Troy-Bilt ProLine 644H Bronco Operator's Manual page 12

Section 3: Features andControls
DepthRegulatorLever
This lever (G, Figure 3-5) controls the
tilling depth of the tines. Pull the lever
straight back and slide it up or down to
engage the notched height settings.
The highest notch (lever all the way
down) raises the tines approximately 1-
1/2" off the ground. This "travel" setting
allows the tiller to be moved without the
tines digging into the ground. Also use
this setting when starting the engine.
Move the lever upward to increase the
tilling depth. The lowest notch allows a
tilling depth of approximately 6"-8",
depending on soil conditions.
For best results, begin tilling at the
deepest depth possible without causing
the tiller to bog down. Increasethe tilling
depth from one pass over the soil to the
next.
Travel
Position
Figure 3-5." Depthregulator l ever,
WARNING
• Place the Depth Regulator
Lever in the "travel"
position before starting the
engine. This position
prevents the tines from
touching the ground until you
are ready to begin tilling.
Failure to follow this warning
HandlebarHeightAdjustment
The handlebar height is adjustable to
three different settings (see Figure 3-6).
As a general rule, adjust the handlebars
so they are at waist level when the tines
are 3"-4" into the soil.
To Adjustthe Handlebars:
1. Stop the engine, disconnect the spark
plug wire from the spark plug and allow
the engine to cool.
2. Removethe screws, Iockwashers and
nuts, reposition the handlebars, and
reinstall the hardware.
Figure3-6." H andlebar h eightadjustment.
Anti-ReverseStake
This stake is located at the rear of the
transmission, under the tine hood (see H,
Figure 3-7). Its purpose is to automati-
cally help prevent the counter-rotating
tines from letting the tiller back up in the
direction of the operator if the tiller
wheels had been inadvertently left in the
FREEWHEEL position. In this situation,
the Anti-Reverse Stake will be forced
down into the ground, lifting the tines
upward out of the soil and helping
prevent backward motion of the tiller.
TheAnti-Reverse Stakerequires no adjust-
ment, but should be inspected before
each tiller use to verify that it swivels
freely. Removeany clogged materials
(dirt, roots, rocks, etc.) that prevent the
Anti-Reverse Stake from swinging freely.
H
Figure3-7:Anti-Reverse S take.
ENGINE CONTROLS
could result in personal injury Referto the engine manufacturer's Engine
or property damage. Owner's Manual (included in the tiller lit-
erature package) to identify the controls
on your engine.
IMPORTANT:The control for stopping the
engine is located on the engine.
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