Only use accessories intended for use with this product. Approved accessories are available from Harbor Freight Tools. 13. Maintain this product with care. Keep this product clean and dry for better and safer performance. For your safety, service and maintenance should be performed regularly by a qualified technician. 14. Use the right tool for the job. Do not attempt to force a small tool to do the work of a larger industrial tool. There are certain applications for which this tool was designed. It will do the job better and more safely at the capacity for which it was intended. Do not modify this tool, and do not use this tool for a purpose for which it was not intended. 15. Maintain a safe working environment. Keep the work area well lit. Make sure there is adequate surrounding work space. Always keep the area free of obstructions, grease, oil, trash, and other debris. Use this product only in a well ventilated area. SKU 90590 PAGE 3 16. Before each use, always check all connections and joints to make sure no air leaks are present. Also check air hoses for cracks or excessive wear. Always replace a damaged hose. 17. Maintain labels and nameplates on this product. These carry important information. If unreadable or missing, contact Harbor Freight Tools for a replacement. 18. Always disconnect the Air Regulator from its air supply source before performing any maintenance on the Air Regulator. 19. WARNING! The brass components of this product contain lead, a chemical known to the State of California to cause birth defects (or other reproductive harm). (California Health & Safety Code 25249.5, et seq.) 20. Always read and adhere to all safety warnings and instructions provided in the instruction manual of the spray paint equipment being used. 21. WARNING! The warnings, precautions, and instructions discussed in this manual cannot cover all possible conditions and situations that may occur. The operator must understand that common sense and caution are factors, which cannot be built into this product, but must be supplied by the operator. UNPACKING When unpacking, check to make sure all the parts shown on the Parts List (page 7) 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. PRODUCT DESCRIPTION 1. The Air Regulator is designed for use on paint spray guns. The Regulator’s stop feature prevents surges while spraying to keep an even coat and improve the paint finish. ASSEMBLY INSTRUCTIONS NOTE: For additional references to the parts listed on the following pages, refer to the Assembly Diagram (page 7). 1. Proper use of the Air Regulator requires that it be directly attached to the air intake of the spray gun. To do so, wrap about 3” of pipe thread seal tape (not included) around the male threads of the Spray Gun. Then, wrench SKU 90590 PAGE 4 tighten the Air Diaphragm Regulator into the air intake of the spray gun. (See Figure A.) SPRAY PAINT GUN NOT INCLUDED. ADAPTER (#13) ADJUSTING KNOB (#1) PRESSURE GAUGE (#14) CONNECT AIR SUPPLY HOSE FIGURE A TO COUPLER (not included) OPERATING INSTRUCTIONS 1. NOTE: Before starting, make sure to refer to both the spray gun and paint manufacturers’ instruction manualsto determine the proper level of air pressure required for each specific painting job that is to be performed. 2. To use the Air Regulator, turn its Adjusting Knob counterclockwise all the way. (See Figure A.) Apply several wraps of sealant tape to the threads of #13 Adapter. Then install a 1/4” NPT or 1/4” NPS coupler plug (not included) on the Adapter, and wrench tighten. 3. Connect the air supply hose to the Coupler (not included) of the Air Regulator. Then, turn on the air compressor. (See Figure A.) 4. IMPORTANT: The air pressure of the Air Regulator may be adjusted from 0 to 160 PSI. To increase the level of PSI, turn the Adjusting Knob (part #1) clockwise. To decrease the level of PSI, turn the Adjusting Knob counterclockwise. (See Figure A.) 5. Turn the Adjusting Knob (part #1) clockwise to raise the air pressure to the desired level as indicated on the Pressure Gauge (part #14). (See Figure A.) 6. Make sure to spray wastematerial for several seconds prior to starting the actual job. This allows you to properly adjust the spray gun and, if necessary, re-adjust the level of air pressure using the Adjusting Knob (part #1). SKU 90590 PAGE 5 7. When finished painting, turn off the air compressor. Squeeze the trigger of the spray gun for several seconds to release all compressed air from the system. Then, disconnect the air supply hose from the Air Regulator. (See Figure A.) INSPECTION, MAINTENANCE, AND CLEANING 1. Before each use, inspect the general condition of the Air Regulator. loose connections and joints, cracked, or broken parts, excessively worn air supply hose, and any other condition that may affect the safe and proper operation of the Regulator. If a problem occurs, have the problem corrected be...