Chain suddenly stopped,#345, motor runs. can't turn it by hand

Check to make sure the brake binder is not engaged...which is the same as saying: check and make sure the kickback brake handle is fully cocked. The handle should be oriented rearward towards the forward hand grip. If it is forward, pull it back stongly until it lockes in place. (Hint: also make sure the binder is released/brake cocked always before attempting to remove the brake assembly from the saw drive engine subassembly.)

Check the sprocket to see if it has very deep groves wore into it.The chain might be getting in and out of the worn grove making it get tight.You also might not be getting enough oil to the chain.If the sprockets ok try cleaning the bar grove out with something like a small flat blade screw driver.There are small oil holes near the bar bolt holes.they need to be cleaned out every so offten.Blowing it out with compressed air helps .You should also flip the bar over every 2 to 3 hours of use.So it doesen't get wore bad on one side.Also try running the saw with the bar off to see if oil is coming out ok.If not your screen inside the oil tank might be plugged up.

Chain too tight? Could be the fastener was loose and it tightened while in use. Remove the cover and the chain and bar. Clean it out and see if pulley turns by hand. Check for broken springs and mounts. Did you have enough chain lube?

You need to remove the side cover, then remove the bar and chain. Inspect the sprocket connection to the drive shaft for a broken coupler, spring, or sheared key. Does the shaft turn freely by hand? If so, then the internals of the gearbox have a problem. Good luck!

Is the door stuck in the open position? If so the trolley is probably jammed against the bolt just in front of the motor unit. Loosen the chain enough to free the trolley and then run the opener until the door is closed. While the door is closed locate the 'up limit' on the side of the motor unit and turn this control 2 complete turns in the opposite direction of the arrow printed on the cover. Tighten the chain.

turn both carb adj. screws out 1 1/2 turns from bottom and then fine tune them with it running. the one marked L is for low speed and the one marked H is for high speed. hope this helps

Does the motor continue to run when chain stops? Electric saws usually don't have a clutch, so I would look for badly-worn chain sprocket, or a possible sheared key in the sprocket hub, or a loose mounting nut. Remove the chain and bar, try to turn the sprocket by hand (wear good gloves). There may be some type of overload clutch built into the sprocket.

Turn the Hus 345 chain saw upside down, you may see a little Icon of a oil droplet and a + - arrow by the chain. THe adjustment screw is not pictured in any of the standard user manuals,. but it is a small black slot headed screw over a rectangale metal tab by the chain. I believe if you turn it counter-clockwise, it will give you more oil,, It did for me. If you have the bar off, you can start the saw and see it come out the hole, that would verify your oil pump is working. Make sure the holes on the bar are clean also. running the saw at a fast idle for 1 min should oil the chain well enouth that it starts spraying off the end of the bar when you gun the engine.

Replace the bar. Your bar has gone bad and that is why you are losing power. Bars are made by the chain saws to be completely oiled at all times. When the bar does not get oil the bar will start to warp and that is what will cause you lack of power when trying to due a top cut

Remove the chain, then see if it will turn over by hand. Does it have a chain-brake??? Frankster016