http://www.ereplacementparts.com/article/1771/How_to_Remove_a_Trimmer_Clutch.html

This is a good article on removing the clutch at the address above (related to many two cycles). I felt it would have reversed into replacing âÂÂJust As EasyâÂÂ, with some torque values included.

Be Careful! I learned the hard way w/o enough torque on a chainsawâÂÂs clutch. By my feel I had plenty torque on the installed clutch. When I killed the engine the clutch and etc flew off (running it tightens itself). Checking for oiling I had the side cover and bar off but instincts had me holding it away from my body (as the parts flew all over the garage.

Thanks for the reply.
And yes I saw that video.
They need one for putting it back together.
I understand centrifugal clutches, but this S clutch is a weirdo.
I would like to see a video for installing one of these and making adjustments like bending etc.