Black smoke on start of my Hunter 28 (2GM20G Yanmar engine)

[Davidasailor26]

In addition to Gary’s suggestions, keep a log of engine hours between refills. After a couple refills you’ll get a sense for how much fuel you burn per hour. With that you can always know how much fuel you’re down, generally to at least as much accuracy as a typical gauge.

 

[Tally Ho]

I have a 2GM20F and I burn about 1/2 gallon per hour of motoring @ 3,000 RPMs.

But check the top of your tank and look for some sort of visual gauge…like this:


It may not have a wire connected. This is a actually a mechanical fuel gage and there is a little visual gauge under that dirt.

But more importantly, I learned that this gage will drive an electric fuel gauge…which I installed at my helm.



But if you can’t find a gauge, put 5 gallons of diesel in the tank (or fill it) and start keeping track of how many hours you use the engine.

I made a little spreadsheet that I enter engine hours at the end of the outing, and it keeps track of how many hours. Or you can keep it in a paper log.

Greg