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ROTARY HAMMER
ASSEMBLY AND OPERATING INSTRUCTIONS
Distributed Exclusively by Harbor Freight Tools
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our Web site at http://www.harborfreight.com
TO PREVENT SERIOUS INjURY,
READ AND UNDERSTAND ALL WARNINGS
AND INSTRUCTIONS BEFORE USE.
Copyright
2006 by Harbor Freight Tools
©
manual or any artwork contained herein may be reproduced in any shape or form without
the express written consent of Harbor Freight Tools.
For technical questions please call 1-800-444-3353.
Model 94944
. All rights reserved. No portion of this
®
.
®

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Summary of Contents for Chicago Electric 94944

  • Page 1 2006 by Harbor Freight Tools . All rights reserved. No portion of this © ® manual or any artwork contained herein may be reproduced in any shape or form without the express written consent of Harbor Freight Tools. For technical questions please call 1-800-444-3353.
  • Page 2: Product Specifications

    Failure to follow all instructions listed below may result in electric shock, fire, and/or serious injury. SAVE THESE INSTRUCTIONS WORK AREA Keep your work area clean and well lit. Cluttered benches and dark areas invite accidents. REV 07e SKU 94944 PAGE 2...
  • Page 3: Electrical Safety

    Stay alert. Watch what you are doing, and use common sense when operating a power tool. Do not use a power tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating power tools may result in serious personal injury. SKU 94944 PAGE 3...
  • Page 4 Many accidents are caused by poorly maintained tools. Use only accessories that are recommended by the manufacturer for your model. Accessories that may be suitable for one tool may become hazardous when used on another tool. SKU 94944 PAGE 4...
  • Page 5: Grounded Tools: Tools With Three Prong Plugs

    Your tool must be plugged into an appropriate outlet, properly installed and grounded in accordance with all codes and ordinances. The plug and outlet should look like those in the following illustration. (See Figure A page 6.) SKU 94944 PAGE 5...
  • Page 6: Double Insulated Tools: Tools With Two Prong Plugs

    Underwriters Laboratories, Inc., the Canadian Standard Association, and the National Electrical Code. (See Figure B.) Double insulated tools may be used in either of the 120 volt outlets shown in the following illustration. (See Figure B.) FIGURE B SKU 94944 PAGE 6...
  • Page 7: Extension Cords

    3.5 - 5.0 5.1 - 7.0 7.1 - 12.0 12.1 - 16.0 16.1 - 20.0 FIGURE C * Based on limiting the line voltage drop to five volts at 150% of the rated amperes. SKU 94944 PAGE 7 FIGURE C...
  • Page 8: Specific Safety Rules

    Minute (RPM) SPECIFIC SAFETY RULES Maintain labels and nameplates on the Rotary Hammer. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement. Industrial applications must follow OSHA requirements. Check for damaged parts. Before using this product, carefully check that it will operate properly and perform its intended function.
  • Page 9: Vibration Hazard

    When unpacking, check to make sure all parts shown on the Parts Lists and Assembly Diagrams on pages 15-17 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number shown on the cover of this manual as soon as possible.
  • Page 10 There are two places on the Rotary Hammer that will accept the Side Handle (74) shown below. To attach the Side Handle (74), thread it into the housing by twisting it in a clockwise rotation until it stops turning. Side Handle (74) SKU 94944 PAGE 10...
  • Page 11 How to turn on the Rotary Hammer To turn on the Rotary Hammer squeeze the Switch (107) shown below in Figure 3. There is a latch on the upper part of the switch that locks the switch on. Switch (107) Figure 3 SKU 94944 PAGE 11...
  • Page 12: Important - Read Before Use

    If the Rotary Hammer jumps off of the line or section, release the Switch (107) and reposition the Rotary Hammer. When you are finished, release the Switch (107) and unplug the Rotary Hammer. SKU 94944 PAGE 12...
  • Page 13 The Masonry Drill (118) speed is adjusted by turning the Speed Control Knob (100) See Figure 4. The higher the number the faster the Masonry Bit (118) will spin. The Rotary Hammer will automatically rotate and hammer once you attach the Masonry Bit (118). Speed Control Knob (100) Figure 4 SKU 94944 PAGE 13...
  • Page 14: Inspection, Maintenance, And Cleaning

    Brush House (104). After both Carbon Brushes (105) are inserted, attach the Carbon Brush connector, the Left Tail Cover (96) and the Right Tail Cover (91). See Figure 5 below. Left Tail Cover Left LED Light Figure 5 SKU 94944 PAGE 14...
  • Page 15: Troubleshooting

    Excessive use Allow tool to cool down Gears need grease Add grease to the gears NOTE: Other than changing or cleaning the carbon brushes, all other internal repairs should be done by a qualified service technician. SKU 94944 PAGE 15...
  • Page 16: Parts List

    Front oil Bearing MI Ring Dead block Screw ST4X35 Profiled block Damping Seat Cylinder Damping Spring Black oil bearing Damping closure rail Six Gear Washer Clip Ring O-ring 40x5 Ball Bearing 6002 Piston pin O-ring Piston Gear Cover SKU 94944 PAGE 16...
  • Page 17 Screw ST6X16-F Nut Plank Right Tail Cover Ball Bearing 6000 Ball Bearing Set Housing Screw ST4X14 Left Tail Cover Stretch forward Stretch forward Clip Screw ST4X10 100 Speed Control Knob 101 Screw ST4.8X30 102 Screw ST4X18 SKU 94944 PAGE 17...
  • Page 18: Assembly Diagram

    ASSEMBLY DIAGRAM SKU 94944 PAGE 18...
  • Page 19: Warranty

    WARRANTY LIMIteD 90 DAy wARRAnty Harbor Freight Tools Co. makes every effort to assure that its products meet high quality and durability standards, and warrants to the original purchaser that this product is free from defects in materials and workmanship for the period of ninety days from the date of purchase. This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence or accidents, repairs or alterations outside our facilities, or to lack of maintenance.

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