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Is the back silver item a removeable cap? Is it the same size as an oil tank (2" NPT)?
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I use the diesel clean white bottle in all of mine. The oil company uses the same stuff for freezing in the winter. I would highly recommend you chat with people in your area about keeping diesel free of goo. What works for me will be radically different for you in Florida. I don't get the heat or humidity remotely close to what you all get. The only consistent thing that works is keeping the tanks out of the sun in the summer. There could be some additives in your area the diesel companies use for storing it.Alright… got parts inbound… thanks to several members here.
Is it recommended to add anything to the ULSD for these generators? Does there seem to be any consensus on whether lubricity additives (in addition to the usual biocides for algae prevention) are either necessary or advisable?
The favorite choices seem to be Sentry Diesel Plus, or Pri-D.



I use Opti lube XPD for the lubricity ) in everything as well. Everything other than the skid steer also gets ATF added in.I use Opti-Lube XPD because I use it in my truck. They make an agricultural variant that has more biocide to prevent algae growth and they have the most lubricity by far of any additive. If you have biodiesel in the B5 tp B20 range you don’t need any additional lubricity, but you will have issues when it gets cold sooner. Also, no need for cetane booster in these engine. It won’t hurt, but it won’t help either.
You have smart bugs down your way. Mine find the tiny spot of each door corner and wiggle in that way. I used some basic caulk to cover them up. They haven't figured out the open grills yet.You gentlemen can tell me if I’m being an idiot here…
But I GREATLY dislike opening up my generator to work on it, or service it… and encountering a nest of Vespula sp. (wasps) of whatever size/stripe. Not that they don’t serve their ecological niche, but they don’t need to be in my generator. Even mud daubers (though less aggressive than the social wasps), still make a mess by plastering their mud nests all over everything.
So I resolved to keep the stingy little buggers out of my machine. I got some adhesive metal, cut some screen, and am using Neodymium magnets to attach it to the housing (took advantage of pre-drilled holes, but otherwise didn’t want to make new ones).
I don’t think this setup will have an appreciable difference in airflow or temperatures, but if it will, I’m open to being called out and reproached about it.
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What’s the hole in the bottom of the generator? I have looked around inside, and I don’t see any holes.
There's a large hole directly under the engine, there's a sheet metal cover over it with a 1" space and usually foam between the space.What’s the hole in the bottom of the generator? I have looked around inside, and I don’t see any holes.
Aha... totally didn't see that.There's a large hole directly under the engine, there's a sheet metal cover over it with a 1" space and usually foam between the space.
Mice can easily climb in through this hole.
It can be covered with hardware cloth or screen from underneath the generator.
Totally agree with LITD, you can install the bung/pickup the military uses. It vents well and allows you to pickup fuel just above where any water may settle in the bottom of your tank. You may have to customize your pickup tube length to sit 1/2” from the bottom as it is designed to fit a 5 gallon Jerry can or extended to fit a 55 gallon drum. If i recall correctly it accepts a male 1/4” NPT fitting in the bottom of the bung. They have a clean look and function well. View attachment 963002
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