Question about Craftsman Convertible 25cc. Gas Line Trimmer

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How do you replace the trimmer head on the Craftsman 27cc trimmer (Model 711170)?

I am trying to replace the trimmer head w/a new one but cannot find a way to lock the shaft or prevent the head from spinning.

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  • 31 Answers

U-tube has some good videos on all sorts of replacements on heads , lines...etc.

Posted on Jun 17, 2014


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Posted on Jan 02, 2017

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SOURCE: Craftsman weed wacker trimmer head won't turn

it could still have the broken peice from the old one inside the seat.take it apart and look inside and inspect the seat where the drive cable enters.

Posted on Apr 14, 2010

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My weed starts easily but the cutting head will not rotate

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How do I remove the hassel free head of my craftsman trimmer model 358.791170

I can get you part way there. Remove the spark plug and shove some clean rope in the cylinder to prevent the engine rotating. Take the front housing off to access the clutch assembly, pull off the black plastic cover from the shaft end, and use a torx wrench to loosen the screw in the end of the shaft. After it's loose, the clutch drum will come right off. Unfortunately, I am stuck now trying to get the rest of the clutch assembly off without damaging it.

Sep 17, 2011 | Craftsman 27cc 2 Cycle Crank Straight...

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How do I upload the manual? I want to see how to load the line

Hi and welcome to FixYa, I am Kelly.
Craftsman manuals are avalable for all models on this site:

You must have your model number

Note the model numbers on this page:,%20Gas?query=27cc+Craftsman+trimmer

Once you enter your model number you click on "Get Manual" and then save as to your computer.
Thanks for choosing FixYa,

Aug 07, 2011 | Craftsman 27cc 2Cycle Full Crank Curved...

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Have a new craftsman edger, 27cc 2 cycle. Have used one time. Worked fine. Now trying to use again and won't keep going when cranked.

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Aug 07, 2011 | Craftsman 25cc Gas Line Trimmer

1 Answer

Trying to install a hassle free trimmer head on a 27cc craftsman mod # 316.791190. salesman assured me no problem. I'm guessing that may not be so.

I had the same problem today. Store told me part 71 85740991 would work.
It does not have same shaft to attach. The original has a plastic head which
melts with use and will not work. I feel it is a defective device. They have a replacement part that does work for a while and does the same thing. Sears
should provide a proper head. A higher priced machine has a proper head.
I would like to by the better shaft and head which I think would fit this machine
but am told you can'[t buy. I'm very discouraged with them. Then engine runs fine.

If you find a solution I would like to hear from you. Thank you.

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