I have a early 90's Roper BST300AR Lawn Keeper. This is also referred to as either an AYP or Sears.
It is a 20" front wheel drive self propelled mower with a Tecumseh 3.5 motor.
I cannot get the motor to "Run" it will start up for a moment, even get to high RPM but as soon as it empties the primer it dies.
Spraying starting fluid in gives same result, starts up but almost immediately dies off. i get only about 5 seconds of run time.
I have changed oil, spark plug, air filter, fuel line, fresh fuel, cleaned carburetor (best I can), I have checked the dead man cable and all seems to be fine.
If anyone has any suggestions I would love to hear them.