bur/spur on needle

So, I was working on getting a buddies 2000 yamaha 650 vstar running. needed a carb cleaning. I cleaned it and it ran good. Then it started acting like there was crud in the seat again...pissing gas all over the place. I took it apart again and found something interesting... There were a couple burs or spurs on the side of the needle. I think they got a little corroded from sitting two years. Anyway, I sanded the burs down with some super fine sandpaper... then away we go!

Thought I'd share this with everyone... I'm lucky that I noticed it, otherwise it would have happened again.

Good tip. I have seen this in a set of BS32's from a GS750 before.

One thing I always do when cleaning carbs is I run my fingernail along the needle from top to bottom. If there is any imperfections, you WILL feel it. You can even feel any wear on it. You will be surprised how much you can feel doing this. Do this on the float valve needle also on the tip.

This one was on the float needle, not the main needle.

This one had rubber tips, so there wasn't any imperfections.

One thing that was cool was on the backside of the seats there was a small screen to keep crap from passing through and getting stuck in the seat. If my 750 had those they would have been plugged solid and not allowed anything to pass!