How to mend Derbi Dtr 125

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

eletronic fault on my derbi senda extreme 03 plate?

i have a brand new 2010 derbi senda xrace ?

My derbi senda 50cc keeps cutting out?

Derbi Senda Excessive Fuel Consumption?

please help with my Derbi terra 125?

derbi senda 54 plate leak?

2003 Derbi Senda R50 6 speed?

how to fix my petrol problem?

is the battery dead?

fixing my dtr 2001 model?

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

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

derbi senda?

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

Derbi Senda 50cc?

my derbi senda sm extreme 2007 ?

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

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

Which pipe goes to where?

runs fast then cuts out?

adam or bb from m?

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

my derbi gp1 open 50cc won't start?

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

Derbi Senda Wont Run When Hot?

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

derbi senda indicators?

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

faring?