Gravely CONVERTIBLE 7.6 Lawn Mower User Manual


 
6
OPERATING THE TRACTOR
Figure 3 Figure 4
When starting the tractor, have high-low and
forward-reverse control levers in neutral and the
attachment clutch control pushed forward fully in the
disengaged position.
If the tractor is the eight speed transmission model the
Range Selection Lever should be in the position for the
range in which the tractor will be operated initially.
Engaging
wheels
- To put tractor in motion, first move
the high-low control lever to either the high or low
position (figure 3). Then move the forward-reverse
control lever into forward or reverse. Depress the
throttle to the desired speed.
NOTE: WITH ONLY THE HIGH-LOW CONTROL LEVER
IN HIGH OR LOW, THE TRACTOR WILL NOT MOVE.
Engaging Power Attachment
- Before attempting to put
a power attachment in gear, be sure that the tractor is
stopped, with high-low and forward-reverse control in
neutral and the engine running at idle speed.
After the attachment is engaged, increase the engine
speed to about half-throttle. Move the high-low control
lever to high or low.
Braking
- The forward-reverse control lever is used as a
brake when you must stop. Move the lever out of
forward, pass through neutral, and apply pressure at
reverse position -enough pressure to stop the forward
motion of the tractor.
STANDARD TRANSMISSION
- The standard
transmission models have four speeds - high and low
in forward and high and low in reverse. These speeds
control both ground speed and attachment speed, with
low gear having about 75% of the speed obtainable in
high gear.
EIGHT-SPEED TRANSMISSION
- The eight speed
transmission models feature a two-speed axle giving the
tractor four speeds forward and four speeds in reverse.
Shifting the axle between high and low ranges controls
only the tractor's ground speed. Shifting the high-low
control lever between high and low provides a further
control over ground speed as well as attachment speed.
To change axle ranges
: Stop the tractor. Keep the
high-low control lever in high or low, but move the
forward-reverse control to neutral. Move the range
selection lever to high or low range. Move the
forward-reverse control lever back and forth slightly if
necessary to allow the gears to mesh.
CAUTION: THIS SHIFT SHOULD ONLY BE MADE ON
LEVEL GROUND.
Individual jobs will dictate the combination of axle range
and gear to be used. In general, low axle range should
be used for plowing, cultivating, snow blowing, heavy
mowing, and other jobs where a slower ground speed is
needed to give the attachment longer to do its job. High
axle range generally is satisfactory for mowing and other
lawn jobs.
Other Points
- Don't slip the clutch. If you find the ground
speed of the tractor too fast for the job, shift to a lower
gear. If you can't shift any lower, take a smaller cut - one
on which the attachment can do the job with the tractor
fully in gear. Repeated clutch slipping causes undue
wear and should be avoided.
STOPPING
To shut off the engine, depress ignition stop button (figure
2) after disengaging attachment and moving both
operating levers to neutral.