Table of Contents
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Owner's Manual &
Safety Instructions
21i
Model
HE66
7" – 9" 15A Large Angle Grinder
WARNING: To prevent serious injury, User must read and
understand Owner's Manual. SAVE THIS MANUAL.
When unpacking, make sure that the product is intact and undamaged.
If any parts are missing or broken, please call 1-888-866-5797 as
soon as possible. Reference 57363 UPC 792363573634.
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Table of Contents
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Summary of Contents for Hercules HE66
- Page 1 Owner’s Manual & Safety Instructions Model HE66 7" – 9" 15A Large Angle Grinder WARNING: To prevent serious injury, User must read and understand Owner’s Manual. SAVE THIS MANUAL. When unpacking, make sure that the product is intact and undamaged.
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Page 2: Important Safety Information
IMPORTANT SAFETY INFORMATION GENERAL POWER TOOL SAFETY WARNINGS Personal Safety Read all safety warnings and all instructions. 1. Stay alert, watch what you are doing and use Failure to follow the warnings and instructions may common sense when operating a power tool. Do result in electric shock, fire and/or serious injury. - Page 3 3. Do not use accessories which are not Power Tool Use and Care specifically designed and recommended by the tool manufacturer. Just because the 1. Do not force the power tool. Use the accessory can be attached to your power tool, correct power tool for your application.
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Page 4: Kickback And Related Warnings
11. Position the cord clear of the spinning 24. The warnings, precautions, and instructions accessory. discussed in this instruction manual cannot cover all If you lose control, the cord may be cut or possible conditions and situations that may occur. snagged and your hand or arm may be It must be understood by the operator that pulled into the spinning accessory. -
Page 5: Safety Warnings Specific For Grinding And Abrasive Cutting-Off Operations
3. When wheel is binding or when interrupting a Safety Warnings Specific cut for any reason, switch off the power tool for Grinding and Abrasive and hold the power tool motionless until the wheel comes to a complete stop. Never attempt Cutting-off Operations to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback... -
Page 6: Vibration Safety
Vibration Safety Grounded Tools: Tools with Three Prong Plugs This tool vibrates during use. Repeated or long-term exposure to vibration may cause temporary or permanent physical injury, particularly to the hands, arms and shoulders. To reduce the risk of vibration-related injury: 1. - Page 7 Extension Cords Symbology 1. Grounded tools require a three wire extension cord. Double Insulated tools can use either Double Insulated a two or three wire extension cord. 2. As the distance from the supply outlet increases, Volts you must use a heavier gauge extension cord. Using extension cords with inadequately sized wire Alternating Current causes a serious drop in voltage, resulting in loss of...
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Page 8: Specifications
Specifications Adjusting the Wheel Guard Electrical Rating 120VAC / 60Hz / 15A Rated Speed 6500/min TO PREVENT SERIOUS INJURY: Do not operate this tool without the Spindle Thread 5/8"-11 TPI Wheel Guard properly installed. Accessory (Wheel Guards) 7" (180mm) 1. Pull out the Wheel Guard Lock Lever. Diameters 9"... - Page 9 2. Press in and hold the Spindle Lock to Installing a Non-threaded Grinding Wheel prevent the Spindle from turning. or Cut-Off Wheel (wheels sold separately) 3. Remove the Flange Nut. Keep the Flange in position on the Spindle. 1. For a Grinding Wheel, it MUST be: •...
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Page 10: Workpiece And Work Area Set Up
3. Secure loose workpieces using a vise or clamps Workpiece and Work Area Set Up (not included) to prevent movement while working. 1. Designate a work area that is clean and well-lit. 4. There must not be hazardous objects, such The work area must not allow access by children as utility lines or foreign objects, nearby that or pets to prevent distraction and injury. -
Page 11: General Operation
For abrasive cutting-off operations, General Operation apply the cut-off wheel straight into the work material using only the edge of the wheel, allowing the tool to operate at full speed. If the tool bogs down, use lighter pressure. TO PREVENT SERIOUS INJURY: Grip the tool firmly in both hands. -
Page 12: Maintenance And Servicing
Cleaning, Maintenance, MAINTENANCE AND SERVICING and Lubrication Procedures not specifically explained 1. BEFORE EACH USE, inspect the general in this manual must be performed condition of the tool. Check for: only by a qualified technician. • loose hardware • misalignment or binding of moving parts TO PREVENT SERIOUS INJURY FROM •... -
Page 13: Troubleshooting
Troubleshooting Problem Possible Causes Likely Solutions Tool will not start. 1. Cord not connected. 1. Check that cord is plugged in. 2. No power at outlet. 2. Check power at outlet. If outlet is unpowered, turn off tool and check circuit breaker. If breaker is tripped, make sure circuit is right capacity for tool and circuit has no other loads. -
Page 14: Parts List And Diagram
PARTS LIST AND DIAGRAM Parts List Part Description Part Description Spindle Lock Bearing Washer, Ø22 Retainer, 37mm Self-Locking Spring Rotor Gear Box Retainer O-Ring Bearing, 608-V1 Self-Locking Pin Bearing Bushing Bearing, 6000-2RS Rubber Pin Air Deflector Screw, ST5 x 65 Retainer,14MM Stator Large Gear... -
Page 15: Assembly Diagram
Assembly Diagram Item 57363 For technical questions, please call 1-888-866-5797. Page 15... -
Page 16: Limited 90-Day 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 90 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, criminal activity, improper installation, normal wear and tear, or to lack of maintenance.
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