I recently purchased a JD 420 lawn tractor with a Linamar engine. The machine is around 20 years old.
I changed the fuel pump and the fuel lines, but the engine still does not get enough gasoline.
How can I check out if there is enough vacuum to run the pump proper and what can I do to solve the problem?
I changed the fuel pump and the fuel lines, but the engine still does not get enough gasoline.
How can I check out if there is enough vacuum to run the pump proper and what can I do to solve the problem?


