4 cycle snow blowers are those that use a 4 cycle engine instead of a 2 cycle engine. While a 2 cycle engine uses a mixture of gas and oil to run, a 4 cycle engine requires only gas. Also known as a 4 stroke engine, this comes with separate strokes for power, exhaust, combustion, and intake.
Snowblowers with 4 cycle engines are stronger and more powerful, which is why they are often used in dual stage snow blowers. They are also usually more durable and are easier to start than 2 cycle engines. However, they are also heavier and bulkier. Most top-selling two stage snow clearing equipment these days sue 4 cycle OHV engines. These can cost anywhere between $400 and $1000, or even higher depending on the size, specs, and power of the machine. An OHV engine uses an overhead valve instead of side valves. An overhead valve is located on top of the cylinder.
This has a significant effect on the torque and starting power of an engine as well as on how much noise the engine makes while it runs. So while 2 cycle engines focus on horsepower, 4 cycle engines focus on torque. The added torque is very useful in a two stage snowblower because it can help move heavier snow more effectively.
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