Sawmill and Timber

Chainsaws and light support equipment => Chain Saws => Topic started by: A.O. on September 27, 2019, 06:46:49 AM

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Title: Chain saw question..
Post by: A.O. on September 27, 2019, 06:46:49 AM
So on my MS362 Stihl.. I cut up a bunch of big logs a couple weeks ago, saw worked great. Then the last couple cuts were labored and I just figured the chain was getting dull, even got some smoking out of it. (the chain not the saw itself). Took it back to the shop and sharpened it.. no change, labored to cut and a smoking bar AND it was cutting in an arc. Dressed the bar so the rails were even, cleaned everything up, made sure the oiler was working. Put it back together and same thing, seems to cut crooked, smokes , and labors to cut!!

IDEAS???
Title: Re: Chain saw question..
Post by: Crusarius on September 27, 2019, 07:08:00 AM
Did you hand file? I did that and seemed I got one side sharper than the other. I put a new chain on and it was fine after that.
Title: Re: Chain saw question..
Post by: A.O. on September 27, 2019, 07:14:02 AM
I did hand file, I always have with good results. I may try a new chain and see how it does..

The heat and smoking has thrown me off a bit.
Title: Re: Chain saw question..
Post by: A.O. on September 27, 2019, 10:08:38 AM
Maybe I'm the Spaceman!  Maybe I just thought I resharpened the chain, memory is not as good as it once was although I am SURE I resharpened that chain! However.. I just resharpened that chain and it seems to work fine now. Granted I just cut some 8" diameter pine to test it and it seemed to work fine, we'll see how it does when I cut something a bit bigger.
Title: Re: Chain saw question..
Post by: Kirk Allen on September 27, 2019, 10:18:09 AM
Curved cuts are typically a chain sharper on one side than the other.  As far as smoking, do you lube the bar sprocket?   I have seen a few sprockets fail from never getting any lube.  Most chain saw shops will have the device that pushes grease into the sprocket. 

https://www.northerntool.com/shop/tools/product_200675095_200675095?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Logging%20%3E%20Chainsaw%20Accessories%20%2B%20Maintenance&utm_campaign=Oregon&utm_content=55615&gclid=EAIaIQobChMInf3Slqbx5AIVE26GCh1ixwnLEAQYAiABEgLmSvD_BwE (https://www.northerntool.com/shop/tools/product_200675095_200675095?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Logging%20%3E%20Chainsaw%20Accessories%20%2B%20Maintenance&utm_campaign=Oregon&utm_content=55615&gclid=EAIaIQobChMInf3Slqbx5AIVE26GCh1ixwnLEAQYAiABEgLmSvD_BwE)

I just last week had the same curve issue and I was perplexed because I sharpen on an electrical saw chain sharpener.  Turns out, I forgot to move the power switch to the other position so one side got sharpened with the file starting on the outside working in (proper) and the other side was inside working out (wrong). 

I resharpened correctly and it now cuts straight as can be. 
Title: Re: Chain saw question..
Post by: A.O. on September 27, 2019, 11:12:59 AM
Curved cuts are typically a chain sharper on one side than the other.  As far as smoking, do you lube the bar sprocket?   I have seen a few sprockets fail from never getting any lube.  Most chain saw shops will have the device that pushes grease into the sprocket. 

https://www.northerntool.com/shop/tools/product_200675095_200675095?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Logging%20%3E%20Chainsaw%20Accessories%20%2B%20Maintenance&utm_campaign=Oregon&utm_content=55615&gclid=EAIaIQobChMInf3Slqbx5AIVE26GCh1ixwnLEAQYAiABEgLmSvD_BwE (https://www.northerntool.com/shop/tools/product_200675095_200675095?cm_mmc=Google-pla&utm_source=Google_PLA&utm_medium=Logging%20%3E%20Chainsaw%20Accessories%20%2B%20Maintenance&utm_campaign=Oregon&utm_content=55615&gclid=EAIaIQobChMInf3Slqbx5AIVE26GCh1ixwnLEAQYAiABEgLmSvD_BwE)

I just last week had the same curve issue and I was perplexed because I sharpen on an electrical saw chain sharpener.  Turns out, I forgot to move the power switch to the other position so one side got sharpened with the file starting on the outside working in (proper) and the other side was inside working out (wrong). 

I resharpened correctly and it now cuts straight as can be.

I do have one of those little grease guns for bar sprockets, but not all bars have the little hole for greasing anymore. Seems the newer ones (last 10-15years) do not have the hole in them. I normally use compressed air to spin that sprocket when I clean or flip the bar, since they removed the hole I don't normally lube that sprocket anymore. Also it didn't seem that the sprocket it self was smoking, just along the length of the bar.
Title: Re: Chain saw question..
Post by: furu on October 06, 2019, 03:36:55 PM
Check that your oil level is going down as you cut.  There may be another problem preventing adequate oil getting to the bar.  Is the bar getting warm when it smokes?
Title: Re: Chain saw question..
Post by: A.O. on October 08, 2019, 08:42:26 AM
Yes the oil is going down, and if I point that bar at a clean piece of wood or something and gas it , it definitely sprays oil in it.

I'm sure the bar is warm or it wouldn't smoke.. no, I haven't touched it to find out..
Title: Re: Chain saw question..
Post by: Ox on October 08, 2019, 03:00:06 PM
If the smoking chain was right after a crooked cut, this explains itself.  It was binding, causing excess friction, causing the smoking. 

Or is it smoking while in midair with chain spinning high speed?