I have a Homelite UT10926 16" chainsaw. The motor runs but the chain doesn't move on the bar. The chain is not too tight. I took the bar and chain off and the axle the chain runs on will not turn - it appears seized. I couldn't even turn it with pliers. I was using the chainsaw and all was working fine. I stopped to refuel and add barchain oil. When I went to restart the problem occurred out of the blue. Any thoughts?
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Re: Chainsaw chain won't move on 16" Homelite bar
One solution you should all be aware of, especially with electric chainsaws is the automatic oiler. The oil is pushed into a hole in the rear of the bar where the chain picks up the oil and carries it around the bar lubricating the chain. Sawdust can accumulate in the oil hole till you can't get oil in it anymore. When the chain starts to get dry it gets hotter and hotter and starts burning up what lubrication is left on the chain. As this happens the chain gets tighter and tighter because it no longer flexes like it did when it was lubricated and can actually shrink and get so tight it locks up the chain. Loosen your bar and the chain, take the bar off and clean out the oil holes. Run it until the chain gets re-lubed then re-tighten the chain back to optimal tention.
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How long has the chainsaw been sitting? How long has it been sitting with the same gas in it? Typically, most chainsaw and weedtrimmer repairs are fuel related. More times than not, simply draining the old gas, and putting brand new fresh mixed fuel just purchased from the gas station will fix most non start problems. Many people will not believe me, but after 20 years of fixing small engines, i've fixed 70% of the chain saw and string trimmer and related sized engines by putting in new fuel. Fuel goes bad now a days in 30 days. So if the fuel in the gas can sitting in the garage is older than 30 days it is old when you are considering trying to use it in a small engine. Fuel in a car will not cause the same issues as quickly for several reasons. If the fuel in the gas can is older than 30 days get rid of it. If after changing the fuel out completely doesn't fix your problem, feel free to contact me and I'll see if I can help you out.
50:1 is the fuel to oil ratio. Never use petroleum oil (engine or boat motor oil). Always use a synthetic saw oil available from home centers, hardware stores and saw dealers. The bottles are usually graduated to various ratios for a gallon of fresh gas. Always premix in it's own container and shake the container thoroughly each time just before filling the tank to prevent oil starvation. Be sure to use bar/chain oil for the chain as well, and keep the chain sharp and well adjusted. Hope this helps!
Usually, yes. Take the saw to a service dealer who can fit a longer bar and proper length chain. You will need to keep the chain properly sharpened and adjusted to prevent extra load on the engine. Hope this helps!
Remove the bar and chain. Does the motor run and not quit? If not, inspect the motor for sawdust plugging the vents and check the brushes for condition and length. If runs ok, check the side port for oil coming out. If ok, clean all of the holes in the drive end of the bar including the two small holes that pass oil to the chain slot. Use compressed air if available. Also, clean the chain slot all around. Oil the sprocket tip if the bar has one. Adjust the chain so that it moves freely, but doesn't droop from the bar.