Yard-Man 21A-392B401 - Manual (Page 9)

9
Controlling Speed & Tilling Depth
Wheel Yoke Adjustment
• Place wheel yoke so that the wheels are forward
(nearest point between wheels and tines) for
shallow tilling, cultivating, and transport. The
forward speed will increase. See Figure 8.
• Turn yoke around (farthest point from the tines) for
deep tilling. Forward speed will decrease in this
position. See Figure 8.
Figure 8
Depth Stake Adjustment
The depth stake acts as a brake for the tiller and
controls the depth and speed at which the machine will
operate.
1.
By increasing the depth of the depth stake, the
forward speed of the machine is reduced, and the
working depth is increased.
2. When the depth stake is raised, the working depth
of the machine is reduced and the forward speed is
increased.
• Remove the clevis pin and hairpin clip to raise or
lower depth stake. Refer to Figure 6.
IMPORTANT: The working depth of the machine may be
predetermined by setting the depth stake and wheels
so that the wheels are about four inches from the
ground when the tines and depth stake are resting on
the ground. This setting will permit a working depth of
about four inches. When presetting the working depth,
handles should be adjusted so the hand grips are a little
above waist height. The tiller will be lower when the
tines and depth stake penetrate ground. See Figure 9.
Figure 9
When tilling, leave
approximately 8 inches of
untilled soil between the
first and second tilling
paths, then make the third
path between the first and
second. In some soils, the
desired depth is obtained
by going over the garden
two or three times. In the
latter case, the depth stake
should be lowered before
each succeeding pass over
the garden. Passes should
be made across the length and width of the garden
alternately. Rocks which are turned up should be
removed from the garden area.
Handle Pressure
Further control of tilling depth and travel speed can be
obtained by variation of pressure on the handles.
1.
A downward pressure on the handles will reduce
the working depth and increase the forward speed.
2. An upward pressure on the handles will increase
the working depth and reduce the forward speed.
NOTE: The type of soil and working conditions will
determine the actual setting of the depth stake and the
handle pressure required.
Transporting The Tiller
To transport the tiller, pivot the depth stake forward and
out of the way. With the throttle control in SLOW
position, the unit will walk freely on the lawn.
Position wheel yoke
for shallow tilling Position wheel yoke
for deep tilling
Transport
Depth Stake
Deep Tilling
Shallow Tilling
Position
Wheel Setting For
Deep Tilling