DR Power 9 HP Pro (March 2010 - June 2012) - Manual (Page 13)

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Grinding Stumps
These grinding instructions are basic guidelines. Try different techniques in
direction and depth of cut to determine what works best for your situation.
1. Start the Engine as described in the “Starting the Engine” section on the
previous page.
2. Allow engine to warm up at idle for a few minutes.
3. Move the Stump Grinder into position with the Cutter Head at the right side
of the stump on the edge closest to you (not touching) near the top edge
(Figure 13).
4. Lock the Hand Brake by pulling the Brake Lever, sliding the Lock forward and
releasing the Lever.
5. Hold down the Throttle Lever on the right side Handlebar (this will engage
the Cutter Head Rotation). Let the Cutter Head come up to speed.
6. Lower the Cutter Head approximately 1/2" to 1" into the front-top corner of
the stump and slowly swing the Cutter Head to the left into the stump by
pushing on the right hand handlebar
(Figure 14). When you are finished
the first pass through the Stump, swing the Cutter Head back to the starting
position on the right side. Lower the Cutter Head approximately 1/2" to 1"
and slowly swing the Cutter Head to the left through the Stump. Continue
this process until you have removed the front portion of the stump to
ground level.
7. Swing the Cutter Head over to the right side (Figure 15 arrow #1), advance
the machine forward (arrow #2) by releasing and resetting the brake. The machine should only be advanced far enough to
engage the Cutter Head into the stump so that when swept across the stump it will remove 1/2" to 1" of stump with each
sweep.
8. Sweep the Cutter Head across the stump, cutting away 1/2" to 1" of stump.
9. Continue cutting and advancing until the top level of stump is all removed, making sure not to cut the stump deeper than
ground level during this first stage.
10. Release the Throttle Lever and then the Operator Presence Lever to stop the Engine and wait ten seconds for Cutter Head to
stop rotating.
11. Release the Brake so you can pull the machine away from the stump and remove the chips/debris and any dirt away from the
stump.
12. Repeat steps 1 through 11 until the stump is removed to the desired depth.
If the Engine bogs down, lift the Cutting Head away from the stump to allow
the Cutting Head to come back up to speed before further cutting.
Read and understand the warnings listed in “Chapter 2 General Safety Rules”
before operating this Stump Grinder.
Figure 15
1
2
Figure 14
Start at
Right-Hand
Side of Stump
Figure 13
Brake
Lever
Always make sure the Teeth are not in contact with anything before operating
the Throttle Lever. The Clutch will be damaged if the teeth are not free to turn
as you start to press the Throttle.