ysb8

I need some help. My YSB-8 runs well except for a small amout of exhaust steam but I am confused as to why I seem to get much more water flow out of the siphon break into the scupper than acutal output of cooling water through the waterlock and out the exhaust. I have checked all the hoses and...

We are enjoying our '78 E-27 thoroughly, but we sometimes think she's a bit underpowered. She is equipped witha single cylinder Yanmar diesel YSB-8. Our understanding is that the YSB-8 generates about 7-8 H.P. While fine under most circumstances and EXTREMELY frugal in fuel consumption, we...

Here is the link to Yanmar's YSB8 diesel engine manual http://sailboatpower.com/EngineManuals.html Thanks to Niels Ulrik Blaabjerg for sending it to me originally.

I finally installed a Tiny-tach to get an idea of the RPM being turned by my YSB-8. It looks like around 2500rpm at 4.5kts on average on my E-27. I believe the max rpm on the YSB-8 is somewhere around 3200rpm. Does all this sound about right?

I have a 1978 Yanmar YSB-8 in my E-27. I ordered the owners manual from Torrenson's but that is really of little use. I am searching for the service or maintenance manual. Can anyone help me? Mark