My Servicing Dealer
Find a Specific Product: Trimmers & Brushcutters

FS 91

A professional bike-handle trimmer with simplified starting, improved air filtration and 30% longer run time than the FS 90.

FS 91
FS 91 is rated 4.7 out of 5 by 6.
Rated 5 out of 5 by from Awesome job with blade at cutting small scrub brush. Had a FS 66 for over 40years and decided time to replace it. Have a FS40 for around the house that works great for grass trimming but needed a straight shaft to do heavy brush cutting. Had to take several breaks while using it. It worked harder than I wanted to. Would buy this product again, maybe in another 40years? Still have a very dependable 028Boss chainsaw I've had for over 40years also, and still us it.
Date published: 2017-05-20
Rated 5 out of 5 by from Still 91 trimmer Great tool very powerful and starts up first pull.
Date published: 2017-05-17
Rated 5 out of 5 by from You feel the quality every time you pick it up. Feels secure, starts like a champ, powerful enough to do more than I need. I'm so glad I took the dealers recommendation. I know it's the last trimmer I'll ever need.
Date published: 2017-05-15
Rated 5 out of 5 by from Stout as a mule Best trimmer that I've ever owned, probably pass it on to my kids and buy new ones when the time comes. Awesome product, STHIL is a name you can trust and is still king of the mountain.
Date published: 2017-05-12
Rated 3 out of 5 by from Hard starting and not as powerful as I had hoped First of all, the product is an FS90 - which the review choices say doesn't exist? Maybe that's part of the problem - I have some sort of expired model. Who knows? Followed the starting instructions to a T and will never start using that procedure. Finally took it back to store, where the guy starts it on first pull. I asked him to show me the procedure before he started - nope, just rips the cord and it starts. Well he did it by holding the throttle wide open. NOWHERE IN THE MANUAL DOES IT SUGGEST THAT. After returning home, the same problem continues - the only way it starts is by holding the throttle wide open - product manual is a joke, or this machine is a lemon. I'm not sure which.
Date published: 2017-04-29
Rated 5 out of 5 by from very nice trimmer sthil had maintanance in mind just got the new still fs 91 it is more well defined than the fs 90 has more to offer I love the design of engine it has a cover held on by one screw to access the valve cover and change the spark plug, it user friendly sthil got this one right , also hats off to my sales person ted for know so much about sthil and taking care of me for every sthil items that I purchase for them that why I love sthil they have the best dealer support out of all competitors thank you sthil for another great product built by hard working Americans, if your looking for a awesome trimmer/brush cutter than look no further than a sthil
Date published: 2017-02-11
  • y_2017, m_5, d_24, h_21
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_6
  • loc_en_US, sid_fs91, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_stihl
  • Seasonal Landscaping Tips
  • Special Offers from Your Local STIHL Dealer
  • Guides & How-To Videos
  • Maintenance Tips