Craftsman 917.272451 Owner's Manual page 16

Lawn tractor 21.5 hp, 42" mower electric start 6 speed transaxle
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COLD WEATHER STARTING (50 ° F and
below)
7. When engine starts, slowly push
choke control in until the engine
begins to run smoothly. Continue to
push the choke control in small steps
allowing the engine to accept small
changes in speed and load, until the
choke control is fully in. If the engine
starts to run roughly, pull the choke
control out slightly for a few seconds
and then continue to push the control
in slowly. This may require an engine
warm-up
period from several seconds
to several minutes, depending
on the
temperature.
• The attachments
can be used during
the engine warm-up
period and may
require the choke control
be pulled out
slightly.
NOTE: If at a high altitude (above 3000 feet)
or in cold ternperetures (below 32 F) the
carburetor fuel mixture may need to be
a.ldJouSted
for best engine performance (see
ADJUST CARBURETOR"
in the Service
and Adjustments section of this manual).
MOWING
TIPS
• Mower should be properly leveled for
best mowing performance.
See =TO
LEVEL MOWER
HOUSING"
in the
Service and Adjustments
section of this
manual.
• The left hand side of mower should be
used for trimming.
• Drive so that clippings are discharged
onto the area that has already
been
cut. Have the cut area to the right of the
tractor.
This will result in a more even
distribution of clippings and more
uniform cutting.
• When mowing large areas, start by
turning to the right so that clippings will
discharge away from shrubs, fences,
driveways, etc. After one or two
rounds, mow in the opposite direction
making left hand turns until finished.
[
t
• If grass is extremely tall, it should be
mowed twice to reduce load and
possible fire hazard from dried clip-
pings.
Make first cut relatively high; the
second to the desired height.
• Do not mow grass when it is wet. Wet
grass will plug mower and leave
undesirable
clumps.
Allow grass to dry
before mowing.
• Always
operate
engine at full throttle
when mowing
to assure better mowing
performance
and proper discharge of
material
Regulate ground speed by
selecting a low enough gear to give the
mower cutting performance
as well as
the quality of cut desired.
• When operating attachments,
select a
ground speed that will suit the terrain
and give best performance
of the
attachment
being used.
MULCHING
MOWING
TIPS
IMPORTANT:
For best performance,
keep mower housing free of built-up
grass and trash.
Clean after each use.
• The special mulching blade will recut
the grass clippings many times and
reduce them in size so that as they fall
onto the lawn 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 mower
cutting
height so that the mower cuts off
only the top one-third
of the grass
blades.
For extremely
heavy grass,
reduce your width of cut on each pass
and mow slowly,
o
'P'
'l r,
• 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
16
and graining of the lawn.

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