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Re: The project 710K Begins.
Posted: Mon Mar 30, 2026 3:22 pm
by Alaskantinbender
rmel wrote: Mon Mar 30, 2026 2:56 pm
This dang warning light caused me to carry 2 full Jerry cans
Because when that goes off, I consumed 15 gallons, so I either
press on and hope or turn around and have exactly enough to
get out
That sounds like a problem for sure. I hope not to have the same issue. I had about 13 gallons in my tank. Siphoned out approximately 8 gal, and the light came on. Seems about right, although it's hard to say how much of the remaining fuel is actually usable.
Do you have an idea what the gauge should read with about 5 gal left in the tank?
It would be nice to calibrate the gauge on the low side instead of the high.
I would guess just below the first tick, but really have no idea.
Re: The project 710K Begins.
Posted: Mon Mar 30, 2026 3:48 pm
by rmel
Hard to say. You have a more recent VDO gauge, so you may just have to experiment with it.
Re: The project 710K Begins.
Posted: Tue Mar 31, 2026 11:57 am
by Alaskantinbender
After transferring fuel back and forth this morning with my electric pump can say that the low fuel light comes on at +/-5 gallons of usable fuel left in the tank. So I adjusted my gauge as close to zero as I could get at 5 gal using the low fuel light.
Re: The project 710K Begins.
Posted: Tue Mar 31, 2026 3:54 pm
by Alaskantinbender
rmel wrote: Mon Mar 30, 2026 2:56 pm
This dang warning light caused me to carry 2 full Jerry cans
Because when that goes off, I consumed 15 gallons, so I either
press on and hope or turn around and have exactly enough to
get out
That actually sounds about right, given it's a 20-gal tank. I had it stuck in my head that it was a 32-gal tank from my Unimog days. (OOPS)
I have calibrated my fuel gauge to read zero at the 5-gallon mark when the light comes on. Yes, it's the same as yours and I will have to add another gas can as well.