Stihl 201 problem

[pleasant]

Sounds and looks like you have constant drive to the clutch drum sprocket, which like spud said could well be a broken clutch spring. With the saw off and the bar and chain removed can you easily spin the drum by hand and is there any unusual rattling from that area. Its only an e clip holding it all in place....put a cloth over it and use a screwdriver behind the cloth to ping it off.....the cloth stops the clip flying off never to be seen again. Then pull the drum off. There shouldnt be much resistance is everything in there if ok 

Edited October 27, 2023 by pleasant

[spudulike]

The OP had the issue back in August. I would reckon he has fixed it and just not told us if our previous diagnosis was correct or not!!