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How To Winterize a Master Manufacturing Sprayer: Essential Step-By-Step Guide

If you own a sprayer and live in a place where the temperature drops below freezing in the winter, then this blog is just for you. Winterizing your sprayer, will keep internal parts lubricated, protect against corrosion, and keep your sprayer from freezing. Below is a step-by-step guide you can easily follow. This start-to-finish guide will help explain what items are needed and steps to follow for the winterizing process.


To make this job easier, we have provided a list of tools that you will need before you begin to winterize your sprayer. Ultimately, this will help you get the job done safe and efficient.
• RV Anti-Freeze       •Containers      •Gloves


Step-By-Step Directions

  1. Flush Tank – Fill your tank with clean water, turn on your sprayer and flush out your spray gun by pulling the spray gun trigger. If you have a broadcast sprayer, you will need to flush out your broadcast spray boom as well with clean water. We recommend doing this process outside in an area where the left-over chemical will not affect your surroundings.
  2. Let Dry – After sprayer has been flushed out with clean water, remove clean water from tank drain port. You can speed up the drying process by using compressed air to remove all excess water from your tank.
  3. Add in RV Anti-freeze – Pour RV anti-freeze into the tank. Take your spray gun, point into the inside of the tank, and pull the trigger. Continue to hold until RV anti-freeze comes out of the spray gun.
  4. Remove Attachments – If you have a broadcast sprayer, remove the nozzles and nozzles strainers from your broadcast spray boom. Grab containers and either hang or sit below the open ports where the nozzles were removed from. Turn on sprayer and once you see RV anti-freeze come out, the spray boom is now winterized.
  5. Drain RV Anti-freeze – After your spray gun and broadcast spray boom have been winterized, drain remaining RV antifreeze from the sprayer tank into a container using the tank drain port. Don’t forget to condense all RV anti-freeze into one container. Follow the RV anti-freeze label for proper disposal.
  6. Storing – Store your winterized sprayer and removed parts in a clean and dry place. This will help ensure that your sprayer will be protected from frost damage during freezing temperatures.





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