SIPHON FEED SPRAY GUN Model 91011 ASSEMBLY 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© 2003 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.
Specifications Operating & Maximum PSI 50 PSI Paint Capacity 1 Quart Air Consumption Air Inlet Nozzle Size Feed Type 4 CFM @ 50 PSI 1/4” - 18 NPS 1.7mm Siphon Save This Manual You will need the manual for the safety warnings and precautions, assembly instructions, operating and maintenance procedures, parts list and diagram. Keep your invoice with this manual. Write the invoice number on the inside of the front cover. Keep the manual and invoice in a safe and dry place for future reference.
9. Maintain tools with care. Keep tools clean for better and safer performance. Follow instructions for lubricating and changing accessories. Inspect tool cords and air hoses periodically and, if damaged, have them repaired by an authorized technician. The handles must be kept clean, dry, and free from oil and grease at all times. 10. Disconnect air supply. Disconnect air hose when not in use, when changing accessories, and during maintenance. 11. Remove adjusting wrenches.
23. Do not smoke while spraying. Most solvents and coatings are highly flammable, particularly when sprayed. 24. Read all of the information concerning coating products and cleaning solvents. Chlorinated solvents (e.g. 1-1-1 Trichlorethylene and Methylene Chloride, also known as methyl chloride) can chemically react with aluminum and may explode. Many paint sprayers contain aluminum. If you have any doubt about potential chemical reactions, contact the solvent or coating manufacturer. 25.
Operation 1/4” NPS Sprayer For best service you should incorporate a regulator and inline filter, as shown in the diagram above. Hoses, couplers, regulators, and filters are all available at Harbor Freight Tools. 1. You will need to prepare a 1/4” air connector (sold separately) to connect to the air inlet on the Spray Gun. First, wrap the 1/4” air connector (not included) with pipe thread seal tape before threading it into the Air Inlet (33). Connect the 3/8” ID Air Source Hose to the Spray Gun. 2.
Operation (continued) Filling the Cup (26) Warning! The Spray Gun must be disconnected from the air source when filling or refilling material. 1. 2. Remove the Cup (26) from the Spray Gun by pressing the Lever (23) on top of the Cup (26) counterclockwise. Fill the Cup (26) with the appropriate material and turn it counterclockwise while turning the Lever (23) clockwise. See FIGURE 1. FIGURE 1 NOTE: The Lid (43) of the Cup (26) has a small vent hole in it.
Troubleshooting PROBLEM CAUSE 1. Paint too diluted Paint drips on the 2. Improper spray adjustment object being painted 3. Too much air flow 4. Holding Trigger too long 5. Spraying too close Paint Application uneven or irregular 4. 5. 6. 7. 1. Add undiluted product (check viscosity) 2. Increase paint flow by loosening Improper spray adjustment Fluid Adjusting Screw (19) 3. Increase air flow by loosening Air Air flow too weak Adjusting Screw (27) 4.
Parts List Note: Certain parts cannot be ordered separately and must be ordered as part of an entire set. * (41) Air Valve Seat Set includes parts A, B, C, D, E, F, G on the diagram below. * (39) Lid Assembly Set includes part numbers 25, 31, 44, 23, 43, 34, 22, 30, 29, 42 PART NO. DESCRIPTION PART NO.
Assembly Drawing 39 SKU 91011 Page 9
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.