If the tank can.
Chainsaw fuel cap vent.
If the tank can t vent this added pressure fuel will stop flowing from the tank to the carburetor due to an imbalance in the atmospheric pressure and the tank pressure.
If you are running a vent line it is important that the line is ran higher than the highest point on the tank including the fuel filler neck.
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The gas cap on a poulan chainsaw covers the tank and keeps gas from spilling while you cut.
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Unfortunately this hole would allow the fuel to splash out when accelerating or turning a corner.
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Also the vent line cannot have a dip in it where fuel or.
How to clean a vent cap on a stihl chainsaw.
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When the gas inside your stihl chain saw fuel tank heats up it creates pressure inside the tank.
This is simply a gas cap with a hole in it.
When the gas inside your stihl chain saw fuel tank heats up it creates pressure inside the tank.
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It is also designed to vent excess heated gases to keep the right amount of pressure which allows the fuel to be pumped into the carburetor via the fuel line.