The Echo CS-3400 chainsaw is designed to the same dimensions as the Echo CS-3000 chainsaw. From its longest points, the CS-3400 model chainsaw measures 10.2 inches. This chain saw is 9.1 inches wide and 8.7 inches tall. Measurements do not include the device's chain and guide bar. Not including the chain and guide bar, Echo's CS-3400 chainsaw weighs a total of 7.3 pounds.
The engine that Echo designed for use in its CS-3400 chainsaw is also used in the CS-3000 and CS-3450 chain saw models. This particular engine is an air-cooled, single-cylinder, two-stroke engine. The piston displacement offered by the CS-3400 chain saw is 2.03 cubic inches. Fuel is fed to this chain saw's engine through a diaphragm carburetor system. While performing tune-ups on this engine, the manufacturer recommends that the consumer employ either Champion CJ-7Y or NGK BPM 7A spark plugs, making sure to leave a .026-inch gap.
The Echo model CS-3400 chain saw is fitted with an 8.6 fluid-ounce capacity fuel tank. This chain saw can hold a total of 5 ounces of motor oil. A combination of oil and gasoline are used as fuel for this chainsaw. The consumer should employ a 50:1 combination of 89-octane gasoline (or a 10% ethanol fuel) and motor oil; preferably Echo brand two-stroke motor oil. To keep the chains properly lubricated, the consumer should apply SAE NO. 30 oil in the summer and SAE NO. 10 oil in the winter or when cutting into resinous trees.
The Echo CS-3400 offers a number of features. Echo's model CS-3400 chain saw is fitted with an automatic transmission. This model of chain saw features several safety devices that help prevent injury during operation including a front hand guard, anti-vibration device, chain brake and chain catcher. The nuts that attach the guide bar to the rest of the chain saw should be tightened to between 80 and 95 inch-pounds and never tighter.