I would say that the carb is dirty, it needs to be taken apart and cleaned (all the jets and the sump need to be cleaned out with petrol). i would suggest you take it to your local mx macanic to get it done, for it is a tricky job.
thanx jules.
NGK BR8ECM
the spark plugs might be old
NGK BR8ECM Standard with a 0.024 gap
what oil is used in a ktm 65
no
my sons 05 ktm 65 sx has 5
Its more than likely the transmission
pull the clutch in and kick it over, or roll it down a hill
Impossible to answer, depends on what model KTM you have.
no it does not
try putting your bike in gear and rocking it back and forth...its called priming the piston..only way i can start my ktm cold
KTM 65 SX uses .5 L of Motorex Top Speed $T 15W50