SERVICE BULLETINS

The best way to check for "potentially applicable service bulletins is to do a "search by production date" function .

For example, if your 6771689 912UL2 engine was produced 08-06-2015 then go to this link https://www.rotax-owner.com/en/support-topmenu/service-bulletins

then click the "By Engine Model" button, select  "All Type 912UL Engines" , click the 'Select Date Range' tick box and enter 06/2015 as the start and today (in this case 07/2023) as the end date. Then press the "Search" button towards the bottom. 

This will generate a complete list of EVERY possible bulletin that could potentially be applicable to your engine!

(Search By Date is a little more accurate than using the 'select by serial number' search, which can have some grey areas...)