AIR MICRO DIE GRINDER Model 97870 SET UP AND OPERATING INSTRUCTIONS Diagrams within this manual may not be drawn proportionally. Due to continuing improvements, actual product may differ slightly from the product described herein. Distributed exclusively by Harbor Freight Tools®. 3491 Mission Oaks Blvd., Camarillo, CA 93011 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.
CONTENTS TROUBLESHOOTING ���������������������� 13 SAFETY ALERT SYMBOL AND SIGNAL WORDS ����������������������������� 3 ACCESSORY LIST ���������������������� 14 GENERAL �������������������������������������������3 LIMITED 90 DAY WARRANTY ���� 16 PARTS LIST ��������������������������������� 15 IMPORTANT SAFETY INSTRUCTIONS �������������������������� 3 ASSEMBLY DIAGRAM ���������������� 15 WORK AREA �������������������������������������� 3 PERSONAL SAFETY ������������������������� 4 TOOL USE AND CARE ���
SAVE THIS MANUAL NOTICE is used to address practices not related to personal injury. 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.
tool. Distractions are able to result in the loss of control of the tool. Personal safety a. b. c. d. e. conditions. Wear heavy-duty work gloves during use. g. Always wear eye protection. Wear ANSI-approved safety goggles. h. Always wear hearing protection when using the tool. Prolonged exposure to high intensity noise is able to cause hearing loss. i. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts.
affects the tool’s operation. If damaged, have the tool serviced before using. Many accidents are caused by poorly maintained tools. There is a risk of bursting if the tool is damaged. Tool use and care a. Use clamps or another practical way to secure and support the workpiece to a stable platform. Holding the work by hand or against the body is unstable and is able to lead to loss of control. b. Do not force the tool. Use the correct tool for the application.
b. Never use oxygen, carbon dioxide, combustible gases or any bottled gas as an air source for the tool. Such gases are capable of explosion and serious injury to persons. SAVE THESE INSTRUCTIONS. SYMBOLS AND SPECIFIC SAFETY INSTRUCTIONS Symbol Definitions Symbol no Property or statement No-load speed ...
ductive harm). (California Health & Safety code § 25249.5, et seq.) 2. 3. Only use with accessories rated to handle the forces exerted by this tool during operation. Accessories not designed for the forces generated may break and forcefully launch pieces. Attach all accessories properly to the tool before connecting the air supply. A loose accessory may detach or break during operation. 4. Obey the manual for the air compressor used to power this tool. 5.
FUNCTIONAL DESCRIPTION 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. Specifications Exhaust Position On/Off Method Frontal Exhaust Built-in Rotary Valve 1/4" -18 NPT (male inlet coupler) Air Inlet Maximum Speed* 25,000 RPM Air Consumption 2 CFM @ 90 PSI Collet Size 1/8" * Maximum speed at stated maximum air pressure.
ponents, such as a connector and quick coupler, will make operation more efficient, but are not required. 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: Air flow, and therefore tool performance, can be hindered by undersized air supply components. 3.
OPERATING INSTRUCTIONS Read the ENTIRE IMPORTANT SAFETY INFORMATION section at the beginning of this manual including all text under subheadings therein before set up or use of this product. Inspect tool before use, looking for damaged, loose, and missing parts. If any problems are found, do not use tool until repaired. 2. Work Piece and Work Area Set Up 1. Designate a work area that is clean and well-lit. The work area must not allow access by children or pets to prevent injury and distraction. 2.
5. Turn the Control Ring (3) slowly to the “ON” position to begin grinding or cutting. The more you turn the knob, the higher the RPM. 6. If the tool requires more force to accomplish the task, verify that the tool receives sufficient, unobstructed airflow (CFM) and increase the pressure (PSI) output of the regulator up to the maximum air pressure rating of this tool. CAUTION! TO PREVENT TOOL AND ACCESSORY FAILURE, RESULTING IN INJURY: Do not exceed the tool’s maximum air pressure rating.
USER-MAINTENANCE INSTRUCTIONS Procedures not specifically explained in this manual must be performed only by a qualified technician. explained as part of the regular operation of the air-operated tool. 1. TO PREVENT SERIOUS INJURY FROM ACCIDENTAL OPERATION: Turn off the tool, detach the air supply, safely discharge 2. any residual air pressure in the tool before performing any inspection, maintenance, or cleaning procedures. TO PREVENT SERIOUS INJURY FROM TOOL FAILURE: Do not use damaged equipment.
Troubleshooting Problem Possible Causes Decreased output. 1. Not enough air pressure and/ or air flow. 2. Obstructed valve. 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 maximum air pressure. 2. Clean around valve to ensure free movement. 3. Lubricate using air tool oil and grease according to directions. 4. Clean air inlet screen of buildup. 3.
ACCESSORY LIST Part 23 24 Description Function Tighten/loosen Clamping Nut (22) and Collet Collet Nut Wrenches Holder (18) for bit installation and removal. Plug into pressure Male Coupler Plug source. *SKU or part number may not be available for some accessories. 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.
PARTS LIST Part 1 2 3 4 5 6 7 8 9 10 11 12 Description Rear End Holder Screw Control Ring O-ring O-ring Pin Hose Plug Intake Plate Ball Bearing Pin Bearing Plate Rotor PARTS LIST Q’ty 1 1 1 2 1 1 1 1 1 1 1 1 Part 13 14 15 16 17 18 19 20 21 22 23 24 Description Rotor Blade Cylinder Spacer Lateral Disc Ball Bearing Collet Holder Sleeve Front Cover Collet, 1/8" Clamping Nut Collet Nut Wrenches (not shown) Male Coupler Plug (not shown) Q’ty Set 1 1 1 1 1 1 1 1 1 2 1 ASSEMBLY DIAGRAM Record Product’s Se
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.
