White Outdoor Products ROTO BOSS 310 Instruction Manual page 8

CONTROLLING SPEED AND TILLING DEPTH
The tiller has eight 10-mch diameter, spring steel tines.
Tine speed is 160 RPM The normal tilling depth is4V2
inches deep. It may be changed by adjusting the depth
bar and pressure exerted on the handles. The tilling
width may also be varied. See adjustment section.
Throttle Control
The throttle control lever is located on the right hand
side of handle.
ADJUSTMENTS
WARNING
Disconnect the spark plug wire from
spark plug and ground against the
engine block {secure in "V" slot)
before making any adjustments or
performing maintenance. See fig¬
ure 8.
NOTE
Right hand side is determined from
the operator's position standing be¬
hind the tiller.
The throttle control lever adjusts the engine speed. It
also gives finger tip control of the carburetor and
magneto stop switch. With the throttle control knob
pushed completely forward, the carburetor is in FAST
position. Pulling the throttle control back slightly adjusts
the engine speed to START. Pulling the throttle back
further reduces the engine speed to SLOW. When the
throttle is pulled completely back, the magneto stop
switch grounds out the spark and stops the engine.
Move the throttle control to slow when transporting the
tiller. When the tiller is being moved to or from the
garden, the depth bar should be raised up until it clears
the ground.
The machine may be moved under its own power,
without damaging grass areas as long as it is allowed
to move freely. If the operator holds back, it will start
to dig.
Depth Bar
The depth bar acts as a brake for the tiller and con¬
trols the depth and speed at which the machine will
operate. You may till deeper by moving the depth bar
all the way down. See adjustment section.
Handle Pressure
Further control of tilling depth and travel speed can be
obtained by variation of pressure on the handle. A
downward pressure on the handle will reduce the work¬
ing depth and increase the forward speed. An upward
pressure on the handle will increase the working depth
and reduce the forward speed. The type of soil and
working conditions will determine the actual setting of
the depth bar and the handle pressure required.
HANDLE POSITION
The upper handle can be adjusted to two different
heights. The operator of the tiller can easily adjust the
handle position by unscrewing the two knobs, remov¬
ing the two bolts and reassembling in another position.
No tools are necessary to make this adjustment. See
figure 13.
FIGURE 13.
DEPTH BAR ADJUSTMENT
The working depth of the tiller is determined by the posi¬
tion of the depth bar. Remove the clevis pin and inter¬
nal cotter pin to raise or lower depth bar. See figure 14.
FIGURE 14.
8