I recently got the 7hp stumpjumper from this guy who barely used it. You can tell it has little to no wear i mean the muffler screen was still silver on the edges .not black yet ,but i took it out and runs great but every once in a while. If you let of the gas and get back on it it dumps white smoke for like 5 to 10 seconds than it is good again. Any input is well taken i dont wannq harm the motor any more if i am or if something is wrong i wanna fix it. Thanks

is it burning any oil?

Choke off?

yes choke off oil level looks to be fine no oil leaks any where on the motor or dripping on anything

if its that new, chances are it probably hasnt even set the rings yet. could be getting just a little blow by for now.

Thanks

Try turning the adjustment screw on the carburetor about 1/2 turn counter clockwise, you might be running a little lean.

Check the oil. You might have too much in it.