How to mend Derbi Sm50

i have a brand new 2010 derbi senda xrace ?

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

adam or bb from m?

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

derbi senda?

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

eletronic fault on my derbi senda extreme 03 plate?

my derbi senda sm extreme 2007 ?

Derbi Senda 50cc?

Which pipe goes to where?

derbi senda 54 plate leak?

fixing my dtr 2001 model?

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

2003 Derbi Senda R50 6 speed?

My derbi senda 50cc keeps cutting out?

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

how to fix my petrol problem?

Derbi Senda Wont Run When Hot?

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

runs fast then cuts out?

faring?

please help with my Derbi terra 125?

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

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

derbi senda indicators?

my derbi gp1 open 50cc won't start?

is the battery dead?

Derbi Senda Excessive Fuel Consumption?

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?