Troy-Bilt 644HMBRONCO, 645AMBRONCO To Adjustthe Handlebars, Travel Position Shallow Deep Settings

Section3: FeaturesandControls

DepthRegulatorLeverHandlebarHeightAdjustment

Anti-ReverseStake

This lever (G, Figure3-5) controls the tilling depth of the tines. Pullthe lever straight backand slide it up or down to engagethe notched height settings.

The highest notch (lever all the way down) raisesthe tines approximately 1- 1/2" off the ground. This "travel" setting allows the tiller to be movedwithout the tines digging into the ground. Also use this setting when starting the engine.

Movethe lever upward to increasethe tilling depth. The lowest notch allows a tilling depth of approximately 6"-8", dependingon soil conditions.

For best results, begintilling at the deepestdepth possiblewithout causing the tiller to bog down. Increasethe tilling depth from one pass over the soil to the next.

The handlebarheight is adjustableto 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, disconnectthe spark plug wire from the spark plug and allow the engineto cool.

2.Removethe screws, Iockwashersand nuts, reposition the handlebars,and reinstall the hardware.

This stake is locatedat the rear of the

transmission, under the tine hood (see H, Figure 3-7). Its purpose is to automati- cally help preventthe counter-rotating tines from letting the tiller back up in the direction of the operator if the tiller wheels had beeninadvertently left in the

FREEWHEELposition. In this situation, the Anti-Reverse Stakewill beforced

down into the ground, lifting the tines upward out of the soil and helping prevent backward motion of the tiller.

TheAnti-ReverseStakerequires no adjust- ment, but should be inspected before eachtiller useto verify that it swivels freely. Remove any clogged materials (dirt, roots, rocks, etc.) that preventthe Anti-ReverseStakefrom swinging freely.

L_

Travel	jG
Position
Shallow
	Deep
_	Settings	Figure3-6: Handlebar height adjustment.

Figure3-5: Depth regulator lever.

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 could result in personal injury or property damage.

H

Figure 3-7: Anti-ReverseStake.

ENGINECONTROLS

Referto the engine manufacturer'sEngine Owner'sManual (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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