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White smoke?

White smoke appears when I start the lawn mower.
Craftsman 7.0
Rick, October 2005
Is that an overhead valve engine?
If it is a leaking valve seal will make the engine smoke at start up. Then as the engine runs it will burn out the oil that has leaked past the seal, and the smoke will stop.

Rick, October 2005
link Click here to see other fixes for Craftsman 7.0.