Original post by: Wesley Parker ,
the breather is clogged which is the reason mower will not start. White smoke is an indicator of a blown head gasket and/ or moister in the fuel related components. Blue smoke would indicate high oil consumption, clogged breather, oil soaked filter, or worst case, piston ring failure, and/ or seal leakage which would require an engine rebuild. So, thank goodness it's white and not blue smoke.