Posted March 5, 201311 yr Hi recently bought a 1985 DT 125 in fairly good condition for my son. No leaks, starts first time on kick. however the problem comes in when riding its not idling properly and when reaching high revs it seem to cutout. 2 questions really; Is it compression related? Is it carb related, if Carb, how does one get instructions on setting the carb appropriately. Help
March 5, 201311 yr Hi ther " be more specific" Idle - is it ok when cold ? when warm is it reving higher, Cutting out ? is it 4 stroking [ spluttering] at what revs, and does it die completely.? How long has it been standing without use ? = fuel petcock remove and clean , carb off and take out ALL jets, - set air screw to manual settings, then we"l talk crank seals,,
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