ECHO CS-621SX Petrol Chainsaw

SKU: E1-CS621SX-XXINCH-BAR

A heavy-duty rear handle chainsaw powered by a 59.8 cc petrol engine. It is the best in its class and is packed with features to increase the productivity of the professional user. 18, 20, or 24 inch bar options.

About the ECHO CS-621SX Petrol Chainsaw

Heavy-Duty Chainsaw for Demanding Professional Work

The ECHO CS-621SX is a high-performance rear handle chainsaw designed for challenging commercial and forestry tasks. Built for medium and large felling jobs, it delivers exceptional cutting power, precision, and reliability in tough working conditions. As part of ECHO’s X Series range, it is recognised as one of the best in its class for professional productivity. With bar length options of 18, 20, or 24 inches, it adapts easily to different cutting needs.

Powerful ECHO Engine for Superior Performance

At the heart of the CS-621SX is a premium 59.8 cc petrol engine delivering 3.2 kW of power. This Japanese-engineered engine combines impressive output with low emissions, ensuring strong performance while meeting environmental standards. Despite its power, the chainsaw weighs only 6.2 kg (dry), maintaining excellent balance and ease of handling. A decompression valve makes starting smoother and faster, while the anti-icing system keeps the carburettor functioning reliably in cold weather. These features ensure consistent performance throughout the year.

Comfort and Safety in Every Operation

A heavy-duty aluminium handle with a rubber grip reduces vibration and enhances operator comfort during extended use. This ergonomic design allows for controlled, precise cutting while reducing strain. A rotating plastic chain catcher protects both the user and the chain from potential damage. The inertia-type chain brake adds an essential safety layer, instantly stopping the chain when needed. Dual bumper spikes provide added stability, making accurate cutting easier even in challenging situations.

Reduced Maintenance for Maximum Productivity

The CS-621SX is engineered to keep downtime to a minimum with practical maintenance features. The G-Force engine air pre-cleaner removes dust and debris before they reach the engine, extending its service life. Dropout prevention nuts prevent the loss of key components during maintenance. Side-access chain tensioning allows quick and accurate adjustments, while a tool-less air filter cover enables easy filter access and replacement. Large, easy-grip fuel and oil caps make refilling simple, and a translucent fuel tank allows quick visual checks of fuel levels.

Built to Last in Professional Environments

ECHO’s engineering expertise ensures the CS-621SX is built for durability and long-term reliability in demanding conditions. Whether used for forestry, large-scale felling, or commercial cutting tasks, it offers consistent, dependable performance. Combining power, safety, comfort, and low maintenance, this chainsaw is an ideal choice for professionals who demand quality and efficiency from their tools.


A 2 year professional/5 year domestic warranty with ECHO is included, we will register the machine. T&Cs apply.

ECHO CS-621SX Petrol Chainsaw Technical Information

  • Engine displacement: 59.8 cc
  • Output: 3.32 kW
  • Fuel consumption at max engine power: 2.05 L/h
  • Chain tensioner: side
  • Priming pump: no
  • Start assist system: Decomp
  • Guide bar gauge: 0.058″
  • Weight (excluding bar and chain): 6.2 kg
  • Fuel tank capacity: 0.645 Litres
  • Chain oil tank capacity: 0.30 Litres
  • Ignition system: CDI
  • Choke with automatic fast idle release: yes
  • Bar length: choose from 18, 20 or 24 inch
  • Saw chain pitch: 3/8″

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