Yanmar 75 fuel consumption

[edsailing]

Any one able to give me information on the likely fuel consumption of a 6 month old Yanmar 75?

[Inthewind]

This will give you lots of information including a fuel consumption graph.
http://www.yanmarmarine.com/uploads/...JH/4JH4-TE.pdf

[edsailing]

Yes, I'd seen that - was more interested in getting feedback on actual experience in use

[Inthewind]

I have the same engine but mine is 125 hp. I burn about gallon an hour at 2000 rpm. My 63 hp Perkins burned about 3/4 gallon an hour at 2000 rpm. Your engine can burn anywhere from a half a gallon an hour up to 3.0 gallons an hour depending how you run it and how your propped. Are you turbo charged? Many variables there to consider. You can figure you will burn about 3/4 gallon or less an hour at 2000 rpm.

[Zanshin]

I've got the 4JH4-TE on my boat and my fuel consumption is roughly along the lines of the manufacturer's specs. I haven't installed a gauge that measures actual fuel use but do log my hours/RPMs and rough consumption and most of my engine use is for motorsailing on passages. I've got a Gori propellor with the "overdrive" function; so that skews the consumption/RPM/load equations a bit, but overall I do see about 4 liters per hour @ 2300 RPM. It certainly guzzles quite a bit more than the previous Yanmar engine I had, a 4JH3E 56HP model.

[edsailing]

Thanks for that, everyone, it's given me a good idea of what to expect.