Echo CS-270WES, CS-370ES, CS-420ES, CS-510ES

Echo should know a thing or two about emissions laws. These machines are designed and built in the US, where strict regulations have been in place for years and require engines to pass “the test” at 50 hours (domestic), 125 hours (semi-professional) and 300 hours (professional), otherwise the manufacturer faces a hefty fine for every unit sold. All models of Echo chainsaw have been passed clean after 300 hours of running. These latest models have additional refinements intended to make them even cleaner.
The refinements come in across the range and include digital ignition so only a very short, light pull is needed to fire up the engine. Our testers find that, depending on the model, between 12cm and 25cm is all that is required. We like this sort of effortless starting — it means you have more energy for the actual work and it is a blessing if you need to stop and restart the machine repeatedly during an operation. The on/off switch is now up for on and down for off.
“They really are remarkably easy to start — hardly any effort at all,” notes a tester. “Though I am having trouble with the on/off switch. It’s tiny and although it’s robust, being made of shiny metal means your gloves slide off it easily.”
All the saws are now fitted with an oiler cooler system that only works when the chain is running. This should mean more economic use of oil and reduced emissions. Other Echo features have been retained, including the inertia-type automatic chain brake, primer pump for trouble-free starting (except on the 510), side access for chain tensioning and one-touch clip-type air filter cover for quicker, easier access to the filter.
The CS-270WES is the baby of the range and we reckon its simplicity will make it popular.
The CS-370ES has been designed for landscapers and tree surgeons needing a lightweight but powerful saw. The CS-420ES is a commercial-grade saw with exceptional balance. You only have to pull the cord 125cm and it’s ready for action.
Weighing just 0.5kg more, the CS-510ES is a professional saw capable of tackling a wide variety of applications. During the test it was quick starting — the second pull from cold. At 49cc and with a 45cm bar, it slices through our beech logs. But if you wanted to fell, the sight line is moulded into the casing.

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