Efco MT4400 User Manual (English)

Other manuals for Efco MT4400

Questions and Answers:

D
Deanna CarpenterAug 1, 2025
What to do if my Efco MT4400 starts but the chain doesn't rotate?
- B
  Blake ContrerasAug 1, 2025
  If your chainsaw starts but the chain doesn't rotate, it could be due to several reasons: * The chain brake is engaged. Disengage the chain brake. * The chain tension is too tight. Check and adjust the chain tension. * There may be an issue with the bar and chain assembly. Check the bar and chain assembly. * The chain or bar may be damaged. Inspect the chain and/or bar. * The clutches and/or sprockets may be damaged. Replace them if necessary, or contact an Authorized Service Center.
C
Catherine WoodAug 7, 2025
How to fix an Efco MT4400 that won't start or dies after a few seconds?
- A
  Alicia BallardAug 7, 2025
  If your Efco chainsaw won't start or dies shortly after starting, ensure the switch is in the 'I' position. The issue might be due to: * No spark. Check the spark plug for a spark. If there's no spark, try again with a new spark plug (CMR7A). * The engine is flooded. Follow the procedure on page 20. If the engine still won't start, repeat the procedure with a new spark plug.
B
bauermelissaAug 13, 2025
Why are the bar and chain on my Efco MT4400 Chainsaw getting hot and smoking?
- T
  Tyler SmithAug 13, 2025
  The bar and chain may be getting hot and smoking because the chain oil tank is empty, the chain tension is too tight, or there is a malfunction in the lubrication system. To resolve this: * Refill the chain oil tank whenever you refill the fuel tank. * Check the chain tension. * Run the chainsaw at full throttle for 15-30 seconds, then stop and check if oil is dripping from the bar tip. If there is no oil, contact an Authorized Service Center.
S
Stephen WiseAug 18, 2025
Why is my Efco MT4400 Chainsaw engine not reaching full speed and emitting excessive smoke?
- D
  David RodriguezAug 18, 2025
  The engine might not be reaching full speed and could be emitting excessive smoke due to several reasons: * The oil/gasoline mixture might be incorrect. Use fresh gasoline and the appropriate 2-stroke engine oil. * The air filter might be dirty. Clean the air filter. * The carburetor might need adjustment. Contact an Authorized Service Center to adjust the carburetor.
C
Chad ScottAug 25, 2025
Why does my Efco MT4400 Chainsaw start but not accelerate properly?
- L
  Lisa DillonAug 25, 2025
  If your chainsaw starts but doesn't accelerate correctly or doesn't run properly at high speed, the carburetor likely needs adjustment. Contact an Authorized Service Center to adjust the carburetor.

Efco MT4400 Specifications

General

Bar length	41 cm / 16 in
Chain pitch	3/8 inch
Chain gauge	0.050 inch
Oil pump	Automatic/Adjustable
Weight	10.8 lbs
Displacement	42.9 cm³
Engine Displacement	42.9 cm³

Summary

Introduction

The Operator's Manual

Importance of the operator's manual for protection and reference.

Product Identification

Chain Saw Components

Diagram and list of parts of the chainsaw for identification.

Safety

Understanding Safety Labels

Explanation of safety symbols and warnings found in the manual.

State and Local Requirements

Compliance with national and local regulations for chainsaw use.

Vibration and Exhaust Hazards

Warnings about risks associated with prolonged vibration and engine exhaust.

Safety Rules

Basic Safety Precautions

Fundamental safety rules to follow before and during chainsaw operation.

Fuel Handling

Safe practices for mixing, storing, and handling gasoline fuel.

Operation and Safety

Guidelines for safe operation, including grip and body positioning.

Precautions Against Kickback

Detailed explanation of kickback and methods to prevent it.

Maintain Control

Techniques for maintaining firm grip and balance during operation.

Kickback Safety Features

Features designed to reduce kickback hazard on the chainsaw.

Chain Brake

Information and checks for the chain brake system.

Recommended Bar and Chain Combination

Specifications for compatible guide bars and chains for optimal performance and safety.

Precautions to Reduce Vibration Risk

Measures to minimize exposure to vibrations and prevent related injuries.

Maintenance Precaution

Warnings and important considerations for performing maintenance.

Assembly

Assembling the Bar and Chain

Step-by-step instructions for correctly attaching the guide bar and chain.

Operation

Chain Tension

Procedures for checking and adjusting chain tension for safe operation.

Breaking-in the Chain

Method for breaking in a new chain to ensure longevity and performance.

Bucking Spike

Information and safety considerations regarding the bucking spike.

Fueling

Instructions and warnings for safely fueling the chainsaw.

Fuel Mixture

Correct fuel and oil ratios for the chainsaw's 2-cycle engine.

Chain Oil System

Explanation of the automatic oiling system for bar and chain lubrication.

Preparation for Cutting

Steps to prepare the chainsaw and operator before starting cutting.

Safe Handling and Stance

Guidance on maintaining a secure grip and proper body positioning for safe operation.

Basic Cutting Procedure

Step-by-step guide for performing basic cutting operations.

Work Area Precautions

Safety rules regarding the cutting environment and bystanders.

Starting the Engine

Detailed instructions for safely starting the chainsaw engine.

Ice Device System

How to use the ice device system for cold weather operation.

Breaking-in the Engine

Procedure for breaking in the engine to ensure optimal performance.

Stopping the Engine

Correct procedures for safely stopping the chainsaw engine.

Chain Brake Operation

How to operate and test the chain brake for safety.

Tree Felling

Guidelines and precautions for felling trees safely.

Buttress Roots

How to handle and remove buttress roots before felling.

Bucking

Techniques for cutting fallen trees into desired log lengths.

Logs Under Stress

Special attention for cutting logs that are bent or under pressure.

Cutting Techniques

Explanation of overbucking and underbucking methods.

Limbing and Pruning

Procedures for removing branches from a felled tree.

Springpoles

Warning and identification of springpoles as a cutting hazard.

Maintenance

Maintenance Chart

Overview of maintenance tasks and recommended intervals for the chainsaw.

Chain Maintenance

Instructions for maintaining the saw chain's sharpness and condition.

Cutter Sharpening Angles

Correct angles for filing cutters to ensure optimal performance and safety.

Guide Bar Maintenance

Procedures for maintaining the guide bar for optimal life and performance.

Carburetor Adjustment

How to adjust the carburetor for optimal engine performance.

Fuel Filter

Checking and replacing the fuel filter to ensure proper fuel flow.

Air Filter

Cleaning and replacing the air filter for engine efficiency.

Starter Unit and Engine Cleaning

Maintenance of starter unit and cleaning engine fins for performance.

Spark Plug and Muffler Maintenance

Maintenance of spark plug and spark arresting muffler for ignition and safety.

Muffler

Information regarding the catalytic converter muffler and its safety.

Chain Brake Maintenance

Procedures for maintaining the chain brake for proper function.

Troubleshooting

Using Trouble shooting Chart

A chart to diagnose and resolve common engine and operational problems.

Storage

Storing Chain Saw

Instructions for safely storing the chainsaw for extended periods.

Technical Data

Related product manuals

Efco MT4400 User Manual

Table of Contents

Other manuals for Efco MT4400

Questions and Answers:

Efco MT4400 Specifications

Summary

Introduction

The Operator's Manual

Product Identification

Chain Saw Components

Safety

Understanding Safety Labels

State and Local Requirements

Vibration and Exhaust Hazards

Safety Rules

Basic Safety Precautions

Fuel Handling

Operation and Safety

Precautions Against Kickback

Maintain Control

Kickback Safety Features

Chain Brake

Recommended Bar and Chain Combination

Precautions to Reduce Vibration Risk

Maintenance Precaution

Assembly

Assembling the Bar and Chain

Operation

Chain Tension

Breaking-in the Chain

Bucking Spike

Fueling

Fuel Mixture

Chain Oil System

Preparation for Cutting

Safe Handling and Stance

Basic Cutting Procedure

Work Area Precautions

Starting the Engine

Ice Device System

Breaking-in the Engine

Stopping the Engine

Chain Brake Operation

Tree Felling

Buttress Roots

Bucking

Logs Under Stress

Cutting Techniques

Limbing and Pruning

Springpoles

Maintenance

Maintenance Chart

Chain Maintenance

Cutter Sharpening Angles

Guide Bar Maintenance

Carburetor Adjustment

Fuel Filter

Air Filter

Starter Unit and Engine Cleaning

Spark Plug and Muffler Maintenance

Muffler

Chain Brake Maintenance

Troubleshooting

Using Trouble shooting Chart

Storage

Storing Chain Saw

Technical Data

Related product manuals