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Check kick back lever, it is a plastic flap just before bar on top of saw. This is to stop blade if saw kicks back on you. Will have to push flap forward away from you.
Bob take the chain off again and remember to tighten the tensioning bar so that the chain is slightly loose. Enough to pull a few cm of the bottom just to stop it being tight.
Hi. Possibly the chain brake is engaged. It is the thing just in front of the forward handle. Try pulling it back, before starting the saw. It should click into place. This device is supposed to stop the chain in the event of a severe kick-back. If that's not it, you are probably looking at a new clutch or maybe sprocket.
The cover looks easy, but it is a special fit problem. There is a screw device with a very small pip which fits into the chain bar on the side. When you put the chain and bar on together, you have to adjust this BACK toward the sprocket with a flat screw driver. Now you can fit the bar and chain in with the chain around the sprocket and very loose. Place the cover on after visually seeing a passage for the chain oil from the angled plate - through some slots in the side, though the side hole in the bar, and up through that invisible inside drilled hole between the chain groove and the bar side hole. Move the cover back and forth before tightening. Ensure that the screw pip device is snapped into the bar so that you can move the bar forwards and back using the flat screw driver. Now tighten to less than hand tight. Adjust the bar forward so you can just see three bottom guide teeth in the chain when you pull on the middle of the chain from the bottom of the bar. Now you have the right tension on all those sharp links and you can give the cover bolts a good tightening, not to crack the plastic or metal though. Be sure to clean all the dust out of the band area with a tooth brush as this can lock up the band and not let the chain revolve at all - making it act as if the chain brake is on. Also be aware of the tiny roll/spring pin in there which wants to fly out when cleaning. It controls how the band works when you trip the chain brake.
Sounds like you have had a kick back and the chainbrake has activated, with the engine stopped, grab the front hand guard and pull it fully back to the top handle, until you hear the click of the brake loading.
"Sound" happy? Was it a rattle IN the engine? Or are you just cleaning where the chain and clutch/sprocket and bar are? There's usually 2 nuts that hold that cover on and an adjustment screw for chain tension facing forward. If it's a newer model that has a kick back/brake on it, it might just be that you have to pull the handle back to release the brake. It's a band that goes around the clutch (inside the cover).
On the side of the saw where the bar (what the chain goes around/rides on) where it connects to the saw there are a couple nuts. Loosen them up, push the bar back towards the saw to put slack in the chain, wrap the chair around the bar making sure the bottom of the chain is in the groove on the bar and tip of the bar, then push the bar forwards away from the saw to take out the slack in the chain. Hold it tight and tighten up the two nuts. Depending on your model of pole saw, you may have only one nut and a plastic guide that keeps it straight. Same concept though. Loosen the nut, push bar in, put chain on, pull bar out, tighten nut.
If you've ever done it on a bicycle, it's the same concept. Loosen nuts on back wheel, push tire forwards and chain gets loose. Pull it backwards and chain gets tight.
There are a couple of reason the saw blade will not turn.
- Make sure you have bar and chain oil in saw.
-Make sure oil is running on the saw blade and chain.
-Make sure the clutch is not stuck.
- Make sure the bar sprocket is not frozen.
-The safety kick back guard needs to be re-set.
-Shut off saw. Push and pull guard.
Please let me know what you find.
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