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CentralPneumatic 68020 - User Manual

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ITEM 68020
34° angle
finish nailer
Visit our website at: http://www.harborfreight.com
Email our technical support at: tech@harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright
©
2010 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. Due to continuing
improvements, actual product may differ slightly from the product described herein.
Tools required for assembly and service may not be included.
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-800-444-3353 as soon as possible.
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.
Owner’s Manual & Safety Instructions
REV 12b

Table of Contents

Questions and Answers

  • J
    John GrossJul 31, 2025
    Why is my CentralPneumatic 68020 Nail Gun not driving nails deep enough?
    • S
      Steven RiceJul 31, 2025
      If your CentralPneumatic Nail Gun isn't driving fasteners deep enough, first adjust the depth setting if your tool has one. Then, check your air supply to ensure proper pressure (PSI) at the tool's inlet, without exceeding the maximum. Also, ensure the tool is correctly lubricated with air tool oil and grease. Check for and clean any buildup on the air inlet screen, if equipped. Finally, a qualified technician may need to clean and lubricate the internal mechanism, and you might need to install an in-line filter.
  • S
    Sierra LloydAug 10, 2025
    How to fix CentralPneumatic 68020 driving fasteners too deeply?
    • T
      Travis MartinAug 10, 2025
      If your CentralPneumatic Nail Gun is driving fasteners too deeply, the first step is to adjust the depth setting, if your tool has one. If the issue persists, reduce the air supply pressure (PSI).
  • A
    Anthony DavisAug 19, 2025
    What to do if my CentralPneumatic 68020 has severe air leakage?
    • J
      Julian GalvanAug 19, 2025
      To resolve severe air leakage in your CentralPneumatic Nail Gun (remember that slight leakage is normal, especially in older tools), start by checking for misaligned components and uneven gaps, which indicates cross-threading. If found, disassemble and replace the damaged parts. Then, tighten the housing assembly; if it won't tighten properly, the internal parts might be misaligned. If the valve is dirty, worn, or damaged, clean or replace the valve assembly. If these steps don't solve the issue, replace any other damaged components.

Summary

Owners Manual & Safety Instructions

Manual Retention

Keep manual and receipt for future reference.

Warning Symbols and Definitions

Hazard Alert Symbol Definitions

Explains hazard alert symbols like Danger, Warning, Caution, and Notice.

Technical Symbol Definitions

Defines symbols for pressure (PSI), flow (CFM), and thread types (NPT, NPS).

Important Safety Instructions

General Safety Practices

Reduce risks of electric shock, fire, and injury by following instructions.

Work Area Safety

Maintain clean, well-lit area; keep bystanders away.

Personal Safety Precautions

Stay alert, dress properly, avoid unintentional starts, use safety equipment.

Tool Use and Care

Proper Tool Usage

Secure workpieces, do not force tool, maintain balance.

Service and Maintenance

Emphasizes service by qualified personnel using identical replacement parts.

Air Source Requirements

Use clean, dry, regulated air; avoid oxygen, CO2, combustible gases.

Specific Safety Instructions

Safe Operation Practices

Details on trigger control, fastener firing, workpiece interaction, and transport.

Tool Overview and Specifications

Vibration Precautions

Advice on medical checks, no smoking, glove use, light grip to minimize vibration effects.

Functional Description and Components

Details tool purpose and identifies major parts like Safety Nosepiece, Trigger, Magazine.

Technical Specifications

Max air pressure, air inlet, fastener capacity, air consumption.

Initial Tool Set Up

Air Supply Setup

Connect filter, regulator, oiler; set pressure; check for leaks.

Operating Instructions

Work Area and Workpiece Setup

Prepare clean, well-lit area; secure workpieces.

Safety Trip Mechanism Testing

Test tool to ensure Safety Nosepiece and Trigger prevent accidental firing.

Loading the Tool

Pre-Loading Safety Checks

Wear eye protection, release trigger, detach air supply before loading.

General Operating Instructions

Tool Operation and Post-Use

Operate tool correctly, adjust depth/pressure, clean, store after use.

User-Maintenance Instructions

Pre-Maintenance Safety Warnings

Safety precautions before maintenance/repairs, including tool disabling.

Clearing Jams

Procedure for Clearing Jams

Steps to remove jammed fasteners using pliers or probing.

Troubleshooting

Common Problems and Solutions

Addresses depth, jamming, air leaks with causes and fixes.

Parts List and Diagram

Parts List

Comprehensive list of replacement parts with part numbers.

Assembly Diagram

Limited 90 Day Warranty

CentralPneumatic 68020 Specifications

General IconGeneral
BrandCentralPneumatic
Model68020
CategoryNail Gun
LanguageEnglish

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