had problem with os 46 fxi engine where it was stopping on vertical took down fuel tanl replace some fuel lines cause noticed oily residue in line leading to muffler will be teting agin today hope it solves the problem.

It could have been the lines, but it could also be running too lean. That will cause it to quit on the vertical

tried it out it's working engine had been running great for close to year suspected tank cause had fuel leak and had to take it out before .