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CONTACT US AT 

www.DRpower.com

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Read this safety & operating Instructions manual before you use the DR 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 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 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 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 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 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 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 

#15345 

#23545 

#13758 

#25709 

#18887 

#26488 

#19320 

Summary of Contents for Stump Grinder

Page 1: ...is manual and all instructions before operating the DR STUMP GRINDER Original Language DR STUMP GRINDER SAFETY OPERATING INSTRUCTIONS Serial No Order No DR Power Equipment Toll free phone 1 800 DR OWN...

Page 2: ...ted 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...

Page 3: ...sible thrown debris Avoid wearing loose clothing or jewelry which can catch on moving parts We recommend wearing gloves while using the STUMP GRINDER Be sure your gloves fit properly and do not have l...

Page 4: ...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...

Page 5: ...ories 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 otherwi...

Page 6: ...rd Gas Fill Battery Electric Start Models REAR VIEW Oil Fill Check Premier and Pro Model Chapter 2 Setting Up The DR STUMP GRINDER It may be helpful to familiarize yourself with the controls and featu...

Page 7: ...0 RPMs 1900 RPMs Frame Welded 12 ga steel construction Welded 12 ga steel construction Welded 12 ga steel construction Belt V Belt V Belt V Belt Size AP47 49 3 OD 47 3 ID BP47 49 8 OD 47 3 ID BP47 49...

Page 8: ...Octane to approximately 1 to 1 1 2 below the top of the fill neck to allow for fuel expansion Figure 7 Be careful not to overfill and reinstall the Gas Fill Cap before starting the engine See your Eng...

Page 9: ...he 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 protectiv...

Page 10: ...thly 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...

Page 11: ...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 obje...

Page 12: ...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...

Page 13: ...ed Check Cutter Head when Teeth are replaced Replace Cutter Head order kit 30506 Replace Spark Plug Replace Air Filter Removing and Replacing the Engine Oil Tools and Supplies Needed 10mm Premier or 1...

Page 14: ...e outer Belt Guard Figure 18 2 You should wear Gloves as you position a 9 16 Wrench onto the Idler Pulley Bolt and inline with the Pulley Bracket Figure 19 Pull the Wrench to rotate the Belt Tensioner...

Page 15: ...ear the teeth Without Gloves your hands may get cut from the sharp edges 1 Block the front end of the Stump Grinder so the Cutter Head is just off the ground Note It may help to mark the Dull cutting...

Page 16: ...d 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...

Page 17: ...r can be locked to aid in loosening the Hardware in the next step but must be unlocked to remove the Brake Drum 2 Remove the four Bolts Lock Washers and Flat Washers from the Brake Drum with a 1 2 Wre...

Page 18: ...the Cable needs more tightening Repeat steps above as needed NOTE When the Cable is adjusted correctly and the Brake Lever is locked the left side Wheel will still rotate in reverse towards the operat...

Page 19: ...C at no more than 2 amps At 1 amp the Battery may need to be charged for as long as 48 hours At 2 amps the Battery may need to be charged for as long as 24 hours NOTE Using the Recoil Starter and then...

Page 20: ...Law in most areas prohibits incinerating disposing in a landfill or mixing a sealed lead acid Battery with household trash Recycling a Used Battery Please dispose of your used Batteries responsibly by...

Page 21: ...settings adjustment and travel The Spark Plug may be dirty or cracked change it if necessary If it s oily leave it out hold a rag over the Plug Hole and pull the Recoil Cord several times to blow out...

Page 22: ...tretched to a point that it is slipping off the Pulleys Clutch is not working Change Clutch refer to Chapter 4 Maintaining the DR Stump Grinder The Engine does not fully return to low idle when the th...

Page 23: ...CONTACT US AT www DRpower com 23...

Page 24: ...L 14 24729 Handlebar Left 15 24730 Handlebar Right 16 26567 Cross Member Handlebar 35948 Cross Member Handlebar 17 26479 Bracket Brake Cable 18 16518 Lever Brake w lock 19 18069 Lever Op Presence w w...

Page 25: ...CONTACT US AT www DRpower com 25 Schematic HANDLEBAR ASSEMBLY...

Page 26: ...1 2 X 75 L 26 12686 Bolt HCS 3 8 16 x 2 GR5 ZP 27 35072 Arm Idler Pulley 28 3527 Pulley Flat Idler 3 12 X 75 X 375 With 3 8 Shoulder Adapter 29 33424 Spring Idler Ref Part Description 30 34140 Label...

Page 27: ...CONTACT US AT www DRpower com 27 Schematic DRIVE ASSEMBLY...

Page 28: ...514 Washer 385 ID 1 39 OD 15 T 10 17882 Bolt HCS 5 16 24 x 1 GR2 ZP 11 26564 Axle 12 26469 Bushing Bronze 75 OD 63 ID 13 11237 Washer Flat 10 24 USS Ref Part Description 14 11073 Nut Nylon Lock 1 4 20...

Page 29: ...CONTACT US AT www DRpower com 29 Parts Schematic AXLE ASSEMBLY...

Page 30: ...30 DR STUMP GRINDER Notes...

Page 31: ...CONTACT US AT www DRpower com 31 Notes...

Page 32: ...sure all nuts bolts and screws are securely fastened Inspect moving parts and the Drive Belt for damage and wear replace if necessary Remove the Spark Plug s and pour about 1 ounce of motor oil into...

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