Join Date: May 2011
Location: New Orleans, LA
Jet/screw depth consolidated
First, I know I'm not the first to say it, but I can't tell you how helpful this site has been to a non-mechanic Vulcan resurrector like me.
Mine is a 1985 VN700 my uncle gave to me when he "upgraded" to a Harley (no comment). Cosmetically it's in great shape, but sat in his garage for 10+ years w/o being started. So the carburetors were all varnished, the tank was rusty, the battery needed replacing, and some electrical connections needed cleaning, but I got it running in no small part thanks to this site and my Clymer's.
I've already taken apart and cleaned the carbs once w/ Yamalube Carburetor Cleaner and compressed air, but kept having them flood about 20 minutes after I would ride it. To the point that the spark plugs would need to be removed and the starter turned over to get the fuel out of the spark plug slots. This would only happen after actually riding it, not if I just let it idle at 1500-2000 rpm for 10-20 minutes on the center stand. I had also run two full bottles of SeaFoam through the tank with no relief. I assume it was a stuck float, but wasn't sure if maybe I had the jets and screws incorrectly seated. I don't even know if that would cause the flooding, but want to do everything I can to get it right this time.
So, I've just finished taking them apart again, and will replace all the gaskets this time (which actually looked fine to me the first time, but since I'm doing it again, figured I'd just replace them all.) There were some residual varnish flakes (not much), but the floats/float valves all looked good. I've seen scattered recommendations in these forums, but I'm mainly looking for a definitive answer to the proper number of turns for each of the jets and screws all in one post.
The bike has all the original equipment, no modifications have been done above stock parts.
Specifically, I need the number of turns back out for (numbers listed are from the blow-out in the manual):
1. Pilot Air Screw attached to the throttle adjust (I assume that just goes all the way in)-16016
2. Pilot Air Screw next to the vacuum nipple (supposed to have a plug on it, but mine were plug-free)-16014
3. Pilot (Slow?) Jet-92064
4. Main Jet-92063
5. Drain Screw (I assume all the way in)-92009
Any advice is greatly appreciated in advance. I also apologize if this already exists somewhere, but I couldn't find it.