No but make sure the gas tank is clean and free from debris, if there is dirt or debris then clean the tank with fresh gas or you can use diesel fuel either way make sure its clean.
no get new gas
regular gas IS unleaded...
Depending on how much water - best to drain tank completely add one can of drygas and re-fill with new fuel
you need to clean ur carb use fresh gas and clean ur tank and shut off valve
.....either ru8n the mkower till it's out of gas or if the tank is removable take it off and dump the gas out of it..if it isn't removable tip the mower over to empty the gas..leave the gas cap OFF so all the fumes evaporate..Gas fumes are the problem..When the tank is empty try to start the engine to use all the gasolione in the gas lines and gas bowl on the carb...
If your lawnmower stops working after five seconds of use, you may need gas. It can also be a problem with your fuse.
Floors mr. clean septic tank
First drain the gas and get the engine cleaner called "GUNK" Then spray in the tank & let sit After that spray and rinse with a garden hose & let air dry.
Go to Eastwood.com and look up gas tank reliner kits. Don't use cola or any other substance that is not specifically for fuel tanks.
Most professionals recommend that you use high octane gas. Like 92-94 octane.
No don't use 2 cylce in the crank case. You can use sae 30 or 10-30 but NOT 2 cycle as it is make to mix with gas and go in a gas tank - never in a crank case.