Hello my brothas. Recently I have purchased a 1987 LS650 from its second owner. Bike has 5,000 miles on it, no previous wrecks, garage kept, in great shape. Previous owner re-jetted the carb so it would run rich, but it floods easily now, causing me problems on distance rides and occasionally when i ride to work. I'd like to throw on a brand new carb matching stock as close as possible, or replace with one that y'all suggest to improve function. Any suggestions for a newbie?

Thanks!

-Onepumpchump

Are you sure it's flooding?  Do you see fuel running from the overflow?  Are you sure it's not fuel starvation?

Suggestions:

#1  Make sure you have a genuine Yamaha Raptor petcock. the stock petcock sucks and causes all kinds of problems.  Some related to flooding and some related to starvation.
#2  Change your oil and make sure it's not contaminated with gas because of #1.
#3  Clean the carb and fuel tank.  If the problem is intermittent, It's probably rust or debris getting lodged in the float needle.
#4  Replace the float needle/seat and adjust the float level if needed.
#5  Clean or replace the diaphragm/slide assembly.  The coating on it wears over time causing it to stick.  This would cause intermittent fuel starvation and it happened to me.