What level of vacuum should I be looking for when synchronising the carbs?

I don't have my hands on the XJ CD yet.

Thanks for the info.

I believe the 550 is like the 650 or 750, in that the manufacturer doesn't give a specific number that the vacuum needs to be. The important thing is that all four readings are the same.

On the home page, if you click on "links" there is a link called "Daves Yamaha XJ page". It has an excellent guide for synchronizing the carbs in it.

Cary.

Oops! I mistyped. I meant to type XJ700; that is the bike I have.

I'll check out the link.

Thanks.