MasterCraft 057-7915-8 - User Manual

NAILER/STAPLER
057-7915-8
Owner’s Manual
PRODUCT SPECIFICATIONS
Rating:
120 V, 60 Hz AC
Amperes:
5 A
Switch:
Single shot trigger with safety lock
Repeat speed:
Up to 20 shots per minute
Staple size:
T50 (1.25x0.6 mm)
Crown: 3/8" (10.6 mm)
Length: 1/4–5/8" (6–16 mm)
Brad nail size:
Gauge: 18
Length: 1/4–5/8” (6–16 mm)
Magazine capacity:
Up to 100 nails or staples
Weight:
2 lb 3 oz (1.0 kg)
Need Assistance?
Call us on our toll free customer support line:
1-800-689-9928
 Technical questions
 Replacement parts
 Parts missing from package
Imported by Mastercraft Canada Toronto, Canada M4S 2B8

Summary

Product Specifications

General Product Details

Details on the tool's rating, amperes, switch type, repeat speed, staple/brad nail size, magazine capacity, and weight.

Customer Support Information

Contact details for toll-free customer support regarding technical questions, replacement parts, or missing items.

General Safety Alerts

Eye, Ear, and Lung Protection

Mandatory use of eye protection and recommended hearing protection during operation.

General Safety Precautions

Dust Mask Usage

Guidance on wearing a dust mask in dusty environments and potential chemical hazards.

Electrical Safety Precautions

Requirements for proper circuit protection, voltage, and cord condition to prevent hazards.

Power Tool Safety Guidelines

Work Area Safety

Maintaining a clean, well-lit work area and avoiding explosive environments.

Electrical Safety Basics

Information on polarized plugs and avoiding contact with grounded surfaces.

Personal Safety Practices

Staying alert, dressing properly, and securing loose items.

Power Tool Safe Practices

Safe Tool Operation Habits

Avoiding accidental start-ups, maintaining footing, and balance.

Tool Usage and Care

Securing workpieces, proper tool use, storage, and maintenance.

Professional Servicing Requirements

Guidelines for tool servicing and using identical replacement parts.

Specific Safety Rules

Safe Handling and Operation

Rules for pointing, hand positions, and securing the workpiece.

Workpiece and Environment Safety

Ensuring work surfaces are clear and avoiding hazards like hidden wiring.

Pre-Operation Checks

Disconnecting power before loading fasteners or performing service.

Extension Cord Safety

Cord Management and Selection

Proper cord placement, condition, gauge selection, and circuit use.

Symbols and Certifications

Tool Symbol Meanings

Explanation of symbols that may appear on the tool for safe operation.

Safety and Compliance Marks

Information regarding CSA and UL certifications for the tool.

Know Your Nailer;Stapler

Component Identification

Diagram labeling the parts of the nailer/stapler.

Fastener Dimension Guides

Visual guides for staple and nail dimensions (gauge, width, length).

Accessories and Contents

Recommended Accessories

Details on compatible nails and staples and warnings for improper use.

Carton Contents Overview

Information on unpacking and comparing contents with the provided list.

Assembly and Operation Guide

Pre-Operation Checklist

Essential checks before operating the nailer/stapler for safety.

ON;OFF Switch Function

Description and illustration of the tool's ON/OFF switch.

Loading Brad Nails

Step-by-step instructions for loading brad nails into the magazine.

Assembly and Operation Steps

Loading Brad Nails Continued

Completing the brad nail loading process and troubleshooting magazine closure.

Loading Staples

Initial steps for loading the correct type of staples into the magazine.

Assembly and Operation Procedures

Loading Staples Continued

Completing staple loading and notes on magazine latch engagement.

Nailing or Stapling Procedure

Instructions on how to hold the tool and activate the trigger for fastening.

Assembly and Operation Tasks

Nailing or Stapling Execution

Finalizing the fastening process by squeezing the trigger switch.

Removing Jammed Fasteners

Safety procedures and steps for removing jammed nails or staples.

Maintenance

General Care and Warnings

Guidelines on using correct parts, cleaning, avoiding solvents, and not abusing the tool.

Lubrication Information

Details on factory lubrication and whether further lubrication is required.

Exploded View

Tool Component Diagram

A visual representation of all internal parts of the nailer/stapler with numbering.

Parts List

Component Part Numbers

A table listing all parts with keys, part numbers, names, and quantities for ordering.

Limited Warranty Terms

Warranty Coverage Details

Duration of warranty for the product, components, and accessories.

Warranty Conditions and Limitations

Exclusions such as wear, misuse, lack of maintenance, and unauthorized repairs.

Limited Warranty Details

Further Warranty Limitations

Additional exclusions for third-party parts, exterior finish, and consumer rights.

Contact and Product Assurance

Information on product quality and the toll-free helpline for support.

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features
5. Safety Warnings (General)
6. Specific Safety Rules

This document describes the Mastercraft Nailer/Stapler, model 057-7915-8, an electric power tool designed for driving brad nails and staples. It functions as both a nailer and a stapler, offering versatility for various fastening tasks. The tool is intended for use in a well-ventilated area and requires proper safety precautions during operation.

Function Description:

The Mastercraft Nailer/Stapler is an electrically powered fastening tool. It features a single-shot trigger with a safety lock, ensuring controlled operation. The tool is designed to drive brad nails and staples into workpieces. Its primary function is to provide quick and efficient fastening for construction, woodworking, and DIY projects. The magazine holds a supply of fasteners, which are fed into the mechanism and driven by the tool's internal components. The safety lock prevents accidental firing, enhancing user safety.

Important Technical Specifications:

• Rating: 120 V, 60 Hz AC
• Amperes: 5 A
• Switch: Single shot trigger with safety lock
• Repeat speed: Up to 20 shots per minute
• Staple size:
  • Type: T50 (1.25x0.6 mm)
  • Crown: 3/8" (10.6 mm)
  • Length: 1/4-5/8" (6–16 mm)
• Brad nail size:
  • Gauge: 18
  • Length: 1/4-5/8" (6–16 mm)
• Magazine capacity: Up to 100 nails or staples
• Weight: 2 lb 3 oz (1.0 kg)

The tool is double-insulated and equipped with a polarized plug. It requires connection to a 120 V, 15 A circuit protected by a time-delayed fuse or circuit breaker.

Usage Features:

• ON/OFF Switch: Located at the rear of the handle. Press the top to turn ON, bottom to turn OFF.
• Loading Brad Nails:
  1. Turn the ON/OFF switch OFF and remove the plug.
  2. Squeeze the magazine latch.
  3. Slide the magazine out.
  4. Place a nail strip into the magazine track, ensuring nail heads are in the track and the row of nails lies flat on the right side.
  5. Slide the nail strip forward to the front of the track.
  6. Slide the magazine forward until it locks into position.
  • Note: Ensure the nail strip is properly nested and the magazine latch is fully engaged to prevent loosening during operation.
• Loading Staples:
  1. Turn the ON/OFF switch OFF and remove the plug.
  2. Squeeze the magazine latch.
  3. Slide the magazine out.
  4. Place a row of T50 3/8" (10.6 mm) wide staples (max 5/8" or 16 mm length) into the magazine track, with staple crowns inserted first.
  5. Slide the staple strip forward to the front of the track.
  6. Slide the magazine forward until it locks into position.
  • Note: Only use recommended staple types. Ensure staples are properly placed and the magazine latch is fully engaged.
• Nailing or Stapling:
  1. Hold the handle firmly with the stapler head and the rear stabilizing feet flat against the workpiece.
  2. Ensure the magazine assembly is held firmly at right angles (90°) against the workpiece.
  3. When held firmly, the safety lock will disengage, enabling activation.
  4. Squeeze the trigger switch to drive the nail or staple.
  • Note: The trigger switch will not activate if the safety lock is not disengaged.
• Removing a Jammed Nail or Staple:
  • DANGER: Always turn the switch OFF and remove the plug from the power source before attempting to clear a jam.
  1. Turn the switch OFF and remove the plug.
  2. Turn the tool upside down, press the magazine latch, and slide the magazine outward.
  3. Remove any unused nails or staples from the magazine track.
  4. Use needle-nose pliers to remove the jammed nail or staple from the mechanism.
  • Note: Remove jams immediately. Do not attempt to drive another fastener if one is jammed, as this can damage the tool.

Maintenance Features:

• General Cleaning:
  • DO NOT use solvents (gasoline, naphtha, acetone, lacquer thinner, petroleum-based products, penetrating oils, etc.) on plastic parts, as these can damage or destroy plastic.
  • Use a clean, dry cloth to remove dirt, dust, oil, and grease.
  • Regularly remove accumulated dust and debris with a soft, DRY brush.
  • Use safety goggles when using an air jet to blow dust out of the tool.
• Lubrication: All moving parts are pre-lubricated with a high-grade lubricant for the life of the unit under normal conditions. No further lubrication is required.
• Servicing:
  • When servicing, use only identical replacement parts to avoid hazards or damage.
  • Any repair or replacement of electrical parts must be performed by a qualified technician.
  • DO NOT attempt to modify the tool or create accessories, as this can lead to injury and void the warranty.
• Storage: Store power tools out of reach of children and untrained persons.
• Cord Maintenance: Inspect the power cord regularly. Replace a damaged cord immediately to prevent electric shock or fire. Keep the cord away from heat, oil, sharp edges, and moving parts.
• Extension Cords: Use outdoor-rated extension cords ("W-A" or "W") when operating outdoors. Ensure extension cords are of sufficient gauge (refer to the provided chart) to prevent voltage drop and overheating. Protect extension cords from sharp objects, excessive heat, and damp areas.

Safety Warnings (General):

• Always read and understand all instructions before use.
• Wear eye protection (CSA or ANSI Z87.1 compliant) to prevent flying debris injury. Prescription eyeglasses are not sufficient.
• Wear a dust mask in dusty environments.
• Use hearing protection, especially during extended or noisy operation.
• Keep the work area clean and well lit.
• Avoid operating in explosive environments.
• Keep bystanders, children, and visitors away.
• Avoid contact with grounded surfaces to reduce electric shock risk.
• Do not expose the tool to rain or wet conditions.
• Do not abuse the power cord.
• Stay alert, be aware of surroundings, and use common sense.
• Dress properly; avoid loose clothing, jewelry, and long hair near moving parts.
• Use clamps or other means to secure the workpiece.
• Do not force the tool; use the correct tool for the application.
• Do not use a tool if the power switch does not function.
• Disconnect the plug before making adjustments, changing accessories, or storing the tool.
• Maintain tools with care; keep cutting tools sharp and clean.
• Inspect for misalignment, binding, or broken parts before use.
• Use only manufacturer-recommended accessories.
• Tool servicing must be performed by qualified personnel using identical replacement parts.

Specific Safety Rules:

• Do not plug in the tool or install fasteners until the Owner's Manual is read and understood.
• Never point the nailer/stapler at anyone.
• Do not wear gloves, neckties, or loose clothing.
• Do not nail or staple workpieces too small to be securely held.
• Keep hands on the tool and away from the nail or staple mechanism.
• Hold the tool by insulated gripping surfaces when there's a risk of contacting hidden wiring or its own cord.
• Ensure the work surface is free from nails and other foreign objects.
• Do not lay the workpiece on hard surfaces like concrete or stone, as protruding fasteners can cause the tool to jump.
• Always place the switch in the OFF position and remove the plug before adding/removing fasteners or servicing.

MasterCraft 057-7915-8 Specifications