On May 3, 12:52 pm, Tony Hwang wrote:
Nelly Wensdow wrote:
I have a 15-year-old Sears 4hp mower that I change the air filter, plug &
oil each spring. It started & ran fine last week for the first mowing, but
now it acts like it's running out of gas. Runs full fast then slows way
down, back up again, etc. What could be causing this? TIA

Hi,
Fuel delivery problem? First I'd try with gas tank cap off.

Yes, fuel system is the likely place to start. Dirt, gumming up of
the carb, sticking float, etc are possibilities.