Purge Transmission; Cold Weather Starting - Craftsman 917.271860 Owner's Manual

Lawn tractor 21.0 hp, 42" mower electric start automatic transmission
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COLD WEATHER STARTING
(50 ° F and
below)
8. 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.
AUTOMATIC TRANSMISSION
WARM UP
Before driving
the unit in cold weather,
the transmission
should
be warmed
up as
follows:
1. Be sure the tractor
is on level ground.
2.
Place the motion control
lever in
neutral.
Release
the parking
brake
and let the clutch/brake
slowly
return
to operating
position.
3. Allow one minute
for transmission
to
warm up. This can be done during the
engine warm
up period.
• The attachments
can be used during
the engine warm-up
period
after the
transmission
has been warmed
up and
may require the choke control
be
pulled out slightly.
NOTE:
If at a high altitude
(above
3000
feet) or in cold temperatures
(below
32 F)
the carburetor
fuel mixture
may need to
be adjusted
for best engine
performance
(see "TO ADJUST
CARBURETOR"
in the
Service
and Adjustments
section
of this
manual).
PURGE TRANSMISSION
_eCAUTION:
Never engage or disengage
ewneel
lever wnile the engine is
running.
To ensure proper operation
and perfor-
mance, it is recommended
that the
transmission
be purged
before operating
tractor for the first time. This procedure
will
remove any trapped
air inside the trans-
mission which may have developed
during
shipping of your tractor.
IMPORTANT:
Should your transmission
require removal
for service
or replacement,
it should
be purged after reinstallation
before operating
the tractor.
1. Place tractor
safely
on level surface
with engine off and parking
brake set.
2.
Disengage
transmission
by placing
freewheel
control in "transmission
disengaged"
position
(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 slow position.
With
motion control
lever in neutral
(N)
position,
slowly
disengage
clutch/
brake
pedal.
4.
Move motion control lever to full
forward
position
and hold for five (5)
seconds.
Move lever to full reverse
position
and hold for five (5) seconds.
Repeat
this procedure
three
(3)
times.
NOTE:
During this step there will be no
movement
of drive wheels. The air is
being removed
from hydraulic
drive
system.
5.
Move motion control lever to neutral
(N) position.
Shutoff
engine and set
parking
brake.
6.
Engage
transmission
by placing
freewheel
control
in 'transmission
engaged"
position
(See "TO TRANS-
PORT'
in this section
of manual).
7.
Sitting in the tractor
seat, start
engine.
After the engine
is running,
move throttle
control to half (1/2)
speed.
With motion control lever in
neutral
(N) position,
slowly disen-
gage
clutch/brake
pedal.
8.
Slowly move motion control
lever
forward,
after the tractor
moves
approximately
five (5) feet, slowly
move motion control
lever to reverse
position.
After the tractor moves
approximately
five (5) feet return the
motion
control lever to the neutral
(N)
position.
Repeat this procedure
with
the motion control
lever three (3)
times.
Your transmission
is now purged
and
ready for normal
operation.
16

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