The muffler has filled up with oil, and is simply burning off. Just check the oil level (since some of it is now in the muffler, you may need to top it up). Then let it run until smoke clears. Could be up to 10 minutes.
phil_saunders@bigfoot.com
Phil Saunders
June 2008
I can answer this question...
mountfield sp474 lots of white/blue smoke after about 2 minutes running?
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