The CS-302 is a professional-grade chainsaw that was manufactured Echo between 1977 and 1983. Although it's long since been replaced by newer models in Echo's product line, models of the nimble and sturdy CS-302 continue to be used by chainsaw enthusiasts, and reconditioned units and parts are readily available on the secondary market.

Engine Specs

The CS-302 is powered by an air-cooled, two-cycle, one-cylinder engine fueled with a gas-and-oil mixture. It features a 30.1-cubic-centimeter piston displacement, and it is equipped with a magneto-type flywheel, either a Walbro or Tillotson carburetor depending on the model year and an automatic rewind starter. The saw's power head, minus the guide bar and chain, weighs in at 9.9 pounds.

Chain, Bar and Chain Brake

Standard equipment on the CS-302 was a 12-inch guide bar, but the saw could be equipped with a bar up to 16 inches long. Its chain has a quarter-inch pitch and 0.05-inch gauge. The CS-302 was not equipped with a chain brake, a safety mechanism that stops the rotation of the chain when the saw kicks back, as standard equipment, but an optional chain brake was available as an extra-cost add-on.

Starting Sequence

The CS-302 is equipped with a standard starter system that requires adjustment of the throttle and choke levers during the starting sequence. The sequence involves locking the throttle open, closing the choke, pulling the recoil rope, opening the choke when the engine begins to fire and disengaging the throttle after the engine starts. Some newer Echo models, such as the CS-355T, are equipped with reduced-effort starting systems featuring digital ignition; the manufacturer claims that these systems require 30 percent less effort than those used on models such as the CS-302.

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