ROTAX is trying to set a record for most number of service bulletins in a week, I guess. Here's another one:
https://legacy.rotaxowner.com/si_tb...14-060UL_912i-015iS_915i-015iS_916i-005iS.pdf
That one provides the S/N of experimental engines (fortunately, I escape again. There's an advantage to buying an engine too soon and then letting it sit for 5 years).
This one has the particulars, which, basically, is check your expansion tank for leaks.
https://legacy.rotaxowner.com/si_tb_info/serviceb/SB-912-080_914-060_912i-015_915i-015_916i-005.pdf
https://legacy.rotaxowner.com/si_tb...14-060UL_912i-015iS_915i-015iS_916i-005iS.pdf
That one provides the S/N of experimental engines (fortunately, I escape again. There's an advantage to buying an engine too soon and then letting it sit for 5 years).
This one has the particulars, which, basically, is check your expansion tank for leaks.
https://legacy.rotaxowner.com/si_tb_info/serviceb/SB-912-080_914-060_912i-015_915i-015_916i-005.pdf