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FS 91 R

A professional trimmer packed with features for simplified and convenient trimming.

FS 91 R
FS 91 R is rated 4.4 out of 5 by 56.
Rated 3 out of 5 by from Ditch the 91r and start making the FS 90r again. The old saying "if it aint broke don't fix it" applies here. The changes made from the 90 to 91r, are not significant enough to make any difference in usability. They use the same amount of gas and are not any lighter in weight. I run a mid size landscaping company and use mostly Stihl power tools. Last year we purchased 4 new trimmers which turned out to be the FS 91r. I will never buy a new model first year out again. Stihl knows the issues, as I'm sure they've been filling a lot of warranty requests for the new model. All four trimmers I bought last April 2017 had to be taken in for warranty work within months of purchase. Mainly due to the shaft coming warn at the clutch and failing to spin the head. My other gripes are that the small changes to some parts in the engine are cheaper and not as durable. Now they're hard to find because most suppliers have not switched over to the new model. Lastly, now I have four 90's and four 91's so I have to order different parts for essentially the same machine. This year I'll probably look into older models used on EBay to add to my fleet.
Date published: 2018-03-07
Rated 5 out of 5 by from AWESOME! I have two of these in my lawn care setup and they are the best trimmers on the market!
Date published: 2017-12-08
Rated 2 out of 5 by from FS 91 I purchased this product from Ace hardware. My other trimmer was stolen. I wanted the previous model just like the one I purchased 6 months prior. I was given the FS 91 model because the 90 was no longer available. Big mistake buying the FS 91. It’s a pain trying to turn it on. I still don’t fully understand how to turn it on. The 90 model was so simple to turn and easy to maneuver. The price was also overrated. The FS 91 quality is like a residential home owner product. It should not be categorized as a pro product. I wish I can get my money back...
Date published: 2017-11-29
Rated 5 out of 5 by from best value-for-money trimmer on the market starts very quickly, third pull for me. surprisingly light, considering its size. very powerful. love the rubber grips, too. It is a very comfortable trimmer, great for prolonged use. Also, I can cut around 15 yards on one tank of gas. my only complaints are the lack of a detachable shaft, and it can be difficult to disassemble the head to restring it. I have to use a flathead screwdriver. I have used many trimmers, this is the best one. very good trimmer for the money.
Date published: 2017-11-07
Rated 5 out of 5 by from Perfect size I bought this trimmer to clear out shooting lanes. I bought the 3 blade cutter for clearing saplings and briars. The trimmer has plenty of power and not real heavy. Super fuel efficient.
Date published: 2017-11-01
Rated 5 out of 5 by from This product is dependable and powerful This trimmer started right up after the cold winter months. Ran all spring and summer with no issues. LOVE all Stihl products!!
Date published: 2017-10-28
Rated 5 out of 5 by from FS 91R works well So far it has done all it is advertised to do. Starts pretty quickly, runs like a Stihl should, and is hassle free.
Date published: 2017-10-25
Rated 2 out of 5 by from Low on power and high on gas consumption This is my first Stihl product and I was excited to buy it. I purchased a Stihl FS91R a week and a half ago. I used it once. I did a lot of research and was going to get this or the Komi 91. After talking to the dealer I went with this and ordered the edging head to swap too.It starts up great and idles very nice. After that it loses it's glamour. When trimming it doesn't take much to slow it down, and anything thicker than a blade of grass it is unable to cut, Instead the line wraps around the weed stalk, or I have to take smaller bites through the grass. When at full throttle it sounds like the engine is starving and doesn't have a nice consistent engine purr. I also noticed that when going from idle to rev it to cut I can hear a metal clunk like the clutch is engaging. This should be audible. I only ran one full tank of gas in this, and was only able to trim my yard and my neighbor's when it ran out of gas. I am disappointed because I expected so much more from the Stihl product. I finally retired my old MAC trimmer after 23 years. it had much more power and ran great. It effortlessly mowed down grass, weeks, and small trees with little effort and only a weed trimmer line (no special brushcutter head). With my old machine I was also able to trim for about a month or more before having to refuel. Maybe I should just return the Stihl and buy a new ZAMA carburetor for my MAC and put it back to work. For a brand new machine this Stihl should not have to go back for work right from the start. This is not a satisfactory machine. I expected more especially since I went a step up from homeowner to the professional grade. Would I ever be losing business if owned a landscaping company and had to rely on this? Yes I would.
Date published: 2017-10-20
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