Year of manufacture, TBO details

Some engines (like yours) can be looked up online at the Engine Configuration Search (Link in SUPPORT/BULLETINS menu above)

Search Result

Engine Serial Number: 6773501
Engine Type: ROTAX 914 UL
Engine Version: 914 UL2
Certification/Approval: Approved according to ASTM F2339
Model Number: 309140010
Warranty Start Date: 09/17/2009
Warranty End Date: 03/17/2011
Rotax Care: No

I'm new in rotax owns. I need to now about my 912 ULS

Serial number 4425012

1) Manufacturer date ?

2) Tbo

3) Any ad,recall, modifications to increase hp or fuel economy?

Please find me  the manufacturing date of 912UL Ser# 4400520

Thanks