I would still use the oring. For a $1 at any parts store it's better safe than sorry. The Rtv is just extra protection

 

Actually I was wondering that same question about using the o ring too. Actually I may have figured out the problem, not sure yet, cuz I have to get a new spacer. When I tightened the spacer between the carb and the intake, it cracked. I am assuming this spacer is suppose to be more flexible than hard like hard plastic. So I am thinking this spacer may have been cracked all along leading to a huge vacuum leak. Ill update you after I find a new gasket.

Why do they use this spacer anyhow, why not just a gasket between the two?

Now I heard these things are basically Chinese Honda motors, could I possibly get this gasket from a Honda dealer you think?

 

Romeo, I just got my atv idling real good..the spacer is black and hard plastic on mine. What I did was like Zrock stated, I used the sealant with the rubber O ring. no paper gasket used. Then I waited 30 minutes...depends on the sealant to set.

 

You could probably get the part at your local dealer. When I order parts I give them the name brand part # I'm looking for.
You could do a temp fix on your cracked plastic using a plastic epoxy. It's a 2 part mix and works great. It's made by prematex. The spacer is their so the fuel and air have a chance to mix before entering the cyl.

 

Buyatvsonline - Chinese Atv Parts Scooter Parts 110cc Parts 150cc Parts 70cc Parts 90cc Parts 50cc You can try this site if you need to order the gasket. They have cheap prices, just watch the shipping.