Exmark motor question

Mossyoak10

Forum Newbie
When I cranked up my mower it shot out a little white smoke and stopped. What could have caused this? It's a new mower
 
My mower did the same thing for about the first 50 hours. I then switched to synthetic oil and it quit smoking at start up. My dealer said the Koehler engines need time to break in.
 
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