Cub Cadet GT 2521 Operator's Manual page 15

1. Operator must be sitting in the tractor seat.
2. Pull choke control knob to full choke position.
Less choking may be necessary due to variations
in temperature, grade of fuel, etc. Little or no
choking will be needed when the engine is warm.
3. Move the throttle lever to the "FAST" position.
4. Place the PTO switch in the "OFF" position.
5. Fully depress the brake pedal.
6. Turn the ignition key clockwise to the "START"
position and release it as soon as the engine
starts; however, do not crank the engine
continuously for more than 5 seconds at a time. If
the engine does not start within this time, turn the
key "OFF" and wait a minute to allow the engine's
starter motor to cool, then try again.
7. After the engine starts, slowly release the brake
pedal. As the engine warms up, gradually push
the choke control knob all the way in. Do not use
the choke to enrich the fuel mixture, except as
necessary to start the engine.
NOTE
This engine is designed to give maximum
performance and service life if operated with the
choke fully open and the throttle in the "FAST"
position. To open the choke fully requires an
engine warmup period of several seconds to
several minutes, depending on the outdoor
temperature.
After starting the engine, push in the choke
control until the engine begins to run smoothly.
As the engine warms and begins to run roughly,
continue to push in the choke control as
necessary to keep the engine running smoothly
until the choke is fully depressed. Operating
equipment during engine warmup is not
recommended.
STOPPING THE ENGINE
CAUTION
Remove the key from the ignition switch to
prevent accidental starting or battery discharge
if the equipment is left unattended.
Place the PTO switch in the "OFF" position. Move the
throttle control lever to the "SLOW" position. Wait a
moment to allow the engine speed to stabilize, then
turn the ignition key to the "OFF" position. Remove the
key from the ignition switch.
TRACTOR BREAK-IN PROCEDURE
Never operate a new engine immediately
under full load. Break it in carefully as shown
in the table below.
Engine Throttle
Control Lever
Period
1/2
1st hour
X
2nd hour
3rd through
12th hour
COLD WEATHER STARTING
Engine exhaust gases are dangerous. Do not
run the engine in a confined area such as a
storage building any longer than is necessary.
Immediately move the tractor outdoors.
For personal safety, the operator must be sitting
in the tractor seat before starting the tractor.
When starting the engine at temperatures near or below
freezing, ensure the correct viscosity motor oil is used in
the engine and the battery is fully charged. Start the en-
gine as follows:
1. Pull the choke all the way out to full choke position.
2. Move the throttle control lever to the "FAST"
position.
3. Place the PTO switch in the "OFF" position.
4. Fully depress the brake pedal.
15
CAUTION
Position Load
3/4 Full
X None
Light drawbar load
X Mowing with tractor
at slow groundspeed
X Medium drawbar
load
X Normal mowing
WARNING
WARNING
or
or