finding the Rotax engine manufacture date and model

Dear Admin 

Could you please help me with 912 100hp S/N 6779265. Thanks.

 What's the manufacturer date for m5171494

4417758 was produced 18-Nov-1998

Engine Type: ROTAX 914 UL

Engine Version: 914 UL2

Model Number: 309140010

TBO depends on what servicing has been done to the engine (TBO can be extended in certain cases)

4417758 has TBO of 1000 hrs / 10 years if TBO was not extended, or 1200 hrs / 12 years, if the TBO extension procedures were carried out.

Here is the LINK to SB-914-039 (UL)

"Extension of TBO for ROTAX Engine Type 914 (series)"

6779265 was produced 21-Oct-2011

Engine Type: ROTAX 912 ULS

Engine Version: 912 ULS2

Model Number: 309120110

Original Factory Configuration:

• without fuel lines
• UL2 I=2,43 with clutch
• without vacuum pump
• with green valve covers
• without mech. tachom. pick up
• without external generator
• without air guide baffle
• with std. temperatur sensors
• with nipple conn. for oil pump
• with expansion tank
• without air box
• without engine truss
• starter large

5171494 was produced 24-Nov-1998

(no additional information is found in the factory database...)