How to mend Derbi Senda Fuel

i have a derbi senda 50cc, on starting it revs straight up to 900 rpm. ?

2003 Derbi Senda R50 6 speed?

my derbi senda sm extreme 2007 ?

adam or bb from m?

derbi senda 54 plate leak?

please help with my Derbi terra 125?

derbi senda indicators?

Which pipe goes to where?

how do i open the valves fully on my dtr 125 02 model?

how can i fix my derbi senda x-treme indicators?

runs fast then cuts out?

petrol is pushed through the exhaust port on my derbi senda 06?

i have a brand new 2010 derbi senda xrace ?

how to fix my petrol problem?

Derbi Senda Excessive Fuel Consumption?

fixing my dtr 2001 model?

my derbi gp1 open 50cc won't start?

how to reset the service light on my Derbi terra 125?

eletronic fault on my derbi senda extreme 03 plate?

Derbi Senda Wont Run When Hot?

faring?

my sons derbi 50cc bike was going yestewrday then it started to smoke a bit?

derbi senda?

my derbi senda's spark plug turns black after one run? plz help?

is the battery dead?

how can i get my head bolts out they have snapped ? derbi gpr?

My derbi senda 50cc keeps cutting out?

Derbi senda , no fuel coming through the pipes from the tank to the carb?

My derbi senda has orange spark and won't start ?

Derbi Senda 50cc?