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SG 20

A manual backpack sprayer for professionals that maintains constant pressure.

SG 20
Rated 3.9 out of 5 by 32reviewers.
Rated 5 out of 5 by To all the with bad reviews This is by far the best back pack sprayer you will ever buy. You can replace every single piece on it. As a professional pesticide applicator with licensing thru pennstate university and work for landscaping company, I have 3 of these that are well over 5 years old and the only issues are replacing the nozzles when worn, which you have to do for every sprayer because that's normal wear and tear, and changing and keeping the diaphram/piston area full of clean oil. These are used an average of 25 hours a week each by two of us. I have one for lawn care products, one for tree, shrub and flower products, and one for non-selective herbicides. So as I said anybody that has something bad to say about these products, abused them, or do not know how to properly used them or maintain them. Which is scary because they are very rugged and very simple to maintain. The only con I have is they are heavy and that's only due to the high capacity, so to fix that only put 3 gallons in at a time. May 11, 2016
Rated 5 out of 5 by The best sprayer for the money, no question about it. I own Honest Pest Solutions in Lawrenceville Georgia! These are the only sprayers we use. We can afford to buy any sprayers we want regardless of cost.. But the Stihl SG 20 is the best. I think the majority of the negative reviews about these sprayers are clearly operator error. We use them everyday all year long and owning many of them I can honestly say we haven't had any of the problems some of the people on here have had. Plus there is no actual proof they are giving truthful reviews or even own the SG20. The only con I have are the straps could be thicker, more padding. I hope this helps you decide and become a proud Stihl owner like we are! Do the research, educate yourself, and own a Stihl SG 20. I promise you won't be disappointed. May 1, 2016
Rated 3 out of 5 by Bought in 2009 I have been using this sprayer regularly around the farm in my pastures. I have several sizes but I like this one because I have more control on my overspray. We have pecan trees and produce. I can get places my tractor and scooter cannot. I do wish replacement parts were cheaper and easier to get but they are available at my dealer that I have used for years. April 6, 2016
Rated 2 out of 5 by The orange pressure bulb split and cannot buy a new one. The orange pressure tube on the side split even though the pressure in the cylinder was in the low range. So far I have been unable to purchase a replacement orange cylinder and looks like I will have to buy a complete new backpack. The unit would have been used a maximum of 10 times. January 22, 2016
Rated 4 out of 5 by If you need parts, they all come from a dealer This backpack sprayer worked well, until it didn't. I got about 2 years of good use out of it, but when I needed to replace a part, that's when I was in for a surprise. Unfortunately, when I put the sprayer away for the winter, I didn't completely drain the spray wand, and the plastic handle froze, swelled, and cracked. When I went online to look for a replacement handle, I found out that all parts are sold through dealers. I was very disappointed to find that I'd have to go through a dealer for all replacement parts. Not only that, but I couldn't buy just the cracked piece, I would have to buy the whole wand assembly for almost the cost of a whole new complete backpack sprayer. To utilize the remains life left in the main unit, I ended up buying a generic wand for replacement. I won't be buying any more Stihl products simply because the difficulty in obtaining parts for a reasonable cost. January 18, 2016
Rated 5 out of 5 by One of the Best As a professional herbicide applicator, i've found the SG 20 to be simply marvelous. Decent build quality, with power that can't be matched by any sprayer in it's price range that i've come across. While it does have it's issues, it beats every other pack I've come across for one simple reason, maintenance. While most other packs are designed to be used up and thrown away, the SG 20 can be rebuilt indefinitely as long as you've got the parts. On top of that, the entire pressurizing system is located outside the chemical tank, which allows for tear downs in the field with minimal chemical loss. The system it self is dirt simple, comprised of two valves and a pair of ball bearings, and as anybody who uses a tool day in day out is aware, simplicity always trumps complexity. Any broken parts can be stripped and replaced in no time flat with a wrench and flat head screwdriver, which is especially important when you've got a dead line to reach. As someone who puts in ten to twelve hour days, five to six days a week, seven months out of the year...this pack has become as crucial as my ATV. I used to go through one or two packs in a year, Now I'm on my forth season with the same unit, and only a hand full of parts replaced. August 21, 2015
Rated 1 out of 5 by My pump has quit working twicw in one year. Which warranty wont cover. Buy a cheaper sprayer, as it works as well or better and will last longer than my stihl did July 27, 2015
Rated 2 out of 5 by Great at first I loved this sprayer when I first started using it. Wondered what took me so long to get one. After about 10 uses over a years time, I filled it up one day and it simply would not work. Fluid came flooding out of the piston. I always run plenty of clean water and air through the unit when finished spraying. I will look for something different. July 15, 2015
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