Echo CS-440 User Manual (English)

Questions and Answers:

M
maynardrobertJul 26, 2025
What to do if my Echo Chainsaw engine cranks but won't start?
- Z
  Zachary PetersonJul 26, 2025
  If your Echo Chainsaw engine cranks but doesn't start, there are several potential causes: * A clogged fuel filter or fuel line, in which case you should clean or replace the fuel filter and clean the fuel line. * A fuel mixture that is too rich, so you should open the choke, clean or replace the air filter, or adjust the carburetor. * An incorrect spark gap, a carbon-covered spark plug, or a fuel-fouled spark plug, so you should adjust the spark gap to 0.6 mm to 0.7 mm (0.024 to 0.028 in.) or clean/replace the spark plug. * Also make sure the ignition switch is turned on.
S
Sara GrayJul 31, 2025
What to do if my Echo Chainsaw engine does not crank?
- I
  Isaac CraneJul 31, 2025
  If the engine of your Echo Chainsaw does not crank, it may indicate an internal engine problem. In this case, you should ask your ECHO dealer for assistance.
R
ronaldwilkersonAug 5, 2025
Why does my Echo CS-440 engine run poorly?
- M
  Marc WebbAug 5, 2025
  If your Echo Chainsaw engine runs poorly, several factors could be responsible. A dirty air filter or fuel filter can cause issues; try cleaning or replacing them. A blocked fuel vent, a dirty spark plug, or a blocked cooling system can also be the cause. You can also check if the exhaust port or spark arrestor screen is blocked and clean it. Adjusting the carburetor might also solve the problem.
D
Derrick VillaAug 10, 2025
What to do if there is no spark at the plug of my Echo Chainsaw?
- M
  michaelfletcherAug 10, 2025
  If there's no spark at the plug in your Echo Chainsaw, the spark gap might be incorrect; adjust it to 0.6 mm to 0.7 mm (0.024 to 0.028 in.). Alternatively, the plug could be covered with carbon or fouled with fuel, in which case you should clean or replace it. The spark plug itself may also be defective, requiring replacement.
J
Jared WilsonAug 15, 2025
Why is the muffler wet with fuel on my Echo CS-440?
- P
  Paul SmithAug 15, 2025
  If the muffler of your Echo Chainsaw is wet with fuel, the fuel mixture may be too rich, so open the choke. It may also be necessary to clean or replace the air filter or adjust the carburetor. For further assistance, consult your ECHO dealer.

Echo CS-440 Specifications

General

Brand	Echo
Model	CS-440
Category	Chainsaw
Language	English

Summary

RULES FOR SAFE OPERATION

Kickback Safety Precautions for Chain Saw Users

Details kickback causes, effects, and prevention methods for chain saw operation.

Other Safety Precautions

Covers essential safety guidelines for chain saw users beyond kickback.

SYMBOLS AND SIGNS

DECALS

PACKING LIST

NOMENCLATURE OF PARTS

OPERATOR SAFETY

Vibration and Cold

Explains risks of vibration and cold exposure, and precautions.

Repetitive Stress Injury

Discusses RSI/CTS risks and preventive measures for chain saw use.

Eye and Hearing Protection

Details necessary protective gear for eyes and ears during operation.

Wear Proper Clothing

Advises on appropriate attire for safe and effective chain saw operation.

Hot Humid Weather

Provides guidance for operating in hot conditions to prevent fatigue.

Avoid Hot Surfaces

Warns about hot components like the muffler during operation.

SPARK ARRESTOR MUFFLER

CORRECT USE OF CHAIN BRAKE

PREPARATION FOR USE

Kick Guard® to Bar Instructions

Step-by-step guide for installing the kick guard onto the guide bar.

Guide Bar and Saw Chain Installation/Removal

Instructions for mounting and dismounting the guide bar and chain.

ADJUSTING CHAIN TENSION

FUEL AND LUBRICANT

Handling Fuel

Covers safe practices for mixing, storing, and handling gasoline and oil.

OPERATION

When the Engine is Cold

Steps for starting the chain saw when the engine is cold.

When the Engine is Hard to Start

Troubleshooting steps for difficult cold starts.

When the Engine is Warm

Procedures for starting the chain saw with a warm engine.

Running

Guidelines for operating the chain saw after starting.

Stopping

Procedures for safely shutting down the chain saw.

Checking Chain Tension

How to check and maintain proper chain tension.

Chain Lubrication Test

Method to verify the automatic oiler is functioning correctly.

CUTTING INSTRUCTION

General Cutting Practices

Basic safety and technique advice for cutting operations.

Felling the Tree

Step-by-step instructions for felling trees safely and effectively.

Limbing

Techniques for removing branches from a fallen tree.

Bucking

Methods for cutting logs or fallen trees into smaller pieces.

CHAIN BRAKE OPERATION

Testing the Brake

Procedure to verify the proper function of the chain brake.

AUTOMATIC CHAIN BRAKE

WINTER KIT

CHAIN AND GUIDE BAR COMBINATION

Guide Bar Specifications

Details on recommended guide bar types and their characteristics.

Saw Chain Specifications

Information on recommended low-kickback saw chains and standards.

MAINTENANCE AND CARE

Skill Levels for Maintenance

Classification of maintenance tasks by difficulty and required skill.

Maintenance Intervals

Schedule outlining recommended maintenance tasks and frequencies.

CARBURETOR ADJUSTMENT

MAINTENANCE COMPONENTS

Air Filter Maintenance

Instructions for inspecting, cleaning, and replacing the air filter.

Fuel System Checks

Procedures for checking the fuel system for leaks and proper function.

Spark Plug Inspection

Guidelines for checking and adjusting the spark plug gap.

Fuel Filter Maintenance

Steps for checking and replacing the fuel filter.

Oil Filter Maintenance

Procedures for checking and cleaning the oil filter.

Guide Bar Maintenance

How to clean and check the guide bar for wear.

Sprocket Inspection

Guidance on checking the sprocket for wear and replacement.

Cylinder Fins Cleaning

Instructions for cleaning cylinder fins to ensure proper cooling.

Muffler Spark Arrestor Care

How to clean and maintain the muffler spark arrestor screen.

Automatic Oiler Adjustment

Instructions for adjusting the automatic oiler's discharge volume.

SETTING THE SAW CHAIN

Saw Chain Maintenance Points

Key considerations for proper saw chain sharpening and alignment.

Setting Saw Chain

Detailed instructions and techniques for sharpening the saw chain.

TROUBLESHOOTING

STORAGE AFTER USE

TECHNICAL DATA

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