Advise on building a small sprayer

[MOW ED]

Any advise on the ins and outs of building a small lawn sprayer. I'm really looking for specs and tips. I am thinking about a 25gal unit that can sit in the catcher of my Walker. I'd have to fabricate a boom assembly. I'd like to stay simple to start with a 12v pump. Mayby add a 20ft hose for spot shots.
Anyone done this or have manufacturers to suggest for parts?
Let me know what ya think. Thanks

[Evan528]

You can buy a agri-fab pull behind sprayer with a boom and just mount it on the back of your walker. I think there only 260 bucks at lowes!

[tpirobert]

I bought the 15 gallon AgFab unit ( at Lowes ) to install on my Toro Z. The tank will mount between front casters and boom on back of mower. In my research I found this to be the simplist, most economical way to get what I needed. I'll probably use the wheels that came with the unit on some other project. Unit cost $267. You can also find spray supplies at Northern Tools, Gemplers and Tractor Supply Company. If you do a search on the Web, there are many others.