This is the original Herbi4 Xtra herbicide sprayer which is now marketed as the MH-1. This used sprayer works properly though I don't think I was using the flow control properly when I tested it.
There may (or MAY NOT) be an issue with that. Please scroll down through 23 pictures; text between most pics.
The picture above shows the whole assembly and pics below show the working parts with explanations below the pics. The spinner above (black) has a fine toothed edge which makes for a dispersal of almost a mist of herbicide. The yellow part determines some of the flow and there are other colored tips stored on the handle as shown below.The Herbi4 refers to the herbicide aspect of course and the 4 foot spray pattern. This sale item is the Herbi4 Xtra; the extra aspect is the handle shown above and the flow control lever.
As mentioned above I don't know if I was using the flow control properly or not since there are no instructions with this gear. I don't see why the flow control wouldn't be working properly as this unit is in near perfect condition. Note: the currently produced Herbi is called the MH-1 and has the standard handle arrangement. The Herbi 4 Xtra is a hand-held spinning disc sprayer for the Controlled Droplet Application (CDA) of herbicides.It can use CDA formulations or traditional water-based products. At total spray volumes of only 2.5 gallons/mile. The consistently large spray droplets of around 250 micron minimize any risk of spray drift and fall in a precise 4 wide circular spray pattern. The large black knob in the bottom part of the picture above is the on/off rotating knob which complets the circuit providing 6 volts of current from the 4 D cell batteries (not including in this sale) to the motor at the spinner. The flow control button is shown above.
The black fixture with a white hose coming from it is where the bottle of herbicide mixture would be fastened on. The white tubing is simple an air-release so the bottle would be able to dispense fluid properly down through the hose that runs to the spinner. At the time this unit was manufactured it was made by Micron. A group based in Great Britain. The pic above shows the standard Herbi4...
Note it does not have a bottle. Both pictures have some parts in common and are shown here to aid in explaining how this unit works.One of the two will come with a cap. The on/off switch on the left (above) and the screw-on where the bottle goes. If you look carefully at the black edge close to the green surface above you can see the fine edging (like on a coin) that makes the fine droplet spray in a 4' circular pattern as it is being dispensed.
The unit comes with a snap-on cover for the spinner, but it comes off pretty easily. Shown above is one of the two (2) 2.5 liter bottles you will receive.
With the bottle attached the unit is ready to use. The Herbi4 is used for band spraying and can treat about 2 miles of length in one hour. Applications include general clean-up, border, pathway and strip spraying e. In orchards and plantations and spraying of larger areas by making consecutive spray passes.
Check out my other items. The item "Herbi 4 Xtra Herbicide Sprayer Large Handled Lance 4 Foot Spray Pattern" is in sale since Saturday, June 27, 2020.This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Weed & Pest Control\Weed Control\Herbicides & Fungicides". The seller is "movieman990" and is located in Stockton, California. This item can be shipped to United States.