Experienced gardeners share their insights in answering this question :
Hi Robert
Your pump probably needs priming.
Hold the triggger down and squeeze the bottle at the same time to create a pressure inside of the bottle of spray to prime the pump.

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

Re-prime the sprayer by engaging the trigger for up to 30 seconds, until it begins to spray. Check the nozzle for clogs. If the sprayer tip is clogged, don`t use soap or other cleaning agents to clean it. If necessary, clean the outer sprayer surface only with a damp towel.
Answer: According to the product label for the Roundup Ready-To-Use Weed & Grass Killer III with Trigger Sprayer, To Replace the Batteries: Open the battery compartment using a small screwdriver. Remove the old batteries and replace with ne alkaline batteries as marked inside the battery compartment.
Make sure the pump/lid is screwed on very tight. If it`s not tight enough it will not hold pressure. Be sure to pump handle vertically up and down, off centre pumping motions will not build pressure efficiently.
Each battery wand requires 8 AA lithium batteries. To install the batteries, unscrew to cap and install the batteries as shown on the outside of the battery wand. Be sure you only use AA lithium batteries and do not combine old batteries with new.
Usage/Application: Disinfection for Covid – 19. Tank Capacity: 16 lt. Storage Battery: 12V,8A – 2.25 kg. Battery Charging Time: 8-10 Hour.
The batteries at the 9 O`clock (far left, right next to the hose) and 6 O`clock (bottom center) positions go in with the positive side up. The batteries at the 12 O`clock (top center) and 3 O`clock (far right) positions go in with the negative side up.
If your paint gun is not spraying paint at all, it`s most likely due to a clog either in the air vent hole or the hose. Clean any dried paint with a toothpick, and use a cleaning solvent to clear any remaining gunk. If you`ve cleaned your paint gun and find that it still isn`t spraying, take a look at the air supply.
Glyphosate, Weeds, and Crops

multiply and create a resistant population. Herbicides do not cause the mutations that result in resistance. Rather, an extremely rare genetic trait that allows a weed to survive glyphosate may exist in the natural population.

Glyphosate is a Class 7 pesticide, which means retailers are to keep it under lock and key. Or keep it behind the counter so buyers cannot access it without speaking to a salesclerk.
Glyphosate is a Class 7 pesticide, which means retailers are to keep it under lock and key. Or keep it behind the counter so buyers cannot access it without speaking to a salesclerk.
On top of that, research suggests that even at very low concentrations, glyphosate mimics human hormones, potentially triggering or speeding up the growth of tumors. Nearly half a century after its introduction to agriculture the chemical is ubiquitous in the environment.
Reducing the water volume to the minimum required for good coverage will help to ensure maximum effectiveness of glyphosate products. Hard water can also reduce the activity of 2,4-D amine.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Can I use the multi spray with bleach on my pavers to get rid of mold
ANSWER : Yes that will work

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How do you get the top off? – Roundup 2 Gallon Pro Garden Poly Tank Pump Sprayer (Roundup)
ANSWER : Howdy chloebuckski,This is a question that I get quite often. Here is the answer; with some pressure push the handle inward while turning counterclockwise. When you feel the handle sink in, keep turning and you’ve got it.Hope this helps,Coach

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How do you get the top off a Roundup 2 gal. sprayer?
ANSWER : Release the pressure, push the handle down andturn it to the left.

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I got a roundup sprayer at a garage sale. I don’t know how to fill it. It has a model # 020p10 Any assistance you can provide will be greatly appreciated as there is no manual. Larry
ANSWER : The handle pushes down and locks to be carry or to unscrew it. Push handle down, then twist left to unscrew. It may take a bunch of force to start. Better to hold the sprayer down and relieve all pressure before doing the unscrew.

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I have a fimco pump on a 25 gallon sprayer. It is a 2.1 gallon per min. pump. I took it out yesterday to use and it would not pump up, no pressure. Worked fine last year. I checked and the motor is running. Any suggestions as to what to try. Thanks I have a fimco pump for a 25 gallon sprayer, worked fine last year and now won’t pump. I took it apart and everything looks good? The motor runs fine, just wont pump. It did for a little this morning and then quit?

please help

ANSWER : At the end of the pump little square box with one pillpes head ,take it off and there is another screw in there turn it until it works,

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I can’t get the Roundup Professional Sprayer to
ANSWER : Put a little wd-40 or light oil down in the plunger shaft to get the leathers on the pump plunger to seal back against the cylinder wall. Work it a little and u will feel the pressure come back. Maybe some dish soap would work too if u like bubbles.


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Roundup pump sprayer has a spring in the trigger mechanism that corroded and broke. Where can I get a new one?
ANSWER : Type roundup spare parts into your search box then brose the list that comes up

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Sprayer not working right…seems cloged. How can I clean it ?

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