See Tread KUBOTA LINKS there is very good links for kubota work shop manuals
I put the link also here (wsm for 70 mm stroke engine-> Z500-B, Z600-B, ZH600-B, D650-B, D750B, D850-B, BH850-B, D950-B, V1100B, VH1100-B, V1200B) 3 parts with engine D950-b part list. good quality...