Hurth Transmission Identification

[FPNC]

The ZF 15M would meet the ZF "pleasure craft" rating for 50 hp @ 3000 RPM, but ZF does not recognize sailboats as falling into the "pleasure craft" application. Which excludes displacement vessels. You might want to up size if you want a warranty. If you photo tach the crank and the prop shaft, you can determine the reduction very closely.

[Uncle Bob]

Originally Posted by Gulf60

Rob, Thanks for the response. I have taken a look at the PRM as a possibility. I am assuming that other than the 50mm difference it was a direct match up? Best Peter

Hi, physically the same except for the extra length, but the control lever is on the other side and I needed to reverse the linkage at the control lever, not difficult and well worth the effort.

[Uncle Bob]

https://www.cruisersforum.com/forums...1&d=1654557290

https://www.cruisersforum.com/forums...1&d=1654557290

Hi, a couple of pics of what was in my boat behind a 50hp kubota if its of any use.

[Gulf60]

I have all the Beneteau Manuals for this boat and the perkins manuals too. Nothing on the transmission. I am assuming it's in the vicinity of 2:1. I've read the spec sheets on the ZF15. It's in the parameters. Considering the the engine is showing a lifetime 4,500 hours it's withing the ZF15 duty cycle. Just make sure you don't skimp on the fluid changes and if possible I'd put a cooler on it for whatever that may be worth.