Trash can enter a riding lawn mower's gas tank through various means, such as improper refueling practices or contamination from the fuel source. Debris can also be introduced if the fuel cap is removed in a dirty environment. To prevent this, always use clean, approved fuel containers and ensure the tank is sealed tightly when not in use. If trash is already in the tank, it may need to be drained and cleaned to avoid engine damage.
To remove the gas tank on a 1998 6.75 hp self-propelled Craftsman lawn mower, first ensure the mower is turned off and cool. Disconnect the fuel line from the tank, being cautious to catch any spilled fuel. Next, remove any screws or bolts securing the tank to the mower's frame, and carefully lift the tank away from the mower. Make sure to handle any attached components gently to avoid damage.
Take a clean rag and stuff it into the tank - it will soak up the water.
from around the fuel cap or the fuel can you use to fuel it. if it is a metal fuel tank then you can get rust built up in it and it starts to flake off
add a fuel treatment to remove water if it is a small amount or drain the fuel and replace with fresh
it will probably explode or it will burst into flames either or its bad
That will vary for each make and model of mower.
bubbles on top of gas in tank
on the fuel line running from the tank to the carb.
You will need to remove and clean the gas tank and the carburetor. Then replace the gas lines and filter.
Possible buildup in the line from the gas tank to the carb.
There will be an inline filter on the fuel supply line from the tank to the carburetor