Question about Poulan Pro Chain Saw 46cc 20"

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Chainsaw bogs down when trigger is pulled - Poulan Pro Chain Saw 46cc 20"

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Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Make sure the carburetor fasteners are tight. Try to pull the chain by hand. If not possible, remove the bar and chain, then clean the entire area where the bar fits to the engine. Run the engine for a few moments--oil should ooze out of the port in the side of the engine case. If nothing, then you need to investigate the oil pump, lines, and oil tank for blockage, or other failure to deliver oil. If it does ooze out oil, then clean the bar drive-end small oil passages that feed oil out to the chain groove and the entire chain groove. Make sure the sprocket tip turns freely and is undamaged. Re-assemble the bar and chain making sure the teeth cut toward you on the bottom run. Bring the chain up to the bar with the tightener, but not so tight that the chain can't be turned by hand. Hope this helps!

Posted on Jul 18, 2010

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Posted on Jan 02, 2017

dontbother10
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SOURCE: I have a craftsman chainsaw model no. 358356081

Does it have a fuel primer bulb?

Posted on Sep 26, 2009

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What causes it to stall when trigger pulled?


Generally lack of fuel..

Pulling on the trigger doesn't increase the fuel getting into the engine like you'd think. The trigger opens up a butterfly valve which allows more air to be drawn in, this in turn draws more fuel through the carb. So if its bogging down when the throttle is pulled then generally it because not enough fuel is being drawn through b the air.. meaning there's too much air to fuel mix to burn effectively. This also can work the other way if the air filter is blocked or the exhaust is blocked with carbon deposits.

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Most likely it is either dirt or a burned spot on the armature of the motor. I would try blasting it with air to see if you can clean it out. If that doesn't work then it probably needs to be torn down to either clean it or replace whatever is damaged.

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The throttle trigger will not work on my 235e husqvarna


I'm guessing from the statement that it "will not work to increase speed" that you have been able to successfully start the chainsaw.
I have to look at this with the assumption that you haven't run a chain saw before, so bear with me if some of this is excessively simple.
If the throttle trigger does not move, something is jammed. The handle for the choke should automatically move to the retracted position when you pull on the throttle. If it doesn't, see if the trigger will move after you push the choke handle back in.
If the trigger moves in when you squeeze it but you don't hear any change in the engine sound then it's probable that the throttle wire has disconnected at the carburetor or at the handle.
Is the chain brake off? You need to pull it firmly back toward the upper handle for it to be disengaged. If the handle is forward it will lock the outer portion of the clutch. If you try to accelerate with it locked the engine will bog and not allow the chain to move.
Any of these conditions other than the chain brake will probably require some disassembly. Make sure you're confident that you've correctly reassembled everything if you're going to do it yourself.

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Chainsaw will start but will not keep going.


May need to overhaul the carb. I suggest that you replace the fuel line and fuel filter too.

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