..ran fine for a mile sputtered and stalled. Attempt to restart was met with engine turning but no fire.  


There's your clue..
Everything ok..
No valves bent, the engine Will run.

If you have a fuel filter on it, take it off, get a new fuel line, factory spec size.

You don't need a professional, just patience and an ability to accurately describe the symptoms and the ability to read, answer questions and do what is suggested.

Using ether to hunt for a leak is good.

I would drain the bowl, catch and measure the gas.
If it's almost empty, then you aren't getting fuel.
When you are trying unsuccessfully to start it, why not shoot some ether in the air box?
When something is giving me fits, I'm not just trying to get it started. I wanna know what is keeping it From starting.
It's air, fuel or spark.
Sounds like fuel.
Before you get it to run and haul butt, only to be stranded, get the battery charged up..
If it's a lead acid, check the water, and that requires removing it.

Johnnyblade wrote on 11/15/16 at 10:53:54:

Got rid of fuel filter. Measured fuel in bowl. It was full.

Well there's your problem right there, the float bowl should NOT be full of fuel. The fuel level should be 6.5 to 7.5mm (about 1/4 inch) from the top of the bowl. BTW, it's darn-near impossible to measure that without using a equal-gravity site tube (aka a piece of clear tubing).

Gary ,you might as well give up ! I've told him what the float level is .why his bike doesn't run ,given him directions on how to fix it and the proper float height. MY guess is he really likes walking! You can lead a horse to water.......... but he's headed to  the stealers!  Maybe he should check Arcreefer's  last 5 pages of posts I think these guys may be twins by different mothers.

JOG, I really don't know if the level in in the float bowl is high ,I tend to think in this case it's low,because the bike sets on the side stand for a few hours and starts,due I think to the fuel level shifting and allowng a small flow into the bowl, but running the bike is upright and the level drops starving the main jet (bike runs out of gas won't restart).It's hard to impress on these newbie s that the carb can be clean,but if the float level isn't set right the bike won't run.

batman wrote on 11/15/16 at 14:41:12:


I mentioned in my ealier posts. that I measured the float level with the vernier calipers and is within spec.anyway...
I did notice my fuel line is only half full and my air mix screw is pretty loose. So I thought maybe I got the wrong screw. Ordered and oem one and it totally different. Took out the air mix screw and noticed the small rubber ring was not on the end of the needle screw. Replaced new oem screw. The fuel line filled right up. So maybe there was something to that. Will test ride tomorrow.

hello! I am sorry for interrupting your trouble shooting. I got similar problem. I run out of gas then I refilled full tank. And can not start engine.  i was trying like 10 times for 5 seconds, once It started for few seconds and stops again. I was trying to start it week ago and today .no luck.

Done as you told! But nothing changed. Starter turns but no fire. After few turn gas smell came out. .

i quickly charged a battery before i was trying to start it all the time . Voltage was 12,4.  But voltage drops very fast! ok i will try to charge a battery to full and then i will try ! This batt is two years old. simplest Pb. Maybe new one is needed?