I have a Sears lawn tractor with a 16hp Onan twin that I bought this summer to blow snow.
I've used it several times and have had the problem that after it runs for a while the engine runs rough at high speed/under load.
I've had the air cleaner off during one of these spells, and it appears that it's dumping in too much gas and actually flooding it out. Run, dump gas, flood out/lose power, run, dump gas, etc. It will usually correct itself if given time or shut off and started another day. If I lower engine speed during a flooding spell, it seems to smooth out and run fine.
Any thoughts from you Onan experts? When it runs it is a great tractor and really blows the snow.
I've used it several times and have had the problem that after it runs for a while the engine runs rough at high speed/under load.
I've had the air cleaner off during one of these spells, and it appears that it's dumping in too much gas and actually flooding it out. Run, dump gas, flood out/lose power, run, dump gas, etc. It will usually correct itself if given time or shut off and started another day. If I lower engine speed during a flooding spell, it seems to smooth out and run fine.
Any thoughts from you Onan experts? When it runs it is a great tractor and really blows the snow.