FS-MM Trimmer Attachment

Image of fsmm
Pair this trimmer attachment with your STIHL YARD BOSS® Wheel Kit for a quality, cost-effective trimmer mower.

Product Description

Now you can turn your STIHL YARD BOSS® into a quality wheeled trimmer, adding ease and convenience to your trimming tasks – all for much less than the cost of a dedicated trimmer mower. The STIHL FS-MM trimmer attachment features a dependable STIHL AutoCut® 25-2 trimmer head for precision cutting tasks. To advance the line, just tap the trimmer head against the ground. Need to change the trimmer head? The FS-MM trimmer head is designed to be removed and replaced with a wide range of STIHL trimmer heads, including STIHL SuperCut™, FixCut™, DuroCut and more!

See it in action!

Note: Must be used with wheel kit.


FS-MM Trimmer Attachment is rated 3.8 out of 5 by 20.
Rated 1 out of 5 by from Won't advance Bought the MM 56 with FS-MM Trimmer Attachment for a heavy hill side trimming job for a customer. String will not advance unless you hold the middle handle with one hand and just above the trimmer head with the other and bang it on the ground repeatedly very hard. Could not get it to advance many times and a had to take the head down to re wrap within an hour... I gave up and threw it back in the truck. Very disappointed in this head.
Date published: 2019-08-25
Rated 5 out of 5 by from Great for clearing random scrub brush quickly Used this for clearing scrub brush in behind strip mall. Other landscaper used hand held line trimmer. I completed three times as much area as he in the same time period while walking behind, as if using a push mower. Easier on the back too.
Date published: 2019-06-28
Rated 5 out of 5 by from Awesome This attachment is the best weedwacker I have ever bought, easy to use , easy changing string ,
Date published: 2018-08-21
Rated 2 out of 5 by from Not Happy with trimmer Not happy with the angle you have to hold the trimmer at to trim at a low level. Trimmer is hard to maneuver to trim at a short cut. Head and string are too high off the ground to trim adequately.
Date published: 2018-08-03
Rated 4 out of 5 by from Got trimmings done quicker Have a high wheel trimmer but is very cumbersome and loud. This worked great. Amount of debris being tossed was less and did not travel as far or fast.Motor super quiet. Fuel efficient.Changing the attachment is very easy.
Date published: 2018-07-21
Rated 2 out of 5 by from Not for Manicuring Garden Beds, Great for Brushy Areas I bought this because I do landscaping and wanted a trimmer that wouldn't kill my back. I owned a used Stihl trimmer that worked great, but really hurt my arms & back after any extended use. While this trimmer is on wheels & alleviates that, it is nearly impossible to do any edging to clean up edges of garden beds. You can't flip it like a normal trimmer to get a clean cut or move the head at an angle to get at tight spaces. Great for overgrown areas that don't need to be manicured and just need cut, but horrible for sidewalks, garden edges, etc. If there is some tip or hint at how to achieve a clean cut- I would love some help. Otherwise, I will probably be selling this unit. I have been very disappointed with all of the attachments except the tiller.
Date published: 2017-11-28
Rated 4 out of 5 by from FS Trimmer i like my trimmer.It does a go job.it is light weight and easy to use and to carry.The charge last a long time.No more string to mess with which i love. I highly recommend it.
Date published: 2017-09-29
Rated 5 out of 5 by from Back-Saver I purchased this to trim around my pond. The Stihl KM130 with a poly head can get heavy. This works great! Cut my trimming time in half and saved my back. Buy with confidence. No line feed problems for me.
Date published: 2017-08-26
  • y_2019, m_11, d_10, h_23
  • bvseo_bulk, prod_bvrr, vn_bulk_3.0.0
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_20
  • loc_en_US, sid_fsmm, prod, sort_[SortEntry(order=FEATURED, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING)]
  • clientName_stihl

We Also Suggest

For Your Safety


Read what our customers say about STIHL Multi-Task Tools
STIHL Limited Warranty
Product Instruction Manual (PDF)
Contact Us


My Preferred Dealer