Craftsman 917.28990 Manual Del Operador página 18

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AUTOMATIC
TRANSMISSION
WARM UP
Before d riving t heunit i ncold weather, the
transmission
should bewarmed
upas follows:
1. Besure thetractor i sonlevel g round.
2. Release theparking b rake andtetthe
brake s lowly r eturn t ooperating position.
3. Allow oneminute f ortransmission
to
warm up. T his canbedone during t he
engine w arm upperiod.
The attachments
canbeused during
theengine w arm-up period a fter t he
transmission
hasbeen warmed u pand
may require t hechoke c ontrol bepulled
out s lightly.
NOTE: If at a highaltitude (above 3 000
feet)orincoldtemperatures
(below 32F)
thecarburetor fuel m ixture m ay need tobe
adjusted forbest e ngine p erformance
(see
"TO ADJUST CARBURETOR"
inthe Service
andAdjustments section ofthismanual).
PURGE
TRANSMiSSiON
,_CAUTION:
Never engage or disengage
freewheel lever while the engine is running.
To ensure proper operation and performance,
it is recommended that the transmission be
purged before operating tractor for the first
time. This procedure will remove anytrapped
air inside the transmission which may have
developed during shipping of your tractor.
IMPORTANT:
Should your transmission
require removal for service or replace-
ment, it should be purged after reinstalla-
tion before operating the tractor.
1. Place tractor safely on a level surface -
that is clear of objects and open - with
engine off and parking brake set.
2. Disengage transmission
by placing
freewheel control in disengaged posi-
tion (See "TO TRANSPORT"
in this
section of manual).
3. Sitting in the tractor seat, start engine.
After the engine is running, move
throttle control to stow position. Disen-
_igcage
parking brake.
AUTION: At any time, during step
4, there may be movement of the drive wheels.
4. Depress forward drive pedal to full
forward position and hold for five (5)
seconds and release pedal. Depress
reverse drive pedal to full reverse posi-
tion and hold for five (5) seconds and
release pedal. Repeat this procedure
three (3) times.
5. Shutoff engine and set parking brake.
6. Engage transmission
by placing free-
wheel control in engaged position (See
"TO TRANSPORT"
in this section of
manual).
18
7. Sitting in the tractor seat, start engine.
After the engine is running, move
throttle control to half (1/2) speed.
Disengage parking brake.
8. Drive tractor forward for approximately
five feet then backwards
for five feet.
Repeatthis driving procedure three times.
Your transmission is now purged and now
ready for normal operation.
MOWING
TiPS
• Tire chains cannot be used when the
mower housing is attached to tractor.
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.
If grass is extremely tall, it should be
mowed twice to reduce load and pos-
sible fire hazard from dried clippings.
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 speed 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 at-
tachment being used.

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