3-IN-1 AIR FRAMING NAILER 98751 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© 2008 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. Diagrams within this manual may not be drawn proportionally.
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.
tool. Distractions are able to result in the loss of control of the tool. Personal safety a. b. c. d. e. f. Stay alert. Watch what you are doing and use common sense when operating the tool. Do not use the tool while tired or under the influence of drugs, alcohol, or medication. A moment of inattention while operating the tool increases the risk of injury to persons. Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep hair, clothing, and gloves away from moving parts.
cleat nails or staples into surfaces too hard to penetrate. Do not drive cleat nails or staples on top of other cleat nails or staples, or at too steep an angle. Cleat nails and staples can ricochet, causing personal injury. Never fire this tool into the air or point it toward yourself or another person. f. Hold tool away from head and body during use. Tool may kick back, causing injury. g. Do not fire fasteners too close to edge of workpiece.
the tool that the air source has been adjusted to the rated air pressure or within the rated air-pressure range. b. Symbol Definitions Symbol WARNING marking concerning Risk of Hearing Loss. Wear hearing protection. 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. WARNING marking concerning Risk of Respiratory Injury. Wear NIOSHapproved dust mask/respirator.
particles. (California Health & Safety Code § 25249.5, et seq.) 1. Anyone using vibrating tools regularly or for an extended period should first be examined by a doctor and then have regular medical checkups to ensure medical problems are not being caused or worsened from use. Pregnant women or people who have impaired blood circulation to the hand, past hand injuries, nervous system disorders, diabetes, or Raynaud’s Disease should not use this tool.
FUNCTIONAL DESCRIPTION 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 Air Pressure Range 70-120 PSI Maximum Air Pressure 120 PSI Air Inlet 1/4” -18 NPT Magazine Capacity .113”-.
SKU 98751 A B C D E F G H Air Hose Filter Regulator Lubricator (optional) Coupler and Plug Leader Hose (optional) Air Cleaner / Dryer (optional) Air Adjusting Valve (optional) Description Non-lubricated Tools A Lubricated Tools B B C C A Function A E E F H Connects air to tool Prevents dirt and condensation from damaging tool or work piece Adjusts air pressure to tool For air tool lubrication Provides each connections Increases coupler life Prevents water vapor from damaging work piece For
B A SKU 98751 A B C D E F G H I J K L M N O Description F E F Vibration Pads Anchor Bolts Ball Valve Isolation Hose Main Air Line - 3/4” minimum recommended Ball Valve Branch Air Line -1/2” minimum recommended Filter Air Cleaner / Dryer (optional) Regulator Lubricator Air Hose Coupler and Plug Air Adjusting Valve Leader Hose B A C D G H H J I K J L Function L M M O N For noise and vibration reduction Secures air compressor in place Isolates sections of system for maintenance For vibr
an air valve that will allow the air tool to retain pressure and operate accidentally after the air supply is disconnected. Operation 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. Note: Air flow, and therefore tool performance, can be hindered by undersized air supply components. 3.
lift the Nailer and press it against the workpiece again. The tool must not cycle (fire). If it fails to perform in the manner explained in bold, have it repaired by a qualified service technician. Air Coupler (95) Trigger (59) WARNING! Disconnect the Nailer from the air compressor whenever loading or servicing. Magazine (79) Figure 1 3. The Nailer should not fire if Safety Nosepiece (42) is not depressed against the workpiece. 4.
of nails into the Magazine behind the few remaining nails and the Nailer will be ready for further use. 34o 28o 21o Operating Nailer Set proper angle of the Nailer for your application (a three step process): Joint Plate (86) Figure 5 Move Magazine so desired hole on Joint Plate (86) lines up with the nut on Magazine. See Figure 5, above. Replace and tighten the Adjuster Knob. Failure to properly adjust the nailer can result in tool failure or damage. Angle Adjustment Holes Hex Bolt 21o 28o 34o 3.
3. 4. 5. b. Empty the Magazine (79) completely. To fire, place the Safety Nosepiece of the Nailer on the workpiece. The Nailer should not fire if the Safety Nosepiece is not depressed. Once depressed, quickly squeeze the Trigger once. Do not fire repeatedly; nails could bounce off of one another causing injury. We recommend practicing with a piece of scrap material. The Rubber Cover (43) provides a non-marring surface. If desired, the Rubber Cover may be removed to expose the teeth on Safety Nosepiece.
force. Keep your fingers clear when releasing. 5. TO PREVENT EXPLOSION: Lubricate the tool only with specified lubricants. Lubricate the air inlet using only pneumatic tool oil. Lubricate the internal mechanism using only white lithium grease. Other lubricants may damage the mechanism and may be highly flammable, causing an explosion. If you are unable to clear the nail jam using the method prescribed above, the tool should be taken to a qualified service technician for proper servicing.
Troubleshooting Problem Possible Causes Likely Solutions 1. Loose Screw (6). 1. Tighten and recheck. Air leaking in Cylinder Cap (8). 2. Gasket (9) is cracked or worn. 2. Replace Gasket. 1. Tool is too dry. 1. Add about 3 drops of pneumatic tool oil into the Air Coupler (95). Lack of power. Slow to cycle. 2. Air pressure too low. 2. Check to make sure regulator on Low power when shooting and air compressor is set between returning. 70 PSI and 120 PSI. 3. Exhaust blocked. 3. Clean exhaust channel. 1.
Parts List PARTS LIST Part 1 2 3 4 5 6 7 8A 9A 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Description Screw Spring Washer Bushing Exhaust Cover Seal Screw Spring Washer Cylinder Cap O-Ring sealing Washer Valve Seat Spring O-Ring (M57.5 x 3.6) O-Ring (M72.4 x 3.5) Valve Screw Cylinder Seal Collar O-Ring (M54.4 x 4) Driver Cylinder O-Ring (M67 x 3) O-Ring (M60.25 x 2.5) Restrictive Seal O-Ring (M97.5 x 3.
1 2 3 Parts Diagram DIAGRAM ASSEMBLY 4 5 6 16 7 8A 9A Some parts are listed and shown for illustration purposes only, and are not available individually as replacement parts.
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.
