Welcome aboard TF
Yes lots of MS knowledge here on TF. Don't limit yourself to the MS sub-forum... a Yanmar is a Yanmar regardless what boat it's in.
Also many members that have previously owned MSs.
I have posted some MS parts info on my "Bacchus" website. The easiest to find are the late model 34Ts or 34HTs as I included the BOM which is searchable. For other models & yrs you can only scan the part photos to find what you are looking for. When you open the photos it usually includes the mfg and mfg part #s.