Hi guys. Need some pointers. I have a 2007 s40. A few weeks ago I stalled out decelerating to a stop during a ride and couldn't get the bike started again with out keeping the throttle up. Every time I let go of the throttle the bike would stall. I got home and adusted the mixture screw on the carb (external screw) and it ran fine for a few trips. Now it started again. I had replaced the petcock with a raptor last summer so figure possibly float problem. I thought I could fix it by taking off the bowl only. But... realized thats not how it works. Hence I need a new bowl gasket. Also. I noticed today after struggling to get it going that the puke tube had at least 4 table spoons of gas in it.   Think that's from me flodoing it? I drained it since. John

Having trouble getting the bowl off?
bat box in the way?
put a strap around the box and pull it back till it clears the bowl.

what puke tube are we talking about?

Is this starting to sound like the TEV?
He reported no mods, and, as long as the idle speed is kept up, it's not gonna die during deceleration.

Will it idle?
Did you have to adjust anything to get it to idle?

TEV is that circle/triangle thingy with the three black allen screws. It can get gunk in it. Open it up and clean the tiny passage, but be careful not to damage the black plunger.  NOTE that there is a spring in there so hold it on with a finger when taking off the last screw or it will bounce off!

(stole the pic from this forum somewhere )

Could be the Idle circuit.....the pilot jet has a tiny little metering hole in it.  When a carb gets dirty or gunked up - that is usually the first thing that becomes clogged and doesn't allow fuel to flow.

It can be accessed by dropping the float bowl, and using a small screw driver.  If the jet has been in there a while...sometimes they are hard to remove without stripping the screw slot (the jet is made from brass and can be easily damaged).

If the pilot jet is clogged from something getting pulled up by the flow of fuel....you may be able to clear it out by removing the idle/fuel mixture screw - and spraying carb cleaner into the place where the screw was.......and maybe a gentle blow with compressed air. (If you take the mixture screw out - it is best to first count the number of turns needed to lightly seat it - that way you can get it back to where it was before you removed it).

If the pilot jet is blocked by corrosion or gum.....it can stick  really tightly into that tiny hole, and sometimes you have to soak it in cleaner or run a very small wire through to get the junk dislodged.

I really stink. I found the TEV pretty easy but... it has regular screws in it not Allen screws. I tried hard but couldnt budge any of em. Started to strip one so left it alone. The bike only has 7k miles on it. Is it normal for a carb to get gummy that quick I rode it all winter last winter then slowed down in the spring and summer due to family health issues. Only about 2x a month since april 2016. I changed my air filter even though I did this last fall. It's not too dirty but it is it normal for it to smell strongly of gasoline?

It's not normal for the filter to smell strongly of gas,fuel can only enter the carb by way of the float valve . You need to check the valve and valve seat ,and float level . If the level is to high fuel has two places to go,out the carb to the air filter or into the cylinder past your rings into your oil. you should remove your oil filler cap and see if you can smell gas in your oil. Is your Raptor petcock a Yamaha or a fleabay purchase ?