It sounds like you are burning oil. Is it dense, or just a thin cloud. Check your oil level, if it is too high, you can force oil around rings and burn it. The rings on the pistons could also be shot. What year/model/etc. is it? Also, be sure to check your oil every time before mowing, and after for that matter. This will prevent overheating, and also a premature rebuild.
White smoke is usually an indicator of moisture/water in the system where the "white smoke" is actually steam. There may be heavy condensation or water inside the muffler and the heat of the exhaust is turning it into steam. You can remove the muffler and drain it or you can just let all the moisture/water evaporate eventually.
white smoke is usually due to large amounts of oil in the muffler. if the mower was turned on its side for a period of time the oil will run into the muffler and when you start it it burns the oil out. after the large cloud starts to dissipate the smoke should start to change to a normal blue color and then disappear as it clears out
Oil burning
its probably burning oil, if the smoke is white. if the smoke is black, it means its running rich. if the smoke is white, you have serious internal engine problems
white smoke comes out when you use wrong gAS, Like if itsays only UNLEADED and you put diesel,,then you will see white clouds.
It is need of a service.
to much oil in unit or it was tilted and oilleaked out of the case and the extra is being burned off
One reason that a lawn mower may begin to smoke is that the oil chamber is too full. Spark plugs that have burnt oil and are not cleaned can create smoke and other exhaust issues.
its burning oil :(
Probably to much oil in the crank case. Otherwise mixture control on carb. is off
my mower intermitling smokes a white smoke and fouls the plug over time. is the rings stuck?? will marvel mystery oil in the gas and oil eventually free up the rings??? thanks ,porbet @ aol.com
Bad piston rings, oil level is too high, check the oil level and adjust
not secured properly, user sockets
no... for there to be white smoke there is water in your combustion chamber if there was too much oil it would be black smoke Black smoke is usually to much fuel and blueish white is oil. So yes it is possible that it is oil in the combustion chamber.