first you will need to determine if it is surging due to a fuel issue or governor issue. to do this hold the throttle linkage at the carb from moving. slightly higher than at idle. if it stops surging then it is the governor that needs to be reset. if it continues to surge then you have a fuel issue
plug it in and push the on button
i have to say Honda or toro
http://www.planopower.com/store/honda/index_mowers.shtml
six
There's no governor on a Honda Nighthawk 250. A Honda 250 Nighthawk is a motorcycle, not a lawnmower.
Honda 215 lawnmower
you press lightly on the brake pedle
Gasoline.
6.5 at 3600 rpm
If it has an idler control valve, and most do, I'd go with that.
There is none you suck the oil out with a pump provided by the dealer.
The most powerful Honda lawnmower is the Honda HRX217HMA. It is $899.00 and has the best rating. The next one is the Honda HRX217HXA. The third top one is the Honda HRX217VKA.