Found a Stihl MS 180 C

[Wsully22]

Hi all,

New user who is baffled by new saw (to me). I Found this Stihl ms 180 c saw in the trash when I was dumping some of my own. I pulled it from the bin jerked the rope and it started right up. After I let it sit in storage for several months I tried again and to my dismay when i put on full choke it will run for a few seconds but the choke lever jumps up to the zero position and it stops. I just can't get that lever to stay on the run position. I've pulled it apart but can't see what is causing it.

Also, the bar wasn't in the bin with the saw. What is the longest bar for this model saw. I took an 18" one off another saw but it seemed out of sorts on the ms180. Of course, the saw wasn't running, that may have made it seem out of sorts.

[Steve Bullman]

14” is the most i’d put on that saw.

[pleasant]

14 minutes ago, Steve Bullman said:

14” is the most i’d put on that saw.

Yup. Max recommended bar length on one of those is 14"

 

Re, the choke lever jumping up. If you remove the filter top cover you will see the lever is a black plastic affair which is the width of the back of the machine. One end is held in the body by a circular hole for the black plastic rod to locate into and the other end clips in. These have a habit of unclipping so the lever is just floating around. This could be just your problem, but combined with that is a brass coloured earthing strip which also keeps tension on the black choke lever to stop it flapping around and keep it in position. The saw may have ended up in the bin for this 'problem' It's a simple fix though, if the brass earthing strip is incorrectly located underneath the plastic choke lever rod or has become distorted out of shape so doesn't apply pressure to the choke lever it will need relocating correctly and maybe bending slightly back into shape.The brass strip need to be located on the top side of the choke lever to exert downward pressure- it also needs to earth on the earth wire which slides into the choke lever when the lever is in the full upward off position. Bit difficult to explain....best thing to do is go to your friendly video sharing site at search for stihl ms180 choke lever....the ms170 is the same, and the 171 and 181 are very similar if you can't find a video of the 180

Edited October 12, 2022 by pleasant