Service intervals
I have a trike with a 912ul. The trike sat for many years because the original owner suffered health issues soon after buying the trike and couldn't fly. I bought it in 2018 and it was 15 years old but with only 240 hours. It now has 430 hours. The serial numer is 4,405,637. I have found MANY different service schedules that never completely agree. Is there a definitive schedule from Rotax for this engine?