Depends on the make of engine. If it's their own Chinese sourced engine then you won't get a crank- full stop.
Any other make suchas briggs and stratton or Honda then go to the relevant dealer for that brand. If it's a Honda engine it's not economical to replace- even if you do it yourself. If it's a Briggs engine and you do it yourself then maybe it's worth doing- forget if if you pay someone to do it. It's cheaper, easier and quicker to replace the engine. Providing it doesn't out weigh the cost of the mower.
pleasant
July 2010