Smoking Lawn mower? got engine started but when it started unpromising smoke comes out...

got engine started but when it started unpromising smoke comes out the muffler, we waited a while but the smoke never died down. how do you fix this?
Answers:    if the smoke is blueish consequently oil is going into the combustion chamber or it can also be contaminated fuel. transform the gas if no change later oil is going into engine(gasket problem) if you know how to replace an engine gasket afterwards this should be a walk within the park, if not hold take it to home depot contained by (tool rentals) they can fix it or will help you find who will
Sounds close to you have a discouraging carburetor or your fuel intake (choke) is stuck