I have a newer Bobcat 250 at work that has everyone stumped. It is the only gas welder we have. I am a diesel mechanic which is good because we have 20 diesel welders but only one gas SN# MA180071h . The motor doesn't run it cranks, sparks, and I have fuel after the fuel pump is there something I am missing? I can get it to fire and run for a moment on starting fluid. if i poor gas in the carburetor it will sputter and run for a minuet then die. The carburetor is clean. The motor is a Kohler SN# 4013403941. Is there some kind of electric shut off or something. Thank you in advance.