oil injection-impeller pump

[james skidmore]

how do i delete the oil injection and what is the proper mix, 50-1? i feel safer mixing it myself is it worth it?<br />my impeller pump is not working is that complicated to replace? its a 1986-1987 DT75 2-stroke 3 cyl. i just took the carbs and cleaned the varnish out of the bowls and emulsion tubes at least it starts now without spraying gas into the carbs!!!