I asked about this mower and got advice last year.
Now could be time for a funeral.
4.5 hp Briggs and Stratton small mower. $150 new.
Bought new 5 yrs ago for cottage.
Did well for 2 yrs.
I have a 15-20 degree slope to cut. Mostly cut side to side. A bit up and down.
Used some old gas once. May have been 3 yrs old.
The problem may have started then.
Starts well. Runs at lower rpm than did initially and sputters all the time. Worse when moving back and forth.
Tried fresh gas. Premium ethanol free gas. Seafoam. Gas line antifreeze. New plug.
Today won't start after half of lawn done. Fires a bit but won't stay running. Took plug out. Lots of carbon but gap ok. Sanded it clean. No difference.
Do I get her repaired ? Likely not worth while since new one $150.
Is the slope to blame? Get a different engine in a new one? 2 stroke perhaps?
Due to the slope a small, light mower is best. This one was perfect until lately
What would you small engine guys recommend?
Thanks
Peter