Won't start

[hooperman]

I have just replaced the gearbox and put it all back together. However it won't start! Both plugs are sparking, the fuel pump runs when I turn the ignition on. I have put new petrol in. The plugs are getting wet. However I did bash that sensor which is screwed into the exhaust box. Might that be the reason?

Will be very grateful for any ideas as to what I should try.

[slparry]

Which model is it?

Have you lifted the side stand?