I have an Oleo-Mac 600mm rotary 198cc Honda engined beast. Now I have cleaned the carb out, the Easy-Start is just that. Second pull every time. But it is a heavy bugger. So, I also have a very light Bosch 450mm rotary lithium battery powered for the smaller areas where walls and fences exist.....there are combs on the sides of the mower that push the edge grass into the cut.