FAQ: How A Chainsaw Carburetor Works?

How does chainsaw choke work?

The choke position increases the richness of the air and fuel mixture the carburetor sprays into the cylinder. With the master control lever in the choke position, the flow of fuel into the engine increases and the flow of air decreases.

How does a 2 stroke chainsaw engine work?

A two-stroke engine, as explained in How Two-stroke Engines Work, has no valves or cams and generates power on every rotation of the crankshaft (twice as often as a four-stroke engine). This feature of the two-stroke engine means that it can generate twice the power of a four-stroke engine of the same displacement.

How do I know if my chainsaw is running lean?

If your saw is running LEAN it will be doggy on acceleration, Have a white arond the exhaust and the spark plug will also be burning white in color.

Why are 2 stroke engines banned?

Answer: Two-strokes left the market because they could not meet steadily-tightening EPA standards for vehicle exhaust emissions. A four-stroke engine has a separate piston stroke for each of the four functions necessary to a spark-ignition engine: intake, compression, power, and exhaust.

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What makes a 2 stroke hard to start?

(1) That you’ve flooded the engine by trying to start it, or that the lower end is loaded up (because you left the gas petcock on). (2) That there is no spark (thus, the plug is wet because the plug never ignited the fuel). Fixing a wet plug (from a flooded engine) is easy.

Is it bad to run an engine with the choke on?

Leaving the choke on for too long will cause unnecessary engine wear and waste fuel. This is also bad for the environment. This is done by the carburettor where the fuel is mixed with clean air coming from the air filter, and sent into the pistons to be ignited.

Which position is choke on?

Similar to the throttle, the choke plate rotates from a horizontal to vertical position to open up the passageway and allow more air to get by. The choke is located before the throttle, and manages the total amount of air going into the engine. The choke is only used when starting a cold engine.

Do you start a chainsaw with the brake on?

Always start your chainsaw with the chain brake engaged so the chain does not move.

Is a Stihl chainsaw a 2-stroke?

Many STIHL hand-held power-tools use 2-stroke combustion engines but some chainsaws, hedge trimmers, grass trimmers and other tools use engines with 2-MIX technology – so what’s the difference and what does it mean for you when you are using the tools?

Why are 2-stroke engines used in chainsaws?

These days, you’ll find two-stroke engines in all kinds of equipment, such as chainsaws, grass trimmers and hedge trimmers, largely because two-stroke engines have fewer moving parts, generate less heat and are in many ways more efficient for their size.

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Are all chainsaws 2-stroke?

Before we get into mixing oil for your chainsaw’s fuel tank, let’s take a step back and think about why we need to do this at all. Chainsaw engines come as either 2-stroke or 4-stroke versions. Sometimes these are also referred to as 2-cycle and 4-cycle engines – it’s the same thing.

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