® 6 IN 1 AIR FRAMING NAILER Model 91044 ASSEMBLY and OPERATING INSTRUCTIONS 3491 Mission Oaks Blvd., Camarillo, CA 93011 Visit our Web site at http://www.harborfreight.com TO PREVENT SERIOUS INJURY, READ AND UNDERSTAND ALL WARNINGS AND INSTRUCTIONS BEFORE USE. Copyright© 2004 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 Air Inlet Recommended Air Pressure Maximum Air Pressure Nail Type 1/4” NPT 70-125 PSI * 125 PSI Approx. 10 Gauge (0.113 & 0.131” Dia.) Clipped or Full Head Nails 2-3/16” - 3-1/2” Length Safety Feature Full Sequential Actuation Magazine Capacity 21° - 60 Qty., 28° and 34° - 100 Qty. Air Consumption 8-12 CFM @ 90 PSI Includes: 21° Full Head Nails - 50 Qty., 28° Clip Head Nails - 50 Qty., 34° Clip Head Nails - 80 Qty., Goggles, Wrenches, and Case.
8. Do not overreach. Keep proper footing and balance at all times. Do not reach over or across running machines or air hoses. 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 handle must be kept clean, dry, and free from oil and grease at all times.
22. Fire fasteners into an appropriate work surface only. Do not attempt to fire fasteners into surfaces too hard to penetrate. Do not drive fasteners on top of other fasteners, or at too steep of an angle. Fasteners can ricochet causing personal injury. 23. Do not fire fasteners too close to the edge of a workpiece. They may split the workpiece and fly free, causing personal injury. 24. Disconnect air supply before loading Nailer.
Unpacking When unpacking, check to make sure the parts listed on page 11 are included. If any parts are missing or broken, please call Harbor Freight Tools at the number on the cover of this manual as soon as possible. Operation 1/4” NPT Nailer 1. You will need to prepare a 1/4” air connector (sold separately) to connect to the air inlet on the Nailer. First, wrap the 1/4” air connector (not included) with pipe thread seal tape before threading it into the Air Inlet (90).
Operation Testing the Full Sequential Safety Trip Mechanism Warning: Even though the nailer should be empty during this procedure, ALWAYS point the nailer at a piece of scrap wood when testing. 1. Make sure the tool is disconnected from the power supply. 2. Completely empty the Magazine (76) of nails. 3. The Nailer should not fire if the Safety (41) is not depressed against the workpiece. 4. Make sure the Trigger (47) and Safety (41) move freely, without sticking. 5.
Operation (continued) Warning! Disconnect the Nailer from the air compressor whenever loading or servicing. FIGURE 2 FIGURE 1 Exhaust Cover (4) Tab (70) Trigger (47) Air Inlet (90) Latch (83) Safety (41) Magazine (76) FIGURE 4 FIGURE 3 Adjustment Knob (81) Angle Adjustment Holes Tab (70) Hex Bolt 21o 28o 34o FIGURE 6 FIGURE 5 28o/34o 34o 28o Pin in B 28o /34o Position 21o Plate (80) Pin in A 21o Position 21o REV 04/06 SKU 91044 For technical questions, please call 1-800-444-3353.
Operation (continued) Operating the Nailer Note: The Nailer may not work if there are only 2 or 3 nails left-see Note on page 6, bottom. 1. Set the proper angle of the Nailer for your application (a three step process): a. Pull back and engage the Tab (70), exposing three adjustment holes. Loosen the hex bolt and slide it into the appropriate hole (21°, 28°, 34°). Retighten the hex bolt securely, making sure it fits into the appropriate hole properly. See FIGURE 3. Gently release the Tab (70). b.
Anytime any maintenance or repairs are done (including clearing jams), FIRST: 1. 2. 3. 4. Disconnect the Nailer from the air hose. Empty the Magazine (76) completely. Attempt to fire the Nailer into a piece of scrap wood to ensure that it is disconnected and is incapable of firing any nails. Always leave the Magazine (76) open during maintenance. The Magazine is springloaded and may cause parts or a nail to fly out of the Nailer. Clearing Jams 1. Disconnect tool from air hose.
Troubleshooting Any internal repair should be performed by an authorized service technician. Symptom Cause Solution Top of tool or Trigger (47) leaks air Loose Screws, Worn or damaged O-rings or seals Verify screws are tight, Check/replace O-rings or seals Sluggish operation, or will not operate Inadequate air supply, Inadequate lubrication, Worn/damaged O-rings or seals Use a compressor that delivers the proper CFM, Add air tool oil (not incl.
Parts List Part Description Part Description Part Description 1 Screw 31 Screw 61 Bushing 2 Spring Washer 32 Washer 62 Screw 3 Bushing 33 Pin 63 Washer 4 Exhaust Cover 34 Pin 64 Turn Plate B 5 Seal 35 Guide Plate 65 Bushing 6 Screw 36 Spring 66 Coil Spring 7 Spring Washer 37 Screw 67 Coil Spring Base 8 Cylinder Cap 38 Bracket A 68 Pin 9 Gasket 39 Washer 69 Screw 10 O-ring 40 Screw 70 Tab 11 O-ring 41 Safety (Bracket B) 71 Feeder Shoe 12
Assembly Drawing REV 06/05 SKU 91044 For technical questions, please call 1-800-444-3353.
