading
the
engine
and leaving
clumps
of grass
clippings.
It may also be necessary
to
reduce ground
speed
and/or
run the
mower over the area a second
time.
• For extremely
heavy cutting,
reduce
the
width of cut by overlapping
previously
cut path and mow slowly.
• For better grass bagging and most
cutting
conditions,
the engine
speed
should
be set in the FAST position.
• Pores in cloth grass catchers can
become
filled with dirt and dust with
use and catchers will collect less grass.
To prevent this, regularly hose catcher
off with water and let dry before using.
• Keep top of engine
around starter clear
and clean of grass c)ippings and chaff.
This will help engine air flow and
extend
engine
life.
MULCHING
MOWING
TIPS
IMPORTANT:
For best performance,
keep mower housing free of built-up
grass and trash. See "CLEANING"
in the
Maintenance
section of this manual.
• The special mulching blade will recut
the grass clippings many times and
reduce them in size so that as they fall
onto the _awn they will disperse
into the
grass and not be noticed.
Also, the
mulched
grass
will biodegrade
quickly
to provide nutrients
for the lawn.
Always
mulch with your highest engine
(blade) speed
as this will provide
the
best recutting
action of the blades.
• Avoid cutting your lawn when it is wet.
Wet grass tends to form clumps
and
interferes
with the mulching
action. The
best time to mow your lawn is the early
afternoon.
At this time the grass has
dried and the newly cut area will not be
exposed
to the direct sun.
• For best results, adjust the lawn mower
cutting
height so that the lawn mower
cuts off only the top one-third
of the
grass blades.
If the lawn is overgrown
it
will be necessary
to raise the height of
cut to reduce pushing
effort and to keep
from overloading the engine
and
leaving
clumps
of mulched
grass.
For
extremely
heavy grass,
reduce
your
width of cut by overlapping
previously
cut path and mow slowly.
• Certain types of grass and grass
conditions may require that an area be
mulched
a second time to completely
hide the clippings.
When doing a
second
cut, mow across
or perpendicu-
lar to the first cut path.
• Change
your cutting
pattern
from week
to week.
Mow north to south one week
then change
to east to west the next
week.
This will help prevent
matting
10
and graining
of the lawn.

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