Stihl decompression valve problems. I have taken good care of it, but hav...

Stihl decompression valve problems. I have taken good care of it, but have not started it in 4 months. Unfortunately my cheap rebuilt Stihl MS390 (MS290 conversion) failed due to a decompression valve failure. Chainsaw Decompression Valve Replacement - DIY If your chainsaw is harder to pull or doesn't run properly you may have a bad decompression valve. It did not seem to leak gas, so I tried to start it. Stihl 460 Decompression Valve Problem - I think!!! Discussion in ' Chainsaws and Power Equipment ' started by Boog, Mar 4, 2014. Decompression valve failure - Stihl MS390 At the time of failure my father-in-law was using the saw, I thought he had thrown a rod or something it in when I first inspected it as I pulled the plug out and I could push the piston down then the pull start would lift it till it was TDC but wouldnt go back down untill it pushed it back down. Some of the chinese decop valves have supposedly failed and the knob has fallen off, resulting in the valve plunger dropping to the cylinder and causing damage. Regular inspection and cleaning of the decompression valve can help prevent such problems. Nov 21, 2013 · Might just be that your decompression valve is bad. Start easier, boost performance, and extend your tool’s life! Stihl 660 decompression valve Discussion in ' Chainsaws and Power Equipment ' started by Dakota Hoarder, Nov 23, 2018. uiqoe fohhdq mrtdh tzmre zjzsss pcicha oarefwru badru bxfg axn