I got a bunch of gas in the crankcase from leaving my raptor in the on position, do I need to do anything other than just drain and refill?

Clean and dry the oil filter or just replace it. You should look into why it happened. Just leaving a Raptor on shouldn't do that.

Any other suggestions for why it might happen? I just finished building the bike, was fine for the few days I had the raptor off, then I left it on for about two days and I believe about a half cup to a cup of gas slowly leaked through the carb. Open to other ideas, willing to leave no stone unturned to fix this annoying problem. Im on my second oil change and I dont want to change it again for a while.

In far northern climes, bush pilots used to dump some gas into the crankcase of a hot engine, idle it for a minute, then shut it down and cover it up with blankets, etc.  This makes the oil thin so the next morning when it is 20 below zero the oil will be thin enough to allow the motor to turn over.  10w oil is clay at that temp.  The gas evaporates in the first few minutes of running the next time the motor is started.

So, if you only got 1/2 cup into the oil, I wouldn't worry about it.  It'll evaporate shortly.  I would find out how it happened, though, so you can stop it from happening again.

 
 
Congratulations, you are the next candidate for winner of the Routy Prize for being the very first one to have your float valve in your carburetor leak while wearing a Raptor.    

disqualified -- issue was preexisting again

Sorry Routy



Routy is VERY PLEASED that you have finally arrived.    You validate his long held beliefs (and he has needed that boost, believe me).

(fireworks burst into the air and angels start to sing your praises, then they stop abruptly and go home)



===================



Now, before you say you had a Raptor failure -- think for a minute.   The Raptor is working correctly, simply turning your gas on and off.

In reality, your carb float needle valve is leaking on you (or your float is stuck in the down position in the float bowl)

Turn the Raptor petcock on and take a big screwdriver handle and whack the float bowl a time or three pretty hard to jar the float bowl free.  If your problem stops -- then your float was simply stuck.

If the issue continues, then you will have to drop the bowl on your carb and

1) adjust your float height and check for any burrs and hang up points in the float/valve travel

2) check your float assembly for gasoline inside the float by shaking it and listening for any sloshing inside (very very rare but it does happen)

2) replace your float fuel needle valve (they can be damaged by carb cleaners, etc -- the rubber swells and or dissolves and they stop sealing off correctly)



Question:      Did you just work on your carburetor by any chance?

how will I know if its just stuck, in other words, how do i know the tapping jars it loose and stops the flow of fuel?

 
Sort of a meatball thing, isn't it?   The whapping with the screw driver handle ??

You have a drain at the very bottom bottom of the bowl that in most cases can accept a piece of clear hose.


                                                                 directly above me
Put some clear tubing on it and bend the clear tube up so it goes up the carb body (tape it or tie it so it doesn't flop around) so you can see what is going on inside the bowl.  Crank the drain screw open so the level of the gas sitting in the clear tubing shows the exact same fluid level as what is sitting in the float bow.

The gas level will have to show in this clear tube to visibly be "higher than the venturi"and thus be able to go down the throat, enter into your intake valves and go down your cylinder to get to your oil.    

And believe me, you have to be leaking a good bit to get it all the way up around and down into the oil.



Stuck floats leaks a bunch, bad needle valve leaks fuel by the slow drip --- drip ---- drip  ----   one slow drop at a time.


Put on some clear tubing on and give her a firm whack or two and see if the gas level stays out of the venturi level now.


Question:   Why did you take your Carburetor apart?   Was there an issue of some sort?

Took the carb apart to change jets since I modified the exhaust. I was having this problem before which I belive was compounded by a bad petcock, now if I leave the raptor on it will leak. So I will give the clear tubing a try first and see if it is just sticking.