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OT: Chainsaw stopped working

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Paul Schultz

02-19-2006 19:48:42




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Sorry for the OT post. I just didn't feel like finding a forum on the net, registering, etc.....

I've been clearing some land over the last two years. I bought a Sears 18" chainsaw. Today, I went out and it started right up but the chain wouldn't spin. If I loosened it up a bit it spins. But, it made a rattle type noise.

I believe I have figured it out. But, since this is my first chainsaw I need others with more experience to give me their opinions.

I found that the sprocket at the tip of the chain bar was stuck. (I'm sure that while I've tried not to touch this to the ground I probably did.)

The engine runs great. The drive sprocket spins freely. So, does this sound like I need a new bar?

BTW, I've always run with chain/bar oil.

Thanks,

Paul.

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Paul Schultz

02-20-2006 16:54:11




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
A big thanks to everyone for their input. I have a new bar on its way (Oregon, purchased on ebay - new and cheap). I'll also try soaking the current bar to see if I can free up the sprocket.

Paul.



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Coldiron

02-20-2006 07:39:07




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
Paul, If your sprocket at the tip is frozen it is more than likely your problem. Take a good penetrating oil and soak it down real good until you can turn it very easy. If you dont have a needle grease gun you want to pick one up and keep the tip greased good. the bearings are tiny and if they arent kept lubricated the bar will have to be replaced or the tip at least. Hope this helps.



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van robinson

02-20-2006 00:41:38




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
The chain oil is basically motor oil with an additive to make it tacky. This helps the chain carry the oil to the rest of the bar and the nose sprocket.If you run straight motor oil, it may not be tacky enough for the chain to carry it over the lengh of the bar resulting in premature bar and chain wear and/or failure. I have run both types of bars on my 2 huskys, the roller tip and solid tip bars. For using around the farm and such, the solid tip bars will work fine. That will eliminate the sprocket problem.
Just my $.02.

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Colin King

02-19-2006 20:53:34




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
Dear Paul,

These sprockets have bearings in them that take quite a beating. They get water and dirt in them, they get hot, and they get very little oil. It sounds very possible that you gave it a good run and that it's time to replace it.

However, sometimes if sprockets or chains do get water/
snow in them, they will temporarily sieze up. Try putting some bar oil or WD40 in there. Then take a screw driver and hammer and tap on the base of a sprocket tooth. It can take a fair amount of force, so don't worry about being too rough. See if that will free it and make the sprocket spin smoothly.

Just to check, are you using bar oil, or motor oil? Motor oil, at the very least, does not run through your oiler as well and wears your bar/chain faster, and at the worst will ruin your oiler.

Good luck!

Colin

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Alaska Jon

02-19-2006 20:31:49




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
Check your safety bar in front of the handle. It may be set in the "safety" position, where the chain won"t turn even though the engine runs. Don"t ask me how I know this. -Jon



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Paul Schultz

02-19-2006 20:47:16




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 Re: OT: Chainsaw stopped working in reply to Alaska Jon, 02-19-2006 20:31:49  
Jon,

I did think of the safety bar. It wasn't tripped. Thanks for the reply.

Paul.



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Ross

02-19-2006 20:04:00




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 19:48:42  
Does the tip have a spot for greasing the sprocket? It will be a small hole up around the rivets on the sprocket near the end of the bar. I know Stihl has gotten away from it, but my older stihls have it as well as my newer mccullough. If it does have a spot for greasing it takes a special adapter called a "Needle adapter(?)" It fits in the end of your grease gun. I would grease it first but you may be better off with a new bar. They're not too expensive. I'd think if you touched the ground in such away as to make the sprocket freeze up you certainly have noticed it.
Ross

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Paul Schultz

02-19-2006 20:52:32




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 Re: OT: Chainsaw stopped working in reply to Ross, 02-19-2006 20:04:00  
Ross,

I didn't notice any hole that might be used for greasing the sprocket.

Near the tip near the rivet there is a blue discolored area on the bar. I'm wondering if this heated up and helped the sprocket freeze up. I tried to place some oil at the sprocket. It helped me move the sprocket but not very easily.

I've purchased a new bar on ebay.

Also, anyone know what is the weight of bar oil? I couldn't find it today at the store so I bought some 20W50 motor oil. Seems the bar oil is more viscous. Any harm using the 20W50?

Paul.

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Ross

02-19-2006 21:06:24




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 20:52:32  
The bar oil I have is 30 weight. I've heard it said not to use motor oil because it's not as "tacky" I just buy a bottle of the cheap stuff at walmart. Around here it's 3.86 a gallon so it's cheaper than motor oil.
I hope this link works half way down it shows a special tool for greasing your nose tip sprocket. I'd really be inclined to believe your saw has one, but like I said earlier it very well may have been eliminated.
I'd also say the blue spot on your bar is likely from it overheating. You may be able to save the bar using Old's idea but I'd be afraid you'll ruin the chain.
Ross

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old

02-19-2006 20:57:35




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 20:52:32  
Most bar oil is a 30W nondetergent oil. Almost sounds like your oiler isn't work as it should be, the sprocket gets its oil from the chain oiler on most saws. As far as the old bar you might soak it in tranny fluid for a couple days and see if the sprocket loosens up.



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Paul Schultz

02-19-2006 21:17:38




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 Re: OT: Chainsaw stopped working in reply to old, 02-19-2006 20:57:35  
Good idea Old. I'm buying a new bar but will see if I can salvage the old one.

I don't intend on continuing to use the 20W50 oil. I just was frustrated and wanted to get out of the store and out to the land today. I'll buy some bar oil this week.

Thanks,

Paul.



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Ed in ON

02-19-2006 22:20:35




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 Re: OT: Chainsaw stopped working in reply to Paul Schultz, 02-19-2006 21:17:38  
Around here they sell two "grades" of chain oil. A thinner one for Winter, and a thicker one for Summer. Don't know what SAE they would be, though.

The "bluing" of the bar sounds definitely like a heat effect -- and if it's near the tip, it is probably because you aren't getting enough chain oil dispensed to keep things slippery.



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guest

02-20-2006 04:29:35




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 Re: OT: Chainsaw stopped working in reply to Ed in ON, 02-19-2006 22:20:35  
A new Oregon 18" bar and
chain is about $33.
If you hit the dirt you need the chain
sharpened anyway.
Make sure you use "bar chain lube" only
and Never even come close to the ground.
Some pros wash the bark before using their
expensive chainsaw on it in order not to
hit any dirt.
If the motor starts and runs well that is
good as it is the usual reason why you
find chainsaws at garage sales.
Make sure the oil level needs to be refilled
on every tank.
And make sure you mix the right amount of
2 cyl oil in the GAS
George

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maplehillfrm,pat

02-20-2006 06:51:08




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 Re: OT: Chainsaw stopped working in reply to guest, 02-20-2006 04:29:35  
The point about making sure the oil runs out when the gas does, I was cutting in my wood lot on friday, and ran out of gas, put it in, went to put in oil and was only half empty,, something plugged, I guess, I just grabbed my other saw and went to it but that will ruin a chain and bar fast, pat

this happened once before, I took the bar off and ran it with out the bar and it seemed to work itself out, have oil coming out ok, it worked good for a long time, what do you think I have a piece of a wood chip in there maybe??

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Colin King

02-20-2006 07:58:54




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 Re: OT: Chainsaw stopped working in reply to maplehillfrm,pat, 02-20-2006 06:51:08  
Sounds like your onto something there with the wood chip. I'd recommend taking off the clutch/sprocket cover, and clean everything very thoroughly with a whisk hand broom and a cloth. The oiler outlet should be a small little pin-head sized hole, usually recessed into the aluminum casting of the oil tank. Sometimes there's a thin metal plate that provides further protection. Check to make sure the outlet is not plugged up.

I've never had a saw that ran exactly one tank of gas per one tank of oil. Depending on the ambient air temp, I'll be much closer to 2/3 or 3/4 tank of oil for a tank of gas. I cut 6-10 cords of wood a year for my folks, and in 15 years I've only used 2 bars. I prefer either Sandvik or Oregon bars. They can take a beating.

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