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Oh , now I see what you pointed out.  But in fact what you thought was the air/gas screw was the exposed hole where the vacuum hose had been.  I sucked on the vac to get the old gas to drain out...  The thing you thought was where the vac hose belonged was in fact where the fuel + fuel filter had been.

Alleyoop

Hey alleyoop,

Yeah I put those hoses back on.  I was in the middle of draining gas and just wanted to see which was the air ratio screw.  can you tell from that pic?

The idle stays at 5000 rpm, and ocassionally wants to jump up to higher...

Tx man!

As for the restricter, that was removed.

I hit 50 on downhill the night I bought this. And it sure felt like 50.

Hey can you, rich or allwyoop tell me which screw in this close pic is the idle screw and which is air ratio screw?
Alleyoop you sent that grest tutorial about adjusting carb to go more lean or rich. I'd like to test that out.

Note that in this pic the fuel and vac hoses are pulled off the carb...

Also, any tips on how to get the fuel hose and vac hose off the carb?
Freaking things don't wanna budge!

Thanks,  jwhood32, good to know!

Hey guys, great info!

Rich, I really appreciate you taking the time to ID those various lines in there! I'm gonna go ahead and drain the gas using your instructions and alleyoop's pointers.

By the way guys, I just started 'er up and on a regular idle, I saw visible, light, smoke emanating from the exhaust. pretty sure that is a good sign. I took a vid and will include it in a sec.

After I do the new gasoline test I'll try the carb adjustment alleyoop suggested.

Also, tx for the input in re the oil, guys. I'm gonna keep the pre-mix idea in mind for future reference. Now I just want to find out whether the source of this issue is "bad gasoline" or a carb air-to-gas ratio issue.

tom

Thanks for the great tutorials, Rich!  I will look those over.  I will also remove the storage compartment to expose the engine, etc., and will take some pics of it.

Alleyoop, thanks for the compliment!  She's a beaut!  

Now, as to the potential "bad gasoline" issue... I will drain the tank if that is called for, and then replace gas with 93-grade unleaded. Maybe that is all that is needed.

As for your questions about oil, I cant see smoke coming out of the exhaust when I rev, but yes I have been smelling a slight burnt smell when riding.  In fact, when I left the seller's house i asked him about it and he said that some oil gets burned off in the driving process.

Anyway, you should know that the oil tank is more than 3/4 full of the same oil the seller gave me when I left his place.  I don't know much, but it sounds like the oil is not the issue.

Just to be sure, I will include a video here I just took of the scooter when idled and when revving on its center stand.  It is uploading now to dailymotion.com, and I will include it in the next post.

As to the lean/rich issue, I have read up on this, and now I know what it means for an engine to run "lean" or "rich."  I cannot tell you which one it is if either.  It ran perfectly the night I bought it, but now it conks out.  I'm willing to test this out at your suggestion.

Question:  What makes you think that is the issue?  Also, before I plunge in and start fiddling with the carb (never done that before), is there a way for me to test it to see if indeed there is a "lean" problem?

Thank you both for your insights!!  I want to sort this out before the end of the weekend, if it kills me.  You're giving me great leads.

Rich, pics of the full engine are forthcoming after I get the storage compartment pulled off.

tom