How To Fix A Locked Up Chainsaw. If the piston locked at the top of the bore, you won't be able to raise the cylinder. If the sprocket will not turn then you know it’s locked up and time to replace the guide bar.
Many decades ago, i used to repair stihl. It is frustrating to break out your chainsaw for the season only for it to be stuck. View more tips and advice articles for your gas powered chainsaw.
By that i mean it will most definitely be more expensive to replace than repair. Fix back the washers, the pawl, and the spring clips. Worn starter rope or pull rope.
Remove the bar and chain and set them aside until the brake mechanism is unlocked later in the repair. You can check this by removing the bar and chain from the saw. I have pulled the kill wire to troubleshoot and still no spark this should eliminate any safety switches, i also used an ohm meter and safety switches seem to be working fine.
Some times only new rings will work if the grooves are not to bunged up on the piston. It should spin a few rotations. Most of which are very expensive to fix.
And your gas chainsaw’s engine starts, but the chain won’t move. Simply tighten the tensioning screw until the slack is out of the chain. If the piston locked at the top of the bore, you won't be able to raise the cylinder.
If the chain on your chainsaw won't move, but the saw runs perfectly fine, you most likely bumped the safety feature. There should be tension in the rewind spring. We’ll go over some of the most common problems that make the chainsaw hard to pull, and simple methods to fix them.