DR PRO XL-SP Quick start guide

CONTACT US AT www.DRpower.com 1
Read and understand this manual and all instructions before operating the DR PRO XL-SP STUMP GRINDER.
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DR®PRO XL-SP STUMP GRINDER
SAFETY & OPERATING INSTRUCTIONS
Serial No.
Order No.
DR Power Equipment
Toll-free phone: 1-800-DR-OWNER (376-9637)
Fax: 1-802-877-1213
Website: www.DRpower.com

2DR® PRO XL-SP STUMP GRINDER
This indicates a hazardous situation, which, if not avoided, could result in death or serious injury.
Table of Contents
Chapter 1: General Safety Rules............................................................................................................................................................ 3
Chapter 2: Setting Up The DR PRO XL-SP STUMP GRINDER............................................................................................................ 6
Chapter 3: Operating The DR PRO XL-SP STUMP GRINDER............................................................................................................. 13
Chapter 4: Maintaining The DR PRO XL-SP STUMP GRINDER.......................................................................................................... 16
Chapter 5: Troubleshooting .................................................................................................................................................................. 25
Chapter 6: Parts Lists and Schematic Diagrams.................................................................................................................................. 28
Conventions used in this manual
Serial Number and Order Number
A Serial Number is used to identify your machine and is located on the Serial
Number Label on your machine (Figure 1). An Order Number is used to check
and maintain your order history and is located on the upper left portion of your
packing slip. For your convenience and ready reference, enter the Serial
Number and Order Number in the space provided on the front cover of this
manual.
Additional Information and Potential Changes
DR Power Equipment reserves the right to discontinue, change, and improve its
products at any time without notice or obligation to the purchaser. The
descriptions and specifications contained in this manual were in effect at
printing. Equipment described within this manual may be optional. Some
illustrations may not be applicable to your machine.
Serial Number
Label
Figure 1
This information is important in the proper use of your machine. Failure to follow this instruction could result in damage to
your machine or property.
This indicates a hazardous situation, which, if not avoided, could result in minor or moderate injury.

CONTACT US AT www.DRpower.com 3
Read this safety & operating Instructions manual before you use the DR PRO XL-SP STUMP GRINDER. Become familiar with the
operation and service recommendations to ensure the best performance from your machine. If you have any questions or need
assistance, please contact us at www.DRpower.com or call toll-free 1-800-DR-OWNER (376-9637) and one of our Technical
Support Representatives will be happy to help you.
This is a high-powered machine, with moving parts operating with high energy. You must operate the machine safely. Unsafe
operation can create a number of hazards for you, as well as anyone else in the nearby area. Always take the following precautions
when using this machine:
Keep in mind that the operator or user is responsible for accidents or hazards occurring to other people, their property, and
themselves.
Always wear protective goggles or safety glasses with side shields while using the PRO XL-SP STUMP GRINDER to protect
your eyes from possible thrown debris.
Avoid wearing loose clothing or jewelry, which can catch on moving parts.
We recommend wearing gloves while using the PRO XL-SP STUMP GRINDER. Be sure your gloves fit properly and do not
have loose cuffs or drawstrings.
Wear shoes with non-slip treads when using your PRO XL-SP STUMP GRINDER. If you have safety shoes, we recommend
wearing them. Do not use the machine while barefoot or wearing open sandals.
Wear long pants while operating the PRO XL-SP STUMP GRINDER.
Use ear protectors or ear plugs rated for at least 20 dba to protect your hearing.
Keep bystanders at least 50 feet away from your work area at all times. Stop the engine when another person or pet
approaches.
Chapter 1: General Safety Rules
Labels
Your DR PRO XL-SP STUMP GRINDER carries prominent labels as reminders for its proper and safe use. Shown below are copies
of all the Safety and Information labels that appear on the equipment. Take a moment to study them and make a note of their
location on your PRO XL-SP STUMP GRINDER as you set up and before you operate the unit. Replace damaged or missing safety
and information labels immediately.
Protecting Yourself and Those Around You
#23545
#25709 #26488
#
19320
#13683
#13758

4DR® PRO XL-SP STUMP GRINDER
Gasoline is a highly flammable liquid. Gasoline also gives off flammable vapor that can be easily ignited and cause a fire or
explosion. Never overlook the hazards of gasoline. Always follow these precautions:
Never run the engine in an enclosed area or without proper ventilation as the exhaust from the engine contains carbon
monoxide, which is an odorless, tasteless, and deadly poisonous gas.
Store all fuel and oil in containers specifically designed and approved for this purpose and keep away from heat and open
flame, and out of the reach of children.
Replace rubber fuel lines and grommets when worn or damaged and after 5 years of use.
Fill the gasoline tank outdoors with the engine off and allow the engine to cool completely. Don't handle gasoline if you or
anyone nearby is smoking or if you're near anything that could cause it to ignite or explode. Reinstall the fuel tank Cap and
fuel container cap securely.
If you spill gasoline, do not attempt to start the engine. Move the machine away from the area of the spill and avoid creating
any source of ignition until the gas vapors have dissipated. Wipe up any spilled fuel to prevent a fire hazard and properly
dispose of the waste.
Allow the engine to cool completely before storing in any enclosure. Never store a machine that has gas in the tank, or a fuel
container, near an open flame or spark such as a water heater, space heater, clothes dryer, or furnace.
Never make adjustments or repairs with the engine running. Shut down the engine, disconnect the spark plug wire, keeping it
away from the spark plug to prevent accidental starting, wait 5 minutes before making adjustments or repairs.
Never tamper with the engine’s governor setting. The governor controls the maximum safe operation speed and protects the
engine. Over-speeding the engine is dangerous and will cause damage to the engine and to the other moving parts of the
machine. If required, see your authorized dealer for engine governor adjustments.
Keep combustible substances away from the engine when it is hot.
Never cover the machine while the muffler is still hot.
Do not operate the engine with the air cleaner or the carburetor air intake cover removed. Removal of such parts could create
a fire hazard. Do not use flammable solutions to clean the air filter.
The muffler and engine become very hot and can cause a severe burn; do not touch.
Safety for Children and Pets
Safety with Gasoline - Powered Machines
General Safety
Tragic accidents can occur if the operator is not alert to the presence of children and pets. Children are often attracted to the
machine and the grinding activity.
Never
assume that children will remain where you last saw them. Always follow these
precautions:
Keep children and pets at least 50 feet from the working area and ensure they are under the watchful care of a responsible
adult.
Be alert and turn the machine off if children or pets enter the work area.
Never allow children to operate the PRO XL-SP STUMP GRINDER.
Operating this PRO XL-SP STUMP GRINDER safely is necessary to prevent or minimize the risk of death or serious injury. Unsafe
operation can create a number of hazards for you. Always take the following precautions when operating this PRO XL-SP STUMP
GRINDER:
Your PRO XL-SP STUMP GRINDER is a powerful tool, not a plaything. Exercise extreme caution at all times. The machine is
designed to grind stumps. Do not use it for any other purpose.
h h
kl h h

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California Proposition 65:
Engine exhaust and some of its constituents are known to the State of California to cause cancer, birth defects, and other
reproductive harm.
This product contains or emits chemicals known to the State of California to cause cancer, birth defects, and other
reproductive harm.
General Safety (continued
California Proposition 65
A Note to All Users
Under California law, and the laws of some other states, you are not permitted to operate an internal combustion engine using
hydrocarbon fuels without an engine spark arrester. This also applies to operation on US Forest Lands. All DR®PRO XL-SP
STUMP GRINDERS shipped to California, New Mexico and Washington State are provided with spark arresters. Failure of the
owner or operator to maintain this equipment in compliance with state regulations is a misdemeanor under California law and
may be in violation of other state and/or federal regulations. Contact your State Park Association or the appropriate state
organization for specific information in your area.
No list of warnings and cautions can be all-inclusive. If situations occur that are not covered by this manual, the operator must
apply common sense and operate this DR PRO XL-SP STUMP GRINDER in a safe manner. Contact us at www.DRpower.com or
call 1-800-DR-OWNER (376-9637) for assistance.
Never operate your unit on a slippery, wet, muddy, or icy surface. Exercise caution to avoid slipping or falling.
See manufacturer’s instructions for proper operation and installation of accessories. Only use accessories approved by DR
Power Equipment.
Never use the machine without ensuring that all guards and shields are in place.
Never, under any conditions, remove, bend, cut, fit, weld, or otherwise alter standard parts on the PRO XL-SP STUMP
GRINDER. This includes all shields and guards. Modifications to your machine could cause personal injuries and property
damage and will void your warranty.
Allow only one person to operate the PRO XL-SP STUMP GRINDER at any time.
If the machine should start making an unusual noise or vibration, shut down the engine, disconnect the spark plug wire,
keeping it away from the spark plug to prevent accidental starting, wait 5 minutes, then inspect for damage. Vibration is
generally a warning of trouble. Check for damaged parts and clean, repair, and/or replace as necessary.
Never tamper with safety devices. Check their proper operation regularly.
Before performing any maintenance or inspection procedure on the PRO XL-SP STUMP GRINDER, release the throttle lever
first and then release the operator presence lever, turn the ignition switch to “off”, remove the spark plug wire and keep it
away from the spark plug.
Never allow people who are unfamiliar with these instructions to use the PRO XL-SP STUMP GRINDER. Allow only
responsible individuals who are familiar with these rules of safe operation to use your machine.
Never overload or attempt to grind material beyond the manufacturer’s recommendation. Personal injury or damage to the
machine could result.
While using the PRO XL-SP STUMP GRINDER, don't hurry or take things for granted. When in doubt about the equipment or
your surroundings, stop the machine and take the time to look things over.
Never operate the machine when under the influence of alcohol, drugs, or medication.
Use the machine only in daylight.
Stay alert for hidden hazards or traffic.
Keep all nuts and bolts tight and keep the equipment in good operating condition.

6DR® PRO XL-SP STUMP GRINDER
Throttle
Lever
“Start” Key Switch
Figure 2
Maintenance
Meter
(optional
Operator
Presence
Lever
Brake Lever
Pneumati
c Tir
Oil
Carbide
Teeth
Belt
Guard
Gas Fill
Battery
REAR VIEW
Oil
Fill/Check
Starter Cord
Traction Drive
Leve
r
Cutter Head
Shroud
Chapter 2: Setting Up The DR PRO XL-SP STUMP GRINDER
It may be helpful to familiarize yourself with the controls and features of your DR PRO XL-SP STUMP GRINDER as shown in
Figure 2 before beginning these procedures. If you have any questions at all, please feel free to contact us at www.DRpower.com.
DR PRO XL-SP STUMP GRINDER Controls and Features
Choke Lever
Fuel
Shut-off

CONTACT US AT www.DRpower.com 7
Specifications
Engine Please refer to the Engine Owner’s Manual for Engine-specifications.
Tire Size 12.5" Pneumatic
Handle Bars Height adjustable to 32.2", 36.1" and 39.1" (w/tools)
Brake Disc w/ locking feature
Diameter 4" Disc
Clutch Centrifugal
Engagement speed 1900 RPMs
Frame Welded 12 ga steel construction
Cutter Head Belt V-Belt: BP48 49.3" OD, 47.3" ID
Traction Drive Belt V-Belt: 3L X 39
Construction Wrapped for abrasion resistance
Cutting Head Rotary 8 Tooth
Cutting Head Size 1.75" Wide (kerf) X 10.5" Diameter
Cutting Teeth Replaceable Carbide Tipped (three position)
Machine Dimensions 28" W x 55" L x 39" H* - *center Handlebar position
Weight 207 lbs
Compare the contents with the “Parts Supplied” list below. If you have any
questions please contact us at www.DRpower.com or call 1-800-DR-OWNER
(376-9637) for assistance.
Parts Supplied in Parts Box (Figure 3):
Item# Part # Description Qty
1 .............39226 .......... Cable, Brake ............................................................ 1
2 .............11214 .......... Cable Tie, 7-1/2" ..................................................... 8
3 .............11075 .......... Nut, Nylon Lock, 3/8-16 ......................................... 2
4 .............11241 .......... Washers, Flat, 5/16", USS ...................................... 6
5 .............15043 .......... Bolt, HHCS, 3/8-16 x 1-1/4", GR5.......................... 4
Figure 3
1
2 3
5
4

8DR® PRO XL-SP STUMP GRINDER
Assembly Instructions
Tools & Supplies Needed:
1/2" Wrench
Two 9/16" Wrenches
5.5mm Allen Wrench
Blocks
Philips Head Screwdriver or 5/16" Wrench
1. Remove the four Bolts and Flat Washers that secure the corners of the Chain
Drive Guard to the Frame using a 1/2" Wrench (Figure 4). Remove the
Guard from the frame and set it aside.
2. Position the Handlebar on the floor behind the machine and align the holes
at the end of the Handlebar with the center holes (of the 3 holes) in the
Frame (Figure 5).
Note: The center hole mentioned above is for a medium height setting. You could
use the bottom hole if you want a higher setting or the top hole if you want a lower
setting. The setting can always be changed at a later time.
3. Install a 3/8-16 x 1-1/4" Bolt, 3/8" Washer (outside) and 3/8" Locknut and
3/8" Washer (inside) into the lower Handlebar holes on each side. Tighten
using two 9/16" Wrenches (not too tight so the Handlebar can be rotated in
the next step).
4. Rotate the Handlebar up and install a 3/8-16 x 1-1/4" Bolt and 3/8" Washer
on both sides to hold the Handlebar upright (Figure 6). Tighten all
Handlebar Hardware using 9/16" Wrenches.
5. Reinstall the Chain Drive Guard you removed in step 1.
6. Cut the Cable Ties securing the Wire Harness and Traction Drive Cable to
the rear of the machine (Figure 7).
7. Separate the Traction Drive Cable From the Harness.
8. Install the Barrel end of the Drive Cable into the slot in the Traction Drive
Lever (Figure 8). Use a Flat Head Screwdriver to push the Barrel end under
the Lever so the Cable can slide up into the slot.
Note: If the Traction Control Cable is too difficult to install even when using the
Screwdriver, it may help to extend the Cable by turning the Adjuster shown in Figure
10. It will need to be turned counterclockwise (opposite as shown). Remember to
adjust properly as described in step 10 after Cable is filly installed.
Traction Drive
Cable Barrel End
Figure 8
Traction Drive
Leve
r
Slot
Wire Harness
and Traction
Drive Cable
Figure 7
Cable Ties
Bolt and
Flat Washer
Figure 6
Handlebar
A
ssembly
Figure 5
Bolt, Flat
Washers and
Locknut
Chain Drive
Guar
d
Figure 4
Bolts and
Flat Washer
s

CONTACT US AT www.DRpower.com 9
9. Pull the Traction Drive Cable Sheathing to the front to expose the Braided
Cable and insert the Braided Cable into the Bracket slot (Figure 9). Push the
Sheathing into the hole at the front of the Traction Drive Handle Bracket.
10.Turn the Traction Drive Cable Adjuster clockwise (looking from top) to
extend the adjuster to tighten the Cable (Figure 10). Only tighten enough so
the Lever rests lightly against the Bracket with no gap (play) between.
11.Connect the Operator Presence Connector and two Key Switch Terminals
behind the Cross Member (Figure 11).
12.Loosen the Bolt of the left side Wheel using a 1/2" Wrench (Figure 12).
13.Support the machine with wood blocks to raise the left side Wheel slightly
off the ground.
14.Remove the Bolt, Lock Washer, large Flat Washer and left side Wheel
Assembly from the Axle. Take note of the Key that is in the Axle Keyway, if it
falls out, keep it in a safe place.
Note: Ensure that the thin Flat Washer stays on the Axle.
15.Insert the barrel end of the Brake Cable into the hole in the bottom of the
Brake Lever (1)(Figure 13). Insert the Brake Cable Sheathing into the hole at
the front of the Brake Lever Bracket (2).
16.Insert the Braided Cable end of the Brake Cable through the Micro Adjuster
and into the Clamp (Figure 14).
17.Ensure the Sheathing is fully into the Micro adjuster as you pull the end of
the Cable tight and tighten the Clamp Screw using a 5.5mm Allen Wrench.
Brake Micro
A
djuste
r
Figure 14
Clamp
Screw
Twisted
Cable
Brake
Cable
Sheathing
Barrel
En
d
Figure 13
Brake Cable
Sheathin
g
1
2
Brake
Leve
r
Brake Lever
Bracket
Bolt, Lock Washer
and Thick Flat Washer
Figure 12
Wheel
A
ssembly
Key Switch
Figure 11
Wire Harness
Operator
Presence
Connecto
r
Key Switch
Terminals
Cross
Member
In-Line
Traction Drive
Cable
A
d
j
uste
r
Clockwise
to tighten
Figure 10
Sheathing
Figure 9
Slot

10 DR® PRO XL-SP STUMP GRINDER
18.Check the Brake Lever to ensure there is no Gap Between the Lever and
Bracket (Figure 15). If there is a noticeable gap, loosen the Clamp, pull the
Cable though the Clamp some more and retighten (Figure 14).
19.Reinstall the Wheel Assembly with the Valve Stem facing in and ensure the
Key is installed in the Key Slot on the Axle.
20.If there is a Cable Tie securing the Throttle Cable to the lower portion of the
Handlebar, slide the Cable tie about half way up the Handlebar (Figure 16).
If it is too tight to move easily, the Cable Tie can be cut off.
21.Remove the Wing nut from the Air Filter Cover and remove the Air Filter
Cover (Figure 17).
22.Remove the Wing Nut from the Air Filter and remove the Air Filter (Figure
18).
23.Remove the Air Filter Base.
24.Loosen the Bowden Clamp with a Phillips Screw Driver or 5/16" Wrench and
position the Cable Sheath under the Clamp (Figure 19). Hook the “Z” Bend
end of the Throttle Cable in the Hole (hole furthest left) in the Throttle
Linkage.
25.Hold the Engine Throttle Lever forward in the idle (Turtle) position. While
holding the Throttle Lever, pull on the Cable Sheath to tighten the Cable.
26.Hold the Sheath in this position and release the Engine Throttle Lever.
Tighten the Bowden Clamp onto the Sheathing with a Philips Head
Screwdriver or 5/16" Wrench. Make sure the Tab of the Clamp fits into the
cutout below. Do not over-tighten.
27.Actuate the Throttle Lever on the right side Handlebar to ensure that the
Throttle Linkage goes smoothly to full throttle and back to Idle when
released.
28.Reinstall the Air Filter Base (Figure 19). Ensure that the tab under rear of the
Base locks fully into the Base.
29.Reinstall the Air Filter and Cover.
Figure 19
Bowden
Clamp
Throttle Linkage
Positioned at Idle
“Z” Bend
Throttle
Cable
Sheath
Cable
Tight
A
ir Filte
r
Figure 18
Wing Nut
A
ir Filter
Base
Base
A
lignment
Tab
A
ir Filter
C
ove
r
Figure 17
Wing Nut
Cable Tie
Figure 16
Brake
Lever
Figure 15
No Gap

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30.Use the Cable Ties to secure the Cables and Wires to the Control panel and
handlebars at the locations indicated (Figure 20). Cut the excess from the
Cable Ties using Wire Cutters.
Adding Oil and Gasoline
Engine Oil SAE 30: above 50 degrees F; 10w-30: 10-90 degrees F; 5w-30:
30 degrees F or below
Fuel Unleaded gasoline
Note: Use only the recommended high detergent engine oil. Other types of oil could
cause problems operating your machine. Please refer to your Engine Owner’s
Manual for detailed oil information.
1. Position the machine so the Frame and Engine are level. Remove the Oil
Fill/Dipstick and clean the end of it with a rag (Figure 21).
2. Machines are shipped with no oil. Initially add 16 oz. of the oil
recommended by the Engine Manufacturer using a Funnel. Wait one minute
for the oil to settle.
3. Replace the Dipstick but do not screw in. Remove the Dipstick and check
the oil level. Clean the Dipstick with the rag after checking.
4. Continue adding a few ounces of oil at a time, rechecking the Dipstick until
the oil reaches the fill mark. Be careful not to overfill.
5. Replace the Dipstick and screw all the way down when full.
6. Remove the Gas Fill Cap and fill the Gas Tank with fresh, unleaded gas (with
a minimum of 85 Octane) to approximately 1" to 1-1/2" below the top of the
fill neck to allow for fuel expansion (Figure 22). Be careful not to overfill and
reinstall the Gas Fill Cap before starting the engine. See your Engine
Owner’s Manual for more detailed information.
Note: To refill the gas tank, turn the engine OFF and let the engine cool at least five
minutes before removing the gas fill cap.
Gas Fill Cap
Figure 22
Oil Fill/Dipstick
Figure 21
Full Low
Cable
Tie
s
Figure 20
Cable
Tie
s
The Frame and Engine must be level to get an accurate reading when
adjusting the oil level. Use blocks to adjust the height of the cutting head to
level the Frame.
Remove any blocking used to level the Engine before operating the DR PRO
XL-SP STUMP GRINDER.
You must add oil before starting the engine. This machine is shipped
without oil. Traces of oil may be in the reservoir from factory testing, but
you must add oil before starting the engine. Fill the reservoir slowly,
checking the level frequently to avoid overfilling.
To get an accurate reading when checking the oil level:
- The Engine must be level (Support front of machine as needed)
- The dipstick should not be screwed down to ensure an accurate oil
level reading.

12 DR® PRO XL-SP STUMP GRINDER
Check the Tire Pressure
Tools Needed:
Tire Pressure Gauge
Air Compressor
1. Remove the Valve Stem Protective Cap and check the tire pressure with a
Tire Pressure Gauge (Figure 23).
2. Compare the tire pressure reading from step 1 with the manufacturer's
recommended tire pressure stamped on the side of the tire.
3. If the pressure is too low, add air through the Valve Stem with an air hose.
4. Replace the Valve Stem Protective Cap when finished.
Connect the Battery
Note: The Battery may have been shipped with a protective Cap over the negative
Terminal and the Cap will need to be removed to connect the Negative Wire.
1. Connect the Green Negative Wire to the negative (black) Battery Lug (Figure
24).
Battery
Figure 24
Negative
Terminal
Valve Stem
Protective Cap
Figure 23
Do not over inflate the tires. Inflate to the manufacturers recommended
pressure found on the tires.

CONTACT US AT www.DRpower.com 13
Chapter 3: Operating The DR PRO XL-SP STUMP GRINDER
It may be helpful to better familiarize yourself with the features of your PRO XL-
SP STUMP GRINDER by reviewing Figure 2 in Chapter 2 before beginning the
steps outlined in this chapter.
Control Levers
Familiarize yourself with all of the Control Levers and their functions before
operating the PRO XL-SP STUMP GRINDER (Figure 25).
Starting the Engine Manually
1. Make sure the Fuel Shut-off is in the “OPEN” position (Figure 26).
2. Move the Choke Control Lever to the left to the choke position (leave in the
run position to the right if the engine is already warm).
Note: The Operator Presence Lever must be held down for the Engine to start and
continue running. If you need to stop the machine quickly for any reason, let
go of the Operator Presence Lever.
3. Hold down the Operator Presence Lever and slowly pull the Starter Cord
until you feel resistance, then pull quickly. The Cord will recoil back into
position.
4. As the engine warms up, slowly adjust the Choke to the right towards the run
position. Wait until the engine runs smoothly before each Choke adjustment.
5. When the Engine is warmed up and running smoothly, ensure that the
Choke is fully in the run position to the right.
Starting the Engine (Electric Start)
1. Make sure the Fuel Shut-off is in the “OPEN” position (Figure 26).
2. Move the Choke Control Lever to the left to the choke position (leave in the
run position to the right if the engine is already warm).
Note: The Operator Presence Lever must be held down for the Engine to start and
continue running. If you need to stop the machine quickly for any reason, let
go of the Operator Presence Lever.
3. Hold down the Operator Presence Lever and turn the Key Switch fully to the
“Start” position until the engine starts (Figure 27). The Key will move back to
the center position when released.
4. As the engine warms up, slowly adjust the Choke to the right towards the run
position. Wait until the engine runs smoothly before each Choke adjustment.
5. When the Engine is warmed up and running smoothly, ensure that the
Choke is fully in the run position to the right.
Key Switch
Figure 27
Figure 26
Starter
Cord
Choke
Lever
Fuel
Shut-off
Figure 25
Operator Presence
Lever
Brake
Lever Throttle
Lever
Traction Drive
Lever
Read and understand the warnings listed in “Chapter 2 General Safety Rules”
before operating this PRO XL-SP STUMP GRINDER.

14 DR® PRO XL-SP STUMP GRINDER
Stopping the Engine
1. Slowly release the Throttle Control Lever to the idle position (Figure 25).
2. Release the Operator Presence lever to stop the Engine.
Before You Begin
Dig away the earth and remove any stones near the tree stump that may interfere with your work.
Check that the ground is free of foreign objects, such as electrical cables, barbed wire, etc.
Cut the stump as close to the ground as possible using a Chainsaw before using the PRO XL-SP STUMP GRINDER.
Operating the Traction Drive
The Cutter Head will begin spinning when the Engine speed reaches the Clutch
engagement RPM. The Cutter Head Shroud will protect against contacting
Rocks, Ground, Ramps, and Trailer Decks while using the Self Propel feature.
Remove the Cutter Head Shroud before attempting to grind Stumps.
1. Slide the Cutter Head Shroud into the Tow Bar Adapter (Figure 28). Secure
with the 3/8" X 3" Wire Lock Pin.
2. Start the Stump Grinder as directed in the “Starting the Engine” section on
the previous page.
3. Press the Traction Drive Lever to the Handlebars and Slowly press the
Throttle Lever to move the machine forward (Figure 29). The more you
press the Throttle Lever to the Handlebar, the faster the machine will travel.
4. Stop the machine by releasing the Throttle Lever and the Traction Drive
Lever.
Figure 29
Traction Drive
Lever
Throttle
Lever
Operator
Presence Lever
The Cutter Head Shroud must always be installed when the Traction Drive is operated to prevent damage to the machine,
damage to Trailers/Truck Beds etc. when loading, and to prevent the operator from being injured.
Set the Wheel Brake, shut down the engine, remove the spark plug wire and wait five minutes before installing the Cutter
Head Shroud.
Cutter Head
Shroud
Figure 28
Wire Lock
Pin

CONTACT US AT www.DRpower.com 15
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 page
13.
2. Allow engine to warm up at idle for a few minutes.
3. Move the PRO XL-SP 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 30).
4. Lock the Hand Brake by pulling the Brake Lever, sliding the Lock forward,
and releasing the Lever.
5. Fully Squeeze 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 31). When you are finished with
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 32 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 PRO XL-SP STUMP GRINDER.
Figure 32
1
2
Figure 31
Start at
Right-Hand
Side of Stump
Figure 30
Brake
Leve
r
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.

16 DR® PRO XL-SP STUMP GRINDER
Chapter 4: Maintaining The DR PRO XL-SP STUMP GRINDER
Regular maintenance is the way to ensure the best performance and long life of your machine. Please refer to this manual and the
engine manufacturer's owner's manual for maintenance procedures. Service intervals listed in the checklist below supersede
those listed in the engine manufacturer's owner's manual.
Regular Maintenance Checklist
PROCEDURE BEFORE EACH
USE
EVERY 25
HOURS
EVERY 100
HOURS
Check En
g
ine Oil Level
Check General E
q
ui
p
ment Condition
Check Cuttin
g
Teeth
(
are the
y
dull or dama
g
ed
)
, re
p
lace as needed
Clean En
g
ine Exterior & Coolin
g
Fins
Remove debris wrapped around Cutter Head for Bearing protection.
Check Tire Pressure
Re
p
lace Belts if stretched or worn
Clean Air Filte
r
Lubricate Cables
(
SAE 30 Oil
)
Change Engine Oil 1st time 5 hours
Re
p
lace S
p
ark Plu
g
Replace Air Filter
Removing and Replacing the Engine Oil
Tools and Supplies Needed:
Oil Extractor (contact us at DRpower.com to purchase from our website)
Clean Rags
Small funnel
Engine Oil (see your Engine Manual for Oil specifications)
1. Position the machine so the Frame and Engine are level.
2. Remove the Oil Fill/Dipstick (Figure 33).
Oil Fill/Dipstick
Figure 33
Full Low
Before performing any maintenance procedure or inspection, stop the engine, wait five (5) minutes to allow all parts to cool.
Disconnect the spark plug wire, keeping it away from the spark plug. Disconnect the Battery Terminals (Electric start only).
The Frame and Engine must be level to get an accurate reading when
adjusting the oil level. Use blocks to adjust the height of the cutting head to
level the Frame.

CONTACT US AT www.DRpower.com 17
3. Insert the Hose of the Oil Extractor and remove the Oil as described in the
Extractor instructions.
4. Initially add 16 oz. of oil (type of oil recommended by the Engine
Manufacturer) into the Oil Fill using a Funnel and wait one minute for the
oil to settle.
5. Check the Dipstick (see Notice above) and continue adding a few ounces of
oil at a time, rechecking the Dipstick until the oil reaches the fill mark. Be
careful not to overfill.
6. Replace the Oil Fill/Dipstick when finished.
Replacing the Cutter Head Belt
Tools and Supplies needed:
Two 1/2" Wrenches
9/16" Wrench
New DR Cutter Head Belt (#36563)
Gloves
1. Remove the three Bolts and Locknuts from the Belt Guards with two 1/2"
Wrenches and remove the outer Belt Guard (Figure 34).
2. You should wear Gloves as you position a 9/16" Wrench onto the Idler Pulley Bolt and in line with the Pulley Bracket (Figure
35). Pull the Wrench to rotate the Belt Tensioner away from the Belt and then remove the Belt by rotating the Cutting Head to
roll the Belt over the top of the Pulley.
3. Reverse the previous steps to install the new Belt and reinstall the Belt Guard.
Note: When installing the Belt, place the Belt around the Clutch Pulley and into the Idler Pulley. Start the Belt over the top of the
Cutting Head Pulley as you rotate the Cutting Head to roll the Belt onto the Pulley.
Replacing the Traction Drive Belt
Tools and Supplies needed:
1/2" Wrench
New DR Drive Belt (#39221)
Gloves
Note: If the Cutter Head Shroud is installed, it must be removed to perform the
following steps.
1. Tilt the machine back only enough to access the Drive Belt Guard (Figure
36).
2. Remove the four Bolts and Flat washers that secure the Drive Belt Guard to
the Frame using a 1/2" Wrench. Remove the Drive Belt Guard. Figure 36
Drive Bel
t
Guar
d
Bolts and
Flat washer
s
Idler
Pulley
Figure 35
Belt
Clutch
Pulley
Cutting Head
Pulley
Figure 34
Bolts and
Locknuts
Outer Belt Guard
Fill the Oil reservoir slowly, checking the level frequently to avoid
overfilling.
To get an accurate reading when checking the oil level:
- The Engine must be level.
- The dipstick should not be screwed down to ensure an accurate oil
level reading.

18 DR® PRO XL-SP STUMP GRINDER
Note: Pay close attention the routing of the Belt before you remove it so you will
reinstall it correctly (Figure 37).
3. Rotate the Transmission forward and remove the Belt from the
Transmission and Cutter Head Pulley.
Note: The left and right sides mentioned in the next step (and in Figure 37) refer to
the operating position when you standing at the Handlebars.
4. Install the new Belt around the Transmission Pulley and then around the
Cutter Head Pulley. The Belt goes from the left side of the Transmission
Pulley to the to the bottom of the Cutter Head Pulley and the right side of
the Transmission to the top of the Cutter Head Pulley.
5. Reinstall the Drive Belt Guard and lower the machine.
Transmission
Drive Belt
Figure 37
Cutter Head
Pulley
Transmission
Pulley
Right Left
Pay close attention how the Belt is routed. If you install it wrong, the machine
will move in reverse when the Traction Drive Lever is activated and cause
damage to the machine or cause personal injury.

CONTACT US AT www.DRpower.com 19
Wear Gloves when working near the teeth. Without Gloves your hands may
get cut from the sharp edges.
Replacing the Wheels
Tools and Supplies needed:
1/2" Wrench
Jack Stand or Block of Wood
1. With the PRO XL-SP STUMP GRINDER on the ground, remove the Bolt,
Lock Washer and Large Flat Washer from the Axle with a 1/2" Wrench
(Figure 38).
2. Block the PRO XL-SP STUMP GRINDER up so the Wheels are off the ground
and remove the Wheel.
Note: There is a Shim on the Axle on the inside of each Wheel (make sure the Shims
are in place when installing the Wheel). Both Wheels have a Keyway with
Keys (ensure the Key is installed in the Keyway when installing the Wheel).
3. Reinstall the Wheel with the Valve Stem facing in and secure with the Bolt,
Lock Washer and large Flat Washer using a 1/2" Wrench.
Rotating the Teeth (from dull to sharp edge)
Tools and Supplies needed:
1/2" Wrench
Dead Blow Hammer
Gloves
1. Block the front end of the PRO XL-SP STUMP GRINDER so the Cutter Head
is just off the ground.
Note: It may help to mark the "Dull" cutting edge prior to rotating the Teeth so you
can be sure you have rotated to an unused cutting edge.
2. Loosen the Locknut on the Tooth until the top of the Locknut is flush with
the top of the Tooth threads (Figure 39).
3. Lightly tap on the top of the Locknut with a Dead-blow Hammer so the
Tooth will drop down away from the Tooth Mount (Figure 40).
4. Rotate the Tooth until the next flat area on the side of the Tooth is aligned
with the flat area of the Mount (Figure 41).
5. After the tooth has been turned to the desired position push the Tooth up
into the Mount and tighten the Locknut. There are no torque specification
needed for the Locknut, but make sure you tighten them firmly.
6. Repeat steps 2-5 for the remaining Teeth as needed.
Tire
Figure 38
Bolt, Lock
Washer and
Large Flat
Washe
r
Valve Stem
on Inside
Locknut
Figure 39
Tooth
Tooth
Mount
Tooth
Threads
Locknut
Figure 40
Flat Area
on Tooth
(3 places)
Flat Area
on Mount
Figure 41

20 DR® PRO XL-SP STUMP GRINDER
Wear Gloves when working near the teeth. Without Gloves your hands may
get cut from the sharp edges.
Replacing the Cutting Teeth
Tools and Supplies needed:
1/2" Wrench
1/2" Socket
Torque Wrench
Dead Blow Hammer
Gloves
1. Block the front end of the PRO XL-SP STUMP GRINDER so the Cutter Head
is just off the ground.
2. Remove the Locknut from the tooth threads (Figure 42).
3. Lightly tap on the top of the Tooth Threads with a Dead-blow Hammer to remove the Tooth from the Tooth Mount.
Note: In the next step make sure that the flat spot on the mount and one of the flat spots on the Tooth are aligned properly before
tightening the Tooth hardware. Ensure that the Spacer Stays in position at the Locknut end of the Tooth.
4. Insert a new Tooth into the Mount and hold it up into position in the Mount as you secure with a new Locknut. Torque the
Locknut to 20 ft. lbs.
5. Repeat steps 2 through 4 for the remaining Teeth as needed.
Replacing the Clutch
Tools and Supplies needed:
1/2" Wrench (Premier)
5/8" Wrench (Pro and Pro-XL)
Never Seize type Grease
Dead Blow Hammer
1. Remove the outer Belt Guard and Belt as described in “Replacing the Cutter
Head Belt” on page 17.
2. Place a 1/2" Wrench onto the Clutch Bolt and rotate the Wrench
counterclockwise until you feel some resistance (Figure 43).
Clutch
Figure 43
Bolt, Lock
Washer and
Flat Washer
Locknut
Figure 42
Tooth
Tooth Mount
Spacer
Check the wear of the Head Assembly each time the Teeth are replaced. Replace the Head Assembly if it is damaged or worn.
Ensure that all parts are secure and tight. Large Allen Head Bolts should be at 180 ft. lbs. torque.
Be sure to use the new Locknuts provided with the replacement teeth.
Failure to replace the Head Assembly when damaged or worn may result in Cutting Teeth coming loose and damaging the
machine.
The Locknuts should be snug, but do not over tighten.
Only tip the machine back enough to lift the Cutter Head off the ground. Never tip the machine back on the Handlebars. Oil will
get into the muffler if the machine is tipped completely back and could damage the engine.
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