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DR
TRIMMER/MOWER™
SAFETY & OPERATING INSTRUCTIONS
Models: Premier, Pro, Pro-XL, Pro-XL Self-Propelled
Serial No.
Order No.
Read and understand this manual and all instructions before operating the DR TRIMMER/MOWER.
Original Language
DR Power Equipment
Toll-free phone: 1-800-DR-OWNER (376-9637)
Fax: 1-802-877-1213
Website: www.DRpower.com

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Donna Aldous
June 2, 2025

What is the spark plug gap?

Summary of Contents for DR Premier

  • Page 1 SAFETY & OPERATING INSTRUCTIONS Models: Premier, Pro, Pro-XL, Pro-XL Self-Propelled DR Power Equipment Toll-free phone: 1-800-DR-OWNER (376-9637) Serial No. Fax: 1-802-877-1213 Original Language Order No. Website: www.DRpower.com Read and understand this manual and all instructions before operating the DR TRIMMER/MOWER.
  • Page 2: Table Of Contents

    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.
  • Page 3: Chapter 1: General Safety Rules

     Keep bystanders at least 50 feet away from your work area at all times. The tips of the cutting cords on the DR TRIMMER/MOWER can throw sticks, small stones, gravel, and bits of debris over long distances at great velocity. Do not travel over loose materials such as gravel or mulch with the trimmer head spinning.
  • Page 4  While using the DR TRIMMER/MOWER, do not 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. Make sure that you have 100% control of the mower at all times.
  • Page 5 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 TRIMMER/MOWER in a safe manner. Contact us at www.DRpower.com or call 1-800- DR-OWNER (376-9637) for assistance.
  • Page 6: Chapter 2: Setting Up The Dr Trimmer/Mower

    Chapter 2: Setting Up The DR TRIMMER/MOWER It may be helpful to familiarize yourself with the controls and features of your DR TRIMMER/MOWER as shown in Figure 1 before If you have any questions at all, please feel free to contact us at www.DRpower.com.
  • Page 7 57 Lbs Manual Start, 71 Lbs Electric Start 83 Lbs Electric Start Weight 63 Lbs Electric Start 65 Lbs Electric Start Accessories 12" Beaver Blade, DR 12" Beaver Blade, DR 12" Beaver Blade, DR 12" Beaver Blade, DR DuraBlade, TrimSafe DuraBlade, TrimSafe...
  • Page 8 Check the tightness of the four Bolts that secure the Lower Handlebar to the Frame using a 1/2" Wrench (Figure 3). Figure 3 The Handlebar folds down for easy storage and the DR Trimmer/Mower is shipped to you with them folded. Notches...
  • Page 9 Installing the Cutting Cords Side Openings There are two installation points on each Line Plate. Each point is 180 degrees apart. Always install two Cords, one opposite the other at the same height. Note: Soaking the Cutting Cords and trimming the ends at an angle will make installation easier.
  • Page 10 Adding Oil and Gasoline Note: Refer to the Engine Manufacturers Manual for more detailed Engine information. Tip: To avoid confusion, we recommend leaving the caps ON the Fuel and Oil Fills until you are ready to pour either gasoline or oil into the correct Fill.
  • Page 11: Chapter 3: Operating The Dr Trimmer/Mower

    3. Grasp the Recoil Starter Handle and slowly pull until you feel resistance. Let the cord retract a little bit and then pull the cord rapidly to start the Engine. One or two pulls usually starts the DR TRIMMER/MOWER. Note: Do not engage the Bail Bar (Trimmer Head Control) until after the Engine has started.
  • Page 12 Electric Starting Key Switch Note: Use the following steps with Electric-Starting models only. Throttle 1. Push the Throttle Control Lever on the right side of the Handlebar (Figure Control 12) all the way forward (Rabbit or Choke position depending upon model). Lever 2.
  • Page 13 Engaging the Self Propel Wheel Drive Wheel Drive Engage Bar 1. Bring the Wheel Drive Engage Bar toward you and the Handlebar (Figure Handlebar 15). The closer to the Handlebar you move the Bar the faster the machine will travel. The machine will continue to move forward until you release the Bar.
  • Page 14 Cord Tips We ship two (2) thicknesses of Cutting Cord with your DR TRIMMER/MOWER. The Cords are Blue (175-mil) and Green (155-mil). Because conditions and vegetation vary so much, you should experiment with Cord weights (diameters) to discover what works best for your particular mowing and trimming situations. Here are a few things to keep in mind: ...
  • Page 15 Obstacles Dealing with obstacles in the terrain is easy with your new DR TRIMMER/MOWER. The following section explains how to approach most common obstacles. The trimmer engine's power can easily throw stones, sticks, and other debris at great velocity, which could cause personal injury or property damage.
  • Page 16 Windrows The DR TRIMMER/MOWER Cutting Cords cut even tall grass in just one pass, so you can collect clippings and leaves for mulch without raking. The machine ejects cut material to its right side, so you can use it like a lawn broom to make windrows for easy clean-up.
  • Page 17: Chapter 4: Maintaining The Dr Trimmer/Mower

    Chapter 4: Maintaining The DR TRIMMER/MOWER 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.
  • Page 18 ® 4. Looking down at the top of the Frame, turn the Mow-Ball clockwise until it unscrews completely from the Bearing Housing. ® Note: If the Mow-Ball continues to turn, but does not come off, check to be sure that you locked the Screwdriver into the shaft. If the Mow-Ball will not turn by hand a 9/16"...
  • Page 19 Replacing the Trimmer Head Belt (non Self Propelled models) Use only DR belts on your machine. Do not use hardware store variety belts. Tools and Parts needed: Bolts and Flat Trimmer Cord Washers  3/8" Wrench  7/16" Wrench Trimmer ...
  • Page 20 Pulley groove. This allows you to now remove the Trimmer Head Figure 29 Belt from around the Engine and Head Assembly Pulleys. 8. Install a new DR Trimmer Head Belt around the Engine and Head Assembly Flat Groove Idler Locknut Pulleys.
  • Page 21 11. Install the small Spacer and flat Idler Pulley (Figure 32). Make sure you Guide Pin Belt place the Belt correctly between the Idler Pulley, Bracket Tab, and Guide Pin. Flat Groove Bracket Tab Idler Pulley “V” Groove The Belt must be installed on the inside of the guide Pin as shown in figure Idler Pulley 32.
  • Page 22 10. Rotate the Belt Guides away from the Transmission Pulley and remove the Belt. 11. Install a new DR Drive Belt around the Transmission Pulley. “Z” Bend 12. Rotate the Belt Guides into position and secure with the two Screws you removed and tighten the other two using a Philips Head Screwdriver.
  • Page 23 Figure 39 3. Make sure to securely tighten the Gas Fill Cap. 4. Using the handle of the DR TRIMMER/MOWER, tip the machine to drain the oil out through the Oil Filler Tube into a suitable receptacle (Figure 39). 5. Refill the Engine using SAE 30 HD oil to the level indicated on the Dipstick.
  • Page 24 Adjusting the Trimmer Head Belt Tension through the Trimmer Control Cable Before adjusting the trimmer head belt tension cable, check that the belt is properly installed (see Figure 21 on page 16). Also make sure the Cable is attached to the bail bar. The Belt will stretch a little when new, then more over time.
  • Page 25: Charging The Battery

    Operate the Trimmer Engine for at least 45 minutes to maintain proper Battery charge. If the Battery loses its charge, you will need to use a trickle Charger (like the DR Battery Charger) to recharge it. The Charger should have an output of 12 volts at no more than 2 amps.
  • Page 26 Disposing of the Battery Responsibly The Battery is a sealed lead-acid Battery. Recycle or dispose of it in an environmentally sound way.  Do not dispose of a lead-acid Battery in a fire; the Battery may explode or leak.  Do not dispose of a lead-acid Battery in your regular, household trash.
  • Page 27: Chapter 5: Troubleshooting

    Spark Plug hole and pull the Recoil Cord several times to blow out any oil in the Cylinder, then wipe off the Spark Plug and reinsert it.  If the Engine still will not start, visit our web site at www.DRPower.com or call 1-800-DR- OWNER (376-9637) for assistance.
  • Page 28 45 minutes at a time, the Battery may need to be periodically charged. See the Battery Care section on page 25.  If your Battery is charged and your DR TRIMMER/MOWER still won’t start, visit our web site at www.DRPower.com or call 1-800-DR-OWNER (376-9637) for assistance.
  • Page 29 Cords won’t last as long against obstacles as in the open. Work on controlling the cutting pattern. With practice, you’ll learn to cut closer to obstacles without hitting them.  If none of the above helps, visit our web site at www.DRPower.com or call 1-800-DR- OWNER (376-9637) for assistance.
  • Page 30: Chapter 6: Parts Lists And Schematic Diagrams

    Chapter 6: Parts Lists and Schematic Diagrams Parts List – Main Frame Assembly Note: Part numbers listed are available through DR Power Equipment. Ref# Part# Description Ref# Part# Description 31130 Frame W/ Labels, TR4 14375 Washer, .505" ID X 1" OD 34352 Engine W/ Label, B&S, 6.25, M/S, 50st...
  • Page 31 Schematic – Main Frame Assembly 042513 CONTACT US AT www.DRpower.com...
  • Page 32 Parts List – Handlebar and Axle Assembly (Non Self Propelled) Note: Part numbers listed are available through DR Power Equipment. Ref# Part# Description Ref# Part# Description 31107 Axle, Welded 31114 Cable, PTO, Snap-On 31117 Screw, HWH, 1/4-20 X .75", Taptite...
  • Page 33 Schematic – Handlebar and Axle Assembly (Non Self Propelled Model) 042513 CONTACT US AT www.DRpower.com...
  • Page 34 Parts List – Handlebar and Axle Assembly (Self Propelled Model) Note: Part numbers listed are available through DR Power Equipment. Ref# Part# Description Ref# Part# Description 32339 Drivetrain 31112 Knob, 2.25" Dia, 5/16-18 Insert 31117 Screw, HWH, 1/4-20 X .75", Taptite 31116 Screw, HWH, 5/16-18 X .75", Taptite...
  • Page 35 Schematic – Handlebar and Axle Assembly (Self Propelled Model) 042713 CONTACT US AT www.DRpower.com...
  • Page 36 Parts List – Drive train Assembly (Self Propelled Model) Note: Part numbers listed are available through DR Power Equipment. Ref# Part# Description Ref# Part# Description 32162 Support, Drive, Self Propel 32341 Collar, Shaft, 1/2", Clamp-On 32167 Bearing Sleeve, 1/2" X 3/4" X 3/4"...
  • Page 37 Schematic – Drive train Assembly (Self Propelled Model) 010714 CONTACT US AT www.DRpower.com...
  • Page 38 Notes: ® TRIMMER/MOWER...
  • Page 39 Notes: CONTACT US AT www.DRpower.com...
  • Page 40  Never store the DR Trimmer/Mower with fuel in the fuel tank inside a building where ignition sources are present, such as hot water and space heaters, clothes dryers and the like. If you are going to drain the fuel tank, do this outdoors. Allow the engine to cool before storing in any enclosure.

This manual is also suitable for:

ProPro-xlPro-xl self-propelledPro xlsp

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