Quick Answer: How To Adjust Poulan Chainsaw Carburetor P3816?

Why does my Poulan chainsaw dies when I give it gas?

The fuel filter might be clogged. A clogged fuel filter is often caused by leaving old fuel in the chainsaw. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the fuel filter and cause the engine to stall.

How do you adjust H and L screws on a carburetor?

Set the idle speed screw(not L or H) so it is just able to idle by itself. This screw will have a “stop” it rests against. Now turn the L screw out until in decreases in rpm and then back in(very slowly) until it is at peak rpm. Adjust the H screw once more as above and it should be a very serviceable 2 stroke.

How do you adjust the carburetor on a Poulan Pro 42cc chainsaw?

Insert a small flat-head screwdriver into the idle speed screw and turn it clockwise to increase the engine speed if it idles too slowly. As soon as the chain starts to move, turn the screw counterclockwise until the engine idles without dying and the chain stops moving for the correct idle speed.

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Why does my chainsaw dies when I give it gas?

Because your chainsaw will idle, but dies when it is revved up to full power, it means that the filter is only partially clogged; it will allow enough fuel to the engine to run on idle, but not enough to sustain full throttle. If the filter becomes clogged, not enough fuel will reach the engine for it to run properly.

Why does my chainsaw bog down when I give it gas?

If your chainsaw is bogging down when you give it throttle, this is often a sign of improper gas-to-oil ratio. If there is too much gasoline in relation to the amount of oil used, this is known as a “rich mixture” and can cause the chainsaw to run poorly.

How do you adjust the carburetor on a chainsaw?

How to Tune a Chainsaw Carburetor

  1. Start your saw and run it for a few minutes to warm it up.
  2. Set your saw down, let it idle for 30 seconds, and then pick it up and tip it forward (handle up and bar down).
  3. If it keeps running, go to Step 4.
  4. Rev (accelerate) the idling saw.
  5. If it accelerates fine, go to Step 6.

Can’t get my Poulan chainsaw started?

If your Poulan chain saw won’t start, the first thing to check is the fuel. Then turn the saw on, hold it firmly and pull the start rope in short, brisk pulls until it starts. If it doesn’t start within 15 pulls, the spark plug is likely wet-fouled. Remove it and check for moisture on the electrode.

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How do you troubleshoot a Poulan chainsaw?

Poulan Pro Chainsaw Troubleshooting

  1. Make sure you are starting the engine properly.
  2. Fill the tank with the correct fuel mixture.
  3. Clean the saw blade.
  4. Check the fuel line for kinks or leaks.
  5. Replace the fuel filter.
  6. Clean the air filter.
  7. Remove and replace the spark plug.

What are the two adjustment screws on a carburetor?

Instructions. Locate the two adjustment screws on the carburetor. One screw is for the idle speed or low speed; the other is for the high speed. Turn both of the screws counterclockwise to back them out.

What is the screw on the bottom of the carburetor?

If it is the screw in front and underneath the carb throat that bolts to the intake manifold, it is a fuel screw. When you turn the screw out, it richens the mixture. When you turn it in, it leans the mixture.

How do you adjust a high and low carburetor?

Locate the two fuel-adjustment screws on the side of the carburetor. One will be labeled “Hi” and the other “Lo.” The “Hi” screw regulates the engine at full throttle and the “Lo” regulates the fuel when the engine is idling.

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