How to mend Derbi Senda Xtreme

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

Which pipe goes to where?

Derbi Senda 50cc?

adam or bb from m?

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

faring?

derbi senda?

My derbi senda 50cc keeps cutting out?

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

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

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

i have a brand new 2010 derbi senda xrace ?

2003 Derbi Senda R50 6 speed?

derbi senda indicators?

how to fix my petrol problem?

Derbi Senda Excessive Fuel Consumption?

my derbi senda sm extreme 2007 ?

please help with my Derbi terra 125?

eletronic fault on my derbi senda extreme 03 plate?

fixing my dtr 2001 model?

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

Derbi Senda Wont Run When Hot?

runs fast then cuts out?

is the battery dead?

derbi senda 54 plate leak?

my derbi gp1 open 50cc won't start?

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

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

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

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