AutoCut® Line Head

AutoCut® 36-2AutoCut® 46-2AutoCut® 56-2

C 4-2


C 5-2



C 25-2








Mowing head that uses nylon line. Advances cutting line when “tapped” against the ground. AutoCut® C versions reload line by simply inserting line into eyelets and twisting bump knob.


Important Information
WARNING! Improper use of any power tool may cause serious or fatal injury. Read, understand and follow carefully the operating and safety instructions in your instruction manual before using such products.

STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.
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AutoCut® Line Head is rated 2.5 out of 5 by 85.
Rated 4 out of 5 by from easy spool -only easy with stihl line and a knowledgeable salesman The shop from which i purchased installed and said it was good to go. i could never get it to bump feed. was completely fed up with it. Then, i bought a ms-170 chainsaw from springs valley hardware. The salesman recommended a round stihl line and explained how the lower polymer lines melt inside the head. he also said it should be bumped at speed rather than not moving. Installed the new line and it has fed everytime i bumped at speed and the line lasts tenfold! it has worked amazingly but i understand the reviews as i would have given a 1 star review last year.
Date published: 2017-06-09
Rated 1 out of 5 by from I'm dumbfounded by the bad design of this product. This is the worst design Stihl has ever put its name on.The feed just doesn't work, ever. I have to stop, manually press while doing a 3 fingered yank-job in the middle of every 40' of cut. I had a 1984 weedeater that had better 'auto-feed'. The Youtube video I was emailed repeatedly is NOT the new Autocut, It's an older system for gas-powered trimmers. The Autocut C5-2 is different, poorly documented and completely frustrating for the end user.
Date published: 2017-06-08
Rated 1 out of 5 by from Will not auto feed Wound and rewound the line, it just will not auto feed. Auto feed head is next to worthless.
Date published: 2017-05-17
Rated 1 out of 5 by from Runs and cuts well - when you can get the line to feed Purchased a FS56RC trimmer, pleased with how easy it starts and it seems to have plenty of power. Unfortunately the auto cut feature does not work well, I have tapped on the ground, banged it on the ground, high RPM low RPM, same results. Spent 30 minutes on hold with Stihl tech support, finally gave up and left my number. I have read quite a few reviews, sounds like I am not alone. Looks like the response from Stihl is to tap at high RPM, note that page 35 of the manual instructs one to do it "with the engine running" and page 31 of the manual instructs not to run at high RPM for the first 3 tank fillings. Don't think it's my line winding skill, as I am still on the original new machine load. Guess I get to make the 1 hour drive back to the dealer. Funny, our old weed eater was a bump feed, ran for years without problems. Expected better from Stihl.
Date published: 2017-05-08
Rated 5 out of 5 by from Excellent product I have owned a FSE-60 trimmer with the auto cut head for 5 years, using it weekly all summer long edging 400 ft. of concrete and 200 ft. of trimming, and have never had a problem loading string or advancing line, I do bump it firmly on concrete, asphalt or dirt. I would estimate another 2 years use before replacing the AutoCut C head.
Date published: 2017-04-28
Rated 2 out of 5 by from FS-40C Purchased Stihl Fs-40C bushcutter a few months ago. Very soon the cutter head would not feed the line. I always have to stop the motor and manually feed the line. The bumper/bolt combo came apart. I carried the plastic bumper in my pocket to tighten the bolt after removing it to obtain the line. Yesterday I dropped the bolt and could not fine it. It appears the bolt is a dedicated one, and cannot be obtained locally. I went to the local dealer for a new bolt. He had no idea that there was a bolt on the cutter head, and said that he had none. He checked Stihl online and could not find one. The metal grommets on the cutter head are nearly worn away. I am disappointed that this machine is not of better quality. I think more engineering is need to much improvement it.
Date published: 2017-04-12
Rated 1 out of 5 by from Same complaint everyone else has. Doesn't feed the line even when used correctly This Line head came with my dad's new Stihl FS38, and despite using the correct size of line and installing the line correctly, and having the engine full speed to do the 'bump' of the line head on the ground to feed the line, it only worked about 5 out of 50 times of use. After that, I got tired of tipping the weed cutter upside down and pulling the line out manually. It got to the point where I couldn't even pull the line out manually, I had to take it apart to get any line out. I got fed up with the whole thing and ended up buying a Dura-Cut line head with the Dura-Cut, single line that you just pop right into place. The price I paid for those Dura-Cut lines, I thought they would last longer, but they didn't last any longer than regular line that comes in spools.
Date published: 2017-04-11
Rated 1 out of 5 by from Does not function properly I have a Stihl FS 45, purchased 12/21/09. It worked fine until yesterday. On 2/22/17 I purchased an Autocut C 5-2, yester was the first time I used it. It would not feed the line. I took it apart to check the line, and replaced the line with new line still would not feed. I took the head only to the dealer where I bought it, they checked it over and could fine no problem. I purchased a new autocut because to finish my lawn. I installed it on my trimmer and it would not feed line. I managed to pull out enough line to finish my lawn. This morning I call your tech rep. he told me that you have to run the trimmer at full throttle. advance the string. The instruction sheet that came with the autocut said about have to use full throttle.. I am going to take the trimmer to the dealer and see if they can make it work. If not I will just buy a new trimmer, but not a Stihl.Frank D. ThurlowVista, CA
Date published: 2017-04-07
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