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INSTRUCTION MANUAL
Cordless Impact Wrench
DTWA070
DTWA100
DTWA140
DTWA190
IMPORTANT: Read Before Using.

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Summarization of Contents

Specifications
Applicable Battery Cartridge and Charger
Lists compatible battery cartridges and chargers for the tool. Emphasizes using specified models only.
Symbols
Explains the meaning of symbols used on the equipment for user understanding before operation.
Noise
Provides A-weighted noise level data (sound pressure and sound power) for each model.
Intended Use
States that the tool is designed for fastening bolts and nuts.
Safety Warnings
General Power Tool Safety Warnings
Provides essential safety instructions applicable to all power tools to prevent electric shock, fire, and injury.
Work Area Safety
Covers maintaining a clean, well-lit work area and preventing hazards in explosive atmospheres.
Electrical Safety
Details precautions for using power tools safely, including plug matching and avoiding wet conditions.
Personal Safety
Focuses on operator safety, including staying alert, using PPE, and preventing accidental starts.
Vibration
Lists vibration emission values determined according to EN62841-2-2 for each tool model.
EC Declaration of Conformity
Informs that the EC declaration of conformity is included as Annex A to the manual for European countries.
Power Tool Use and Care
Battery Tool Use and Care
Provides guidelines for safe and effective use and maintenance of battery-powered tools.
Service and Maintenance
Cordless Impact Wrench Safety Warnings
Specific safety precautions for operating cordless impact wrenches, including handling live wires and socket checks.
Important Safety Instructions for Battery Cartridge
Crucial safety information regarding battery handling, charging, disposal, and potential hazards.
Tips for Maintaining Maximum Battery Life
Recommendations for charging, storage, and usage to maximize the lifespan of the battery cartridge.
Functional Description
Installing or Removing Battery Cartridge
Step-by-step instructions for safely inserting and removing the battery cartridge from the tool.
Tool / Battery Protection System
Explains the built-in system that automatically cuts off power to protect the tool and battery.
Checking Remaining Battery Capacity
Details how to check the battery level using the LED indicator lamps on the tool.
When Charging
Describes the LED indicator behavior during the battery charging process.
When Using
Explains how the LED indicators show battery capacity during tool operation.
Operation and Controls
Switch Action
Instructions on how to start, stop, and control the tool's speed using the switch trigger.
Reversing Switch Action
Guidance on using the lever to change the tool's rotation direction (clockwise/counterclockwise).
Lighting Up the Front Lamp
Details on how to activate and deactivate the LED lamp located on the tool's front.
Changing Parameter Setting on Computer
Instructions for configuring tool settings via the 'Makita Industry Tool Settings' application.
Parameter Setting on Tool
Changing Torque Level
Steps to adjust the torque level setting on the tool using the setting button and indicator.
Changing Rundown Level
Instructions for adjusting the rundown level setting, affecting fastener seating sensitivity.
Changing Workable Time Range
Guide to setting the shortest and longest durations for the tool's rotation when the trigger is held.
Measuring Actual Operation
Self-diagnosis
Explains how to measure torque level and operating time for test purposes and technique reproduction.
LED Indicator / Beeper Functions
Alarm Codes and Actions
Details various alarm codes, their corresponding tool status, LED/beeper indicators, and recommended actions.
Other Alarms and Indicators
Describes additional alarms like insufficient fastening, maintenance, and PC communication status.
Assembly
Selecting Correct Impact Socket
Guidance on choosing the appropriate size impact socket to ensure accurate torque and prevent damage.
Installing or Removing Impact Socket
Instructions for attaching and detaching impact sockets, with optional accessory details.
Tool Operation
Installing Hook
Instructions for installing the optional hook for hanging the tool.
Fastening Procedures
Key precautions and steps for operating the tool for fastening, including battery insertion and workpiece securing.
Factors Affecting Fastening Torque
Torque Measurement and Adjustment
Discusses factors like battery discharge, socket wear, bolt size, and tool handling that influence fastening torque.
Fastening Torque and Torque Level Chart
Reference Chart
A chart illustrating the relationship between torque level settings and measured fastening torque for different models and bolt sizes.
Maintenance and Optional Accessories
Maintenance Precautions
Safety advice for performing inspection or maintenance, emphasizing authorized service centers and genuine parts.
Recommended Optional Accessories
Lists accessories recommended for use with the tool and cautions against using non-specified items.

Table of Contents