I got 37km on my first tank of fuel on my sp700. Could en't believe it could be that bad and while I was changing the factory champion plugs to real ones (nkg) I noticed fuel going up the vent tub from the fuel tank and down the steering colum. No wonder my fuel economy is so bad!! Re-routed the vent so I can see it when riding and choke it if it spuse fuel. check yours for the same thing.