Thank you for contacting Husqvarna's Answer Army.
We regret any confusion regarding Stabilizer use, but it can and should be used in any gasoline supply not being used up in 30 days.
However, even with Stabilizer added, gasoline left in a carburetor can eventually cause a "gummed up" condition due to the fact that the carburetor is not a sealed container; the carburetor will "breathe" and over time the gasoline will begin to deteriorate and the Ethanol therein will cause the collection of moisture (water) from the atmosphere, which contributes to even more rapid fuel deterioration.
Gasoline in a sealed container, with Stabilizer, may can be stored up to 90 days without significant deterioration, but it is recommended to not keep such fuel over 60 days - use it up in some other running unit and replace with fresh fuel when needed.
Also, if the unit is not to be used for over 30 days, it is best to empty the fuel tank, then start the engine and let it run until all the fuel in the hose and carburetor is used up and the engine dies from lack of fuel.
We trust the above is helpful.
Thank you for contacting Husqvarna's Answer Army.
We regret any confusion regarding Stabilizer use, but it can and should be used in any gasoline supply not being used up in 30 days.
However, even with Stabilizer added, gasoline left in a carburetor can eventually cause a "gummed up" condition due to the fact that the carburetor is not a sealed container; the carburetor will "breathe" and over time the gasoline will begin to deteriorate and the Ethanol therein will cause the collection of moisture (water) from the atmosphere, which contributes to even more rapid fuel deterioration.
Gasoline in a sealed container, with Stabilizer, may can be stored up to 90 days without significant deterioration, but it is recommended to not keep such fuel over 60 days - use it up in some other running unit and replace with fresh fuel when needed.
Also, if the unit is not to be used for over 30 days, it is best to empty the fuel tank, then start the engine and let it run until all the fuel in the hose and carburetor is used up and the engine dies from lack of fuel.
We trust the above is helpful.