9-Series Carb Removal Without Affecting Sync?

I have always done a carb sync every 100 hrs.

I like to do it. For me, a gratifying action/activity. It not only ensures that any changes to the actuating cables or other wear have been adjusted for, ensuring the engine is operating at its best,  it is required in the Rotax service schedule;

Maintenance Manual Line,  chapter 05-20-00, Page 13

A carb sync was recently done, so I don't need/want to do it again right now.

I know it's possible to take the carb off without affecting the sync settings as Dean Vogel demonstrated it.  I stupidly didn't video him doing it, so now I'm not sure how.

Anybody know?

Sorry - was responding to the 200 hrs & need to inspect. The inspection followed by reinstallation & balance would normally be part of the 200 hr service.

Bear in mind, if this engine is fitted to an an experimental aircraft, there is no requirement to inspect - its a recommendation.

Assuming all was well at the recent carb balance & 5 year rubber replacement done (if required) and there being no other contra indication's, your carbs are likely in good condition. 

Having opinioned the above - I would get it done.

Well, I am having an issue at start-up. Sometimes, when I crank it, it doesn't get above about 800rpm.  But, if you shut off the fuel pump when it's doing that, it will start, and then you can turn the fuel pump back on, and it's fine.

Dean says this is likely an issue with the float needle valve and I should do the float needle valve test in Section 73-00-10 of the heavy maintenance manual. I'm guessing that it probably just needs the cleaning of the 200 hr inspection.

Easy to remove carb and not affect the sync.That said what I'm going to say usually doesn't, but it can affect the sync a little.

Remove the fuel line, (remove both the throttle arm and choke springs) remove the choke cable off the carb, remove the throttle arm off the carb. unscrew the top two screws on the carb dome. Now lift the dome off, remove the spring and the piston (a.k.a. slide). Then when you remove the carb the cables will remain attached and in their last position on the carb dome. Loosen the rubber carb socket clamp and the air intake hose. Now push the carb back out of the rubber socket and it's now in your hand.