Yanmar is SAE 6 and an adaptor has been purchased and is on its way to mate the
gearbox to the engine. Some modification will be required to fit over the
Yanmar will be coupled up with the hearth gearbox from the old BMW. The BMW bell housing has a 290mm (A) adaptor
plate this is slightly smaller than the Yanmar,
which is probably a SAE#5.
D12 has been put to rest after 20 years of faithful service.
step is to couple the Yanmar 1GM10 up with the existing Hearth gearbox.
BMW to Yanmar 1GM10