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Chainsaw questions

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Randy

11-01-2002 06:33:27




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I own a Stihl 028 chainsaw thats done a good job for me for many years. Lately it doesn't want to stay running. I have to keep the rpm's up all the time and spend more time restarting it then sawing. What should I be looking for to fix this problem? Also can I use straight 30W oil for bar oil?
And can someone explain how to take the knots out of a chain? I put more in when I try to take some out. There has to be a trick to it. When I finally get them out after a long time I have no idea what I did to do it. Last question is has anyone had experience with carbide tip chains? I know they must cost more and cost more to sharpen. Are they worth it? How much longer do they stay sharp? Thanks

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Slofr8

11-02-2002 20:51:54




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
An air leak will make the saw race and this dosn't sound like your problem. I would do what F14 said and make sure the air filter is clean (a dirty one will act like the choke is on). Next, I would suspect carb adjustment but you'll likely find that a carb. kit and new fuel filter will fix the problem.



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stihltech

11-02-2002 16:10:48




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
Check fuel and pulse hose first. I replace these on 8 out of 10 028's i service every year. Crank seals are a distant 3rd. Carb if been sitting with fuel in it. Sounds like an air leak, I bet on the hoses.



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Use Stihl Bar Oil

11-01-2002 21:59:02




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
The Stihl bar/chain oil is much better than any motor oil, as it is very sticky and clings to the bar and chain. Motor oil will let the chain overheat, ruining it.



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Dennis Benson

11-01-2002 19:02:42




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
When people would bring in a bag of chain for me to sharpen I would simply remove them from the bag, and after flipping them a few times they would unknot. As for running, there are many places that can be leaking, as previously stated. since everything from the bottomside of the piston to the air filter is the fuel system, then getting a leak changes your air fuel ratio. The threads in the carburetor for the mixture screws can be worn making it difficult to make or keep an adjustment. The crankshaft seals can be leaking, too, or a fuel line can be letting in some air. Try sealing some suspected areas with a silicon spray, it will clean off later for making repairs. Sort of like looking for an air leak on a tire with detergent, only this will be a vacuum leak inward.

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Charlie G

11-01-2002 17:53:56




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
Thanks for the laugh on the knots! they are a problem. Keeping the chain sharp is a big safety item,so I stick with ones I can file myself. Don't use motor oil, You'll find yourself burning up bars and chains if you do a lot of cutting.Just my opinion.



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mwfarm

11-01-2002 17:46:24




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
We had that problem. Forgot the technical term, but the tube that the gas/air mixture travels through to enter the cylinder was starting to rot a little and get brittle. it is not metal. Take it to a dealer, and they will service it. Cost us about $75 after replacing spark plug.



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murn

11-01-2002 17:14:31




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
Forgot to mention that when I sold chain and people brough in a chain all in a wad.I would not pick it up in front of me.I soon learned to lay it on a flat table and move it around and in a second you can see which way to go.Good luck.



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BillWV

11-01-2002 17:00:35




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
Your comments about the chain knots made me laugh; I have had the same experience. Everytime I have a "AHA!" moment, it is quickly followed by a "Huh?" when another kink develops before my eyes. Reminds me of a Rubik's cube. I just fiddle with it until, just before giving up, they all straighten out. Sorry not any help.
Bill



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murn

11-01-2002 16:42:13




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
The idle problem is probeley adj of the carb or leak in intake hose! #2 30wt oil is fine,but won't stay on as long,costs as much as a good bar oil and will use more! #3 carbide chain will last 5 times longer but costs 5 times more,I have been told.This would be worth it because of maintence,but you cannot file this chain.It has to be profesional ground.Buy a hard wood chain or sometimes called flattop.Oregon or sthil are best.Make sure you have the correct gauge and pitch ,they are not much more.

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ScottL

11-01-2002 15:29:33




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
I'm not much help on the engine side of things; I usually have mine serviced at the dealer.

Bar oil is cheaper than 30w but I don't see any problems with it.

Stihl chain has 3 versions denoted by one colored link on the chain.
Green is homeowner anti kickback chain
yellow is logging type chisel point chain (cuts way faster)
Red is a carbide tipped version of yellow.

A friend recently sang the praises of Red chain. I'm gonna give it a shot next time I buy.

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F14 - what the other fella said!

11-01-2002 10:46:01




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
On the no-idle problem, also check to see that the air cleaner element is clean and check yer mixture screws, the low speed mixure or idle screw may need to be adjusted.



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redtractorman

11-01-2002 08:24:00




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 Re: chainsaw questions in reply to Randy, 11-01-2002 06:33:27  
I have one of these chainsaws and they are great.A few things to check are the bolts holding the carb to the block and sure they are tight.Check and clean little screen in the muffler.Check head bolts for tightness.Dirt in the gas tank and a dirty carb.I have used striaght 30 weight at times with no problems,the chain oil is stickier and stays on chain longer and the price is usually cheaper then motor oil.Getting the knots out is just as you said,you fiddle with it until they are out and then your not sure what you did.have no experience with carbide chains but would cation that carbide is very brittle,if you hit wire or a stone it would probably destroy the chain.

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