Bike idles high and dies if EV off
First time caller here. I just bought a 2005 Rebel 250. 13k miles. I bought it private party last week. They had it for 3 years in the garage with a total of 50 miles put on it. They bought it used at a "shop". I road it home and it seemed okay. After about 50 miles put on it, the idle started to race, even with clutch disengaged. I noticed the Enrichment lever on the left handlebar was 3/4 of the way toward me, which is I assume means the choke is almost fully on? There doesnt seem to be any writing that actually tells me if toward or away from me is when increases or decreases the mixture. Is all the way away from me off?
Even after the bike is warm it seems to idle high and will die if I dont have the choke/EV on at least somewhat. Since the problem I have changed the oil, installed a fuel filter, changed the air filter, changed spark plugs, drained the old fuel and replaced with ethanol free fuel. I have not removed and cleaned the carbs yet. As this problem seems somewhat specific, I hoped someone on here may have run into this very issue.
Also I sprayed WD-40 around the boot from carb to AF housing and didnt notice any changes to idle. I havent removed and cleaned the carb (which I am willing to do), but wanted to see if cleaning the carbs is chasing ghosts or is there a common issue that could cause this? Thank you for reading.