On Jun 26, 6:22*pm, Ned Flanders wrote:
I have a small tiller I bought second had - 4 stroke. It ran well the
first year and then it developed a small problem. I can start it (fresh
gas, clean oil), but as soon as I pull on the throttle it stalls. when
it stalls I get a little blow back out of the throat of the carburetor.
Also if I take the oil cap off while it is running there is blow back
coming out of there as well.

I am not afraid to rip it down, as I can do minor engine repairs. I was
just hoping someone might be able to point me in the right direction.

I am thinking a gasket...

It's not worth taking in for repair as the labour would cost more then
the thing is worth.

If it starts and then dies when the thottle is being opened, that
means it is running a lean mixture. This can be caused by many things
such as a dirty carb, bad gasket between carb and head, loose
headbolts or bad head gasket, valves need adjusting.

Start with tighening everything down. If that don't get it, check
vavlve clearance, then replace manifold gasket. Since you have the
carb off, clean it thoroughly.

Hank