Smokes from where ?
strong blow out the exhaust or wafting from under the heat guard ?
Does it do it from the start or only after the engine warms up
What colour is the smoke, black, blue, white, yellow with green stripes ?
does it change if you tip the blower fan side down & / or start side down ?
and a model number would help the USA based techs a great deal
There are a lot of blowers with Troy Bilt on the side of them .