long time looker and was for a long time before i bought my bike,i think this site helped me to become a buyer,so many thanks to all. so the question if the bike sits for a few days it is hard starting till i put petcock on prime is this normal or time for the yamaha petcock? o yes the rules 2010 s40 1580 miles kept in a air-conditioned garage in south Florida its whole life. it is new to me as of last week thanks to all great site

It can be normal if the bike is in the sun or someplace that would allow the fuel in the float bowl to evaporate faster than normal.... Normally it takes a week or two for that to happen.  The PRIME position allows fuel to flow into the float bowl to refill it.

Do you see that the fuel is dripping out the bottom of the carb when it is parked.

And if you do get a Raptor Petcock...make sure you get the official YAMAHA part #5LP-24500-01-00.....not a cheap Chinese copy from eBay.  If the listing doesn't show the part number on the white box from Yamaha..find one that does:
  http://www.ronayers.com/Search.aspx?k=5LP-24500-01

think it's time for raptorcock.

might be a bad vac line, or a hard diaphragm, or both.
as you pull up, the low vac might be restricting the flow.
and the carb is sucked dry before you shut off.

i might be cracking the throttle ,i will stop and see thanks. o i get it less vacuum to open that petcock

Think its your petc0ck go here:
http://suzukisavage.com/cgi-bin/YaBB.pl?num=1251932429

follow the post and do everything it says to do to fully test it.....

Other questions are going to be:
Did you drain and refill with fresh gas?
Did you remove your oil fill cap and smell? (if it smells like gas, drain and refill your oil)
Did you drain your fuel bowl?
Is there gas in your air filter housing? or does your air filter smell like gas?
Have you drained the hose under the kickstand area to see if anything comes out?
Just saying..... there are questions folks are going to ask to try to narrow down what is going on... don't get frustrated.... we are old and try hard to remember
Like Dave says..... get the correct Yamaha raptor 660 petc0ck.
and after you install it... when ever you are done riding.... turn it to the OFF position! LOL.... if you don't and have a weak float needle valve... you will still get gas in your oil.