ive been using a garden sprayer to diesel the hopper

but i want to use it straight from the fuel tank via maybe compressed air ?

does anyone know how to do this?

I always hated using diesel myself, seems to stain the paint and not work as well as oil.  I'd prefer a 5 gallon bucket with a screw on lid and a brush.  Now I use a sprayer off of my agitator and it's the best thing I've had so far. Just a thought.

Edit, with used hydraulic oil in that bucket.

I don't think its a good idea to hook any thing to your fuel line.We use a sprayer. We mix it 50/50 diesel and used hyd fluid from our oil changes.  Works great

I mounted a air tack behind my backsplash ,run air line to it with a shutoff and use diesel with form oil works great with presure washer handel.But i work for a wall co.all form oil i want.