Hi there bought a sled for 100 bucks few months ago with a locked motor, came to the conclusion it was toast, so i bought a beater sled with a rebuilt bottom to top Rotax 470, but heres the problem.....
didnt run when i got it, compression tested 155 - 160 both sides. Cleaned the carbs there was about an 1/8 inch of green stuff in the bowl and all inside the carb never seen that before had to scrape it out when a screw driver before using my carb tooth brush believe it or not, but there completly clean now.
He said he Advanced the rotary valve some to give some more throttle response and that it did but it idles VERY high, the carbs where out of sinc so i fixed that, the idle screws are 1 3/4 turns out and high speed jet is 1 1/2 turns out.
Is this causing it, I noticed that the throttle cable comes down to where the rotary valve is right ontop of the intake manifold and i was going to adjust it but then i thought, is this for the oil injectors? if i adjust it there will it mess something up??
anyone with ideas?