6777983 is a ROTAX 912 ULS produced 11-Feb-2011
original factory configuration:
with 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
You will find your TBO data published on page 4 of this document: [url=legacy.rotaxowner.com/si_tb_info/serviceb/sb-912-057-ul.pdf]legacy.rotaxowner.com/si_tb_info/serviceb/sb-912-057-ul.pdf[/url]