Hi NormK,
You have the point here. Sticking needle likely to happen when mower is left sitting for a while the reservoir or bowl is full with fuel prior for storage which always keep the float up and putting sligh pressure to the valve. When the lower part or the Viton Tip dried up, it may likely to stick to the seat. If this is the case, this can be prevented by closing the fuel tap and running the engine until it stop prior for storage. Means the needle will drops.
Cheers,
TheCarby
