DR Trimmer/Mower Sprint Safety & Operating Instructions Manual
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DR Trimmer/Mower Sprint Safety & Operating Instructions Manual

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Summary of Contents for DR Trimmer/Mower Sprint

  • Page 3 And congratulations on your purchase of a new DR TRIMMER/MOWER ™ ® We have done our utmost to ensure that your DR will be one of the most trouble-free and satisfying pieces of equipment you have ever owned. Please let us know of any questions or problems you may have.

  • Page 4: Safety Instructions

    Use extra caution when mowing in wet, slippery conditions. • ® As with any trimmer, the tips of the cutting cords on the DR TRIMMER/MOWER ™ throw sticks, small stones, gravel, and bits of debris over long distances at great velocity.

  • Page 5: Safety With Gasoline-Powered Machines

    Never allow children or animals near the work area. Keep at least 50 feet clear of bystanders, and always turn the machine off when someone approaches to avoid causing injury from thrown objects. • ® Never allow children or people unfamiliar with these instructions to use the DR TRIMMER/MOWER ™ • ®...

  • Page 6: Table Of Contents

    DJUST THE EVER ..........................21 EMOVE THE HIELD ............................21 EMOVE THE HEELS TROUBLESHOOTING ............................22 PARTS LIST ................................24 SCHEMATIC DRAWINGS............................. 26 ® ™ DAILY CHECKLIST FOR THE DR TRIMMER/MOWER ............ BACK COVER ® ™ TRIMMER/MOWER Safety & Operating Instructions...

  • Page 7: Setting Up Your Trimmer

    Setting Up Your Trimmer Step 1: Connect the Battery Wires (Electric-Starting models only) To prevent the battery from discharging during shipment, all electric-starting trimmers are shipped with at least one battery wire disconnected. Connect the black wire by pushing the plastic connector onto the negative (-) terminal (Figure 1).
  • Page 8 Controls & Features Note: 3.5 HP Model Shown Figure 3 ® ™ TRIMMER/MOWER Assembly & Operating Instructions...

  • Page 9: Starting & Operating

    Starting & Operating WARNING! 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 DIPSTICK FREQUENTLY TO AVOID OVERFILLING. Electric-Starting (Electric-Starting models only) 1.

  • Page 10: Stopping The Engine

    3. Grasp the recoil starter handle (Figure 3), and slowly pull until resistance is felt. Let the cord retract a little bit, then pull the cord rapidly to start the engine. One or two pulls usually starts ® ™ the DR TRIMMER/MOWER , but it may be necessary to repeat the priming. Stopping the Engine Move the throttle control lever (Figure 3) back to the STOP position.
  • Page 11 When using your PTA along garden edges, fences, and buildings, we recommend making your ™ ® first pass with the DR TRIMMER/MOWER ™ in the regular mowing position, staying 4 to 8 inches from the obstacle. Then, return for another pass with the machine in PTA mode.

  • Page 12: Cutting Cords

    Cutting Cords WARNING! Always turn the engine off when installing or changing cutting cords. Figures 9 and 10 illustrate how the cords are installed on the line plates. It may look complicated, but once you've done it a couple of times it's really very easy. There are two sets of installation points on each line plate, 180 degrees apart.
  • Page 13 Cord Installation The standard cord installation method is shown in Figures 11-13. This is how your trimmer is shipped from the factory. 1. Insert the ends of the cords into the openings in the line plate, as shown in Figures 10 and 11. There are different sized arrows at the insertion points to indicate what size cords fit the holes.

  • Page 14: Cord Tips

    Cord Tips ® Two thicknesses of cutting cord ship with your DR TRIMMER/MOWER : Heavy-Duty (130 ™ mil) and Extra Heavy-Duty (155 mil). Because conditions and vegetation vary so much, experiment with the different cord weights in order to discover what works best for your particular mowing and trimming situations.

  • Page 15: Height

    In order to achieve the best and smoothest cut, do not lift up on the handlebar while ® operating your DR TRIMMER/ MOWER . Lifting the handlebar causes ™ weight to be forced down on the Mow- ™...

  • Page 16: Obstacles

    PTA function. Please see page 21. Obstacles Many Owners like to mow easy, open areas with their regular riding or walk- behind mower, then they finish trimming all the odd and hard-to-reach spots with ® the DR TRIMMER/MOWER (Figure ™ 17). ® The DR TRIMMER/MOWER ™...

  • Page 17: Heavy Growth

    DR TRIMMER/ ® MOWER to mow wet or heavy growth. The DR ™ be used in damp conditions—after a rain or in the early morning dew—without clogging or stalling. You can also mow wet areas such as ditches and around ponds (Figure 19).

  • Page 18: Slopes

    The machine ejects cut material to its right, so you can use it like a lawn broom to make windrows for easy clean-up. Firebreaks ® Use the DR as a labor-saving tool to cut material when creating firebreaks. End-of-Season Garden Clean-Up ®...

  • Page 19: Maintenance

    *** For engine maintenance, please refer to the engine manufacturer's owner's manual. *** ® ™ IMPORTANT!: Because of the conditions the DR TRIMMER/MOWER is used in, air filters and oil should be changed more frequently than is recommended in your engine manufacturer's owner's manual.

  • Page 20: Battery Care (Electric -Starting Models Only )

    Note: Using the recoil starter and then running the engine will not recharge a dead or significantly discharged battery. To Connect a Battery Charger ® 1. Detach the two battery wires going to the wiring harness on your DR TRIMMER/ ™ MOWER 2.

  • Page 21: Emove The Ow All Upport Ssembly

    • The wiring harness consists of a set of wires that lead from the ignition switch to the battery. Disconnect and reconnect the battery wires (black to black and red to red) and check the wire connections at the key switch. • Call one of our Technical Service Representatives TOLL-FREE 1(800)DR-OWNER(376- 9637) for assistance. ™...
  • Page 22 ™ To Reassemble the Mow-Ball Support Assembly WARNING! Before performing any maintenance procedure, the engine should be stopped and the spark plug wire disconnected. Caution: Improper installation may cause damage to the bearings. Please follow these directions carefully. Reassemble the components in the order shown in Figure 22.

  • Page 23: Assembly

    To Remove the Stone Guard Flap Tools Needed: • 3/8" wrench or socket WARNING! Before performing any maintenance procedure, the engine should be stopped and the spark plug wire disconnected. 1. Remove the nuts on either side of the stone guard and drop it from the frame. 2.

  • Page 24: To Remove And Replace The Belt

    You can access the underside of the Trimmer without having to drain the gas and oil by tilting it back on its handlebar. ® Important! Use only DR Belts for replacement parts. Do not use hardware store variety belts. Figure 25 Tools &...
  • Page 25 5. Loosen idler pulleys #1 and #2 (Figure 29). Remove the bracket from idler pulley #1 in order to remove the belt. 6. Remove the belt. 7. Install the new belt. Make sure the belt is on the INSIDE of idler pulley #2, the OUTSIDE of idler pulley #1 and correctly fitted around the engine pulley.

  • Page 26: Cable

    To Adjust the Belt Tension through the Trimmer Control Cable If the trimmer head stops spinning when the bail bar is engaged and the machine is operating under a heavy load, the belt may be too loose and the trimmer control cable may need to be adjusted to put more tension on it.

  • Page 27: Pta Ever

    ™ To Adjust the PTA Lever WARNING! Before performing any maintenance procedure, the engine should be stopped and the spark plug wire disconnected. ™ It should be easy to engage the PTA Feature. If you've moved the handlebar up or down the ™...

  • Page 28: Troubleshooting

    ⇒ Is the throttle cable attached to the engine and moving freely? ⇒ If your engine still won’t start, call 1(800)DR-OWNER(376-9637) for advice and assistance. ⇒ Have you checked all the items under manual start above? If not, do so.
  • Page 29 Check the operating tips in the section on breaking cords above. ® ⇒ Are you trying to cut material too heavy for the cord? The DR is designed to cut green material up to about the thickness of a pencil. For very heavy ®...

  • Page 30: Parts List

    Parts List Please refer to the schematic drawings on pages 26-27. Ref# Part# Description Ref# Part# Description 143741 Axle Assembly 143511 Brake Arm Assembly 143541 Backup Plate 143521 Brake Connecting Rod 143651 Bail Bar 27 112141 Cable Tie, Nylon, Black, 6" 143671 Bail Bar Stop 28 143981 Cable, Clutch...
  • Page 31 Ref# Part# Description Ref# Part# Description 55 110731 Nut, Nylon Locking, 1/4" 73 120291 Screw, Thread Forming, 1/4" - 20 x 3/4", Gr 2 ZP, Battery 56 118731 Nut, Nylon Locking, 10 - 24" Bracket 57 110751 Nut, Nylon Locking, 3/8" 74 143811 Shield, Inner, Lower, Molded 58 110761...

  • Page 32: Schematic Drawings

    Schematic Drawings Figure 34 Figure 34 ® ™ TRIMMER/MOWER Safety & Operating Instructions...
  • Page 33 Figure 35 Figure 35 ® ™ TRIMMER/MOWER Safety & Operating Instructions...
  • Page 34 Notes ® ™ TRIMMER/MOWER Safety & Operating Instructions...
  • Page 35 ® ™ TRIMMER/MOWER Safety & Operating Instructions...
  • Page 36 ® Daily Checklist for the DR TRIMMER/MOWER ™ ® To help maintain your DR for optimum performance, we recommend you follow this checklist each time you use your machine. GAS: Fill the gas tank with clean, fresh, unleaded gas. OIL: Check the oil level with the dipstick and add more if necessary (only add oil to the level indicated on the dipstick—do not overfill).

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