3” Air cut-off tool With 5” extension Model 67996 Set up and Operating Instructions Visit our website at: http://www.harborfreight.com Read this material before using this product. Failure to do so can result in serious injury. Save this manual. Copyright© 2010 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.
NOTICE is used to address practices not related to personal injury. Save This Manual Keep this manual for the safety warnings and precautions, assembly, operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the back of the manual near the assembly diagram (or month and year of purchase if product has no number). Keep this manual and the receipt in a safe and dry place for future reference.
for appropriate conditions will reduce personal injuries. and safer at the rate for which it was designed. c. Prevent unintentional starting. Ensure the switch is in the off-position before connecting to power source and/or battery pack, picking up or carrying the tool. Carrying air tools with your finger on the switch or energizing air tools that have the switch on invites accidents. b. Do not use the air tool if the switch does not turn it on and off.
and specifications provided with this air tool. Failure to follow all instructions listed below may result in electric shock, fire and/or serious injury. 2. Operations such as grinding, sanding, wire brushing or polishing are not recommended to be performed with this air tool. Operations for which the air tool was not designed may create a hazard and cause personal injury. 3. Do not use accessories which are not specifically designed and recommended by the tool manufacturer.
12. Do not run the air tool while carrying it at your side. Accidental contact with the spinning accessory could snag your clothing, pulling the accessory into your body. 13. Regularly clean the air tool’s air vents. The motor’s fan will draw the dust inside the housing and excessive accumulation of powdered metal may cause electrical hazards. 14. Maintain labels and nameplates on the tool. These carry important safety information. If unreadable or missing, contact Harbor Freight Tools for a replacement.
maximum control over kickback or torque reaction during start-up. The operator can control torque reactions or kickback forces, if proper precautions are taken. 2. Never place your hand near the rotating accessory. Accessory may kickback over your hand. 3. Do not position your body in the area where air tool will move if kickback occurs. Kickback will propel the tool in direction opposite to the wheel’s movement at the point of snagging. 4. Use special care when working corners, sharp edges etc.
3. When wheel is binding or when interrupting a cut for any reason, switch off the air tool and hold the air tool motionless until the wheel comes to a complete stop. Never attempt to remove the cut-off wheel from the cut while the wheel is in motion otherwise kickback may occur. Investigate and take corrective action to eliminate the cause of wheel binding. 4. Do not restart the cutting operation in the workpiece. Let the wheel reach full speed and carefully reenter the cut.
Specifications Max. Air Pressure 90 PSI Air Consumption 4 CFM @ 90 PSI Air Inlet 1/4” - 18 NPT (Female) Max. Rated Speed 18,000 RPM Arbor Size 3/8” Cutting Disc Size 3” Accessories Hex Key Wrench Spanner Air Supply To prevent explosion: Use only clean, dry, regulated, compressed air to power this tool. Do not use oxygen, carbon dioxide, combustible gases, or any other bottled gas as a power source for this tool. Unpacking When unpacking, make sure that the item is intact and undamaged.
Coupler of an hose (not included) onto the Quick Connector. WARNING! To prevent serious injury from accidental operation: Do not install a female quick coupler on the tool. Such a coupler contains an air valve that will allow the air tool to retain pressure and operate accidentally after the air supply is disconnected. Note: Residual air pressure should not be present after the tool is disconnected from the air supply.
2. Use Spanner (44) to hold Spindle (35) in place while, at the same time, loosening the Hex Bolt (41) and Flange (40) with Hex Key Wrench (45). See Figure 1, below. 3. Insert 3” Cutting Wheel onto Spindle, using Spanner to hold Spindle in place. 4. Insert the Hex Bolt through the Washer (40) and the Cutting Wheel, and back into the Spindle. 5. Use the Hex Key Wrench (45) to tighten the Hex Bolt on the Spindle until the Cutting Wheel is secure.
5. Set the compressor to 90 PSI. Do not exceed 90 PSI. 6. Connect the Air Line to the Tool as explained in the Air Supply section. 7. Mark area on workpiece you wish to cut. 8. Grip Housing (3) and press down on Trigger (4), pressing Lever’s safety lock forward. WARNING! Use both hands to grip the Cut-Off Tool. 9. Allow Cut-Off Tool to run for a few seconds before approaching workpiece. 10. NOTE: The Cut-Off Tool’s speed is variable. Pressing down on Trigger will increase Tool’s speed.
the air supply according to component manufacturers’ instructions. The lubricator’s oil level needs to be maintained and the moisture filter must be regularly drained. Performing routine maintenance on the air supply will allow the tool to operate more safely and will also reduce wear on the tool. User-Maintenance Instructions Procedures not specifically explained in this manual must be performed only by a qualified technician.
Troubleshooting Problem Possible Causes Decreased output. 1. Not enough air pressure and/ or air flow. Likely Solutions 1. Check for loose connections and make sure that air supply is providing enough air flow (CFM) at required pressure (PSI) to the tool’s air inlet. Do not exceed 90 PSI maximum air pressure. 2. Clean around trigger to ensure free movement. 3. Lubricate using air tool oil and grease according to directions. 4. Clean air inlet screen of buildup. 2. Obstructed trigger. 3.
PLEASE READ THE FOLLOWING CAREFULLY The manufacturer and/or distributor has provided the parts list and assembly diagram in this manual as a reference tool only. Neither the manufacturer or distributor makes any representation or warranty of any kind to the buyer that he or she is qualified to make any repairs to the product, or that he or she is qualified to replace any parts of the product.
42 36 32 SKU 67996 For technical questions, please call 1-800-444-3353.
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.
