Just my .02 cents and maybe not everyones:

Bottom line this is your decision.

A lot of things we do boils down to good inspections and maintenance practices and not purposely doing bad things or alterations. 

I know I'm about to comment on not always needing to do the 200 hr. carb inspection and I know it's on the checklist, but this is more of a one off for me. 😁

No, I don't so long as they sync up properly and they are synced every inspection, no leaks, no running issues. Replace the diaphragm at the 5 year rubber change. Now you may skip the 200 hour, but at some point you'll need a carb overhaul like everyone else. If you do the 200 hour your just replacing the "O" rings, checking the float brass armature for its proper measurement (most don't know how to do this) and weighing the floats. At every annual or 100 hr I always weigh the floats now, check the bowl for debris and remove and clean the idle jet. I find about 60% of the idle jets partially or fully clogged so I figure I already have the carb bowl off and the idle jet is right there I might as well take a couple of minutes and clean it. Other than these few items that I do every inspection I don't know anyone that has a clue what to look for at the 200 hour. I've never had anyone with a well kept carb have an issue other than a leak which is usually either the bowl gasket or the needle valve isn't seating properly.

Rotax most likely won't like my answer (hope I don't see a drone over the house with a missle attached 😂), but I'm looking back on 25 years worth of Rotax time and maintenance and experience on hundreds of engines. I see some do the 200 hour and that's all good, but far more that don't. The "O" rings and the such inside the carb isn't always about just run time, but age too. "O" rings over the hours and years can dry out and other parts wear due to vibration.

Now this all said something within the carb could become worn out along the way and cause an issue, but you should know when that happens. This could happen at any time. 

Thanks Roger. Well put and I agree 100%.

As you said, any issue that develops will most likely make itself known in time to address it. A sudden catastrophic failure that causes an emergency is almost unknown in a carburetor.

Roger...I hate to be that guy but I need to sort this out.  This is what the dictionary points out.  The term is brass float arm, not armature in my opinion.    

Cheers

Howdy RW,

Hope all is well.

Okay got it, but isn't arm part of armature. 😂

You left out the ":E" definition which is kind of like "D".

"A moveable part of a carb device" 😏

English is full of terms/words that require additional statements /qualification (context) to establish precise communication.

To make matters worse, the meaning of words seems to evolve/change at an ever increasing rate.

Add to this the need to describe technological /social developments by inventing new words.

It's a wonder we understand each other at all.

😈