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Post by Deleted on Nov 20, 2017 8:54:55 GMT -5
I am trying to verify the sprocket on my XL-12. According to the number on the chain it’s running.404. I believe I want to go to 3/8 but I need to change the sprocket. It currently has the open sprocket on it and the only number it has on it is 38. I want to make sure I know what sprocket I have and that the chain and sprocket have not been mismatched. I will admit I bought this saw off of eBay and have found numerous things done to it that would signal the previous owner knew nothing about a saw and apparently was hundreds of miles from someone that did. Admittedly I am no expert but I just want to be sure
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Post by undee70ss on Nov 20, 2017 11:24:36 GMT -5
The number 38 on the sprocket should mean it’s for a 3/8 chain. Are you sure you have .404 chain on it?
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Post by undee70ss on Nov 20, 2017 11:25:33 GMT -5
What is the number on the chain?
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Post by jerseyhighlander on Nov 20, 2017 11:53:15 GMT -5
If I understand as much as I think I do, the numbers on the chain don't represent the size/pitch at all. They are the style {low kickback, full chisel/semi chisel, skip tooth, narrow kerf etc}. The pitch is measured from any chain by measuring the distance between any three rivets, center to center or left edge to left edge.., and dividing by 2. A .404 chain would be .808 or the hair of a fair skinned Irish girl, hair under 13/16, where a 3/8 would be 3/4" (usually a few hundredths of an inch under 3/4"). Best to use a caliper to make the measurement.
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Post by Deleted on Nov 20, 2017 11:56:49 GMT -5
What is the number on the chain? The number on the chain is 27 which from what I find is .404. But when I saw the 38 on the sprocket I wondered is that meant 3/8. Like I said I believe the poor saws previous owner was not very familiar with anything remotely related to a chainsaw I can believe the mismatch chain and sprocket if that’s the case |
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Post by Deleted on Nov 20, 2017 12:00:40 GMT -5
Unless I am misreading the number stamped in the chain does identify the chain
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Post by Deleted on Nov 20, 2017 12:00:56 GMT -5
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Post by sweepleader on Nov 20, 2017 12:16:50 GMT -5
Unless I am misreading the number stamped in the chain does identify the chain You are correct about that. The number on the bar may tell what the nose sprocket pitch is and the gauge of the chain, do you have that? |
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Post by jerseyhighlander on Nov 20, 2017 12:26:14 GMT -5
I guess that can work as long as you know it is Oregon chain. If it's a Stihl chain, the number stamped on the drive link is the drive link gauge. All the manufacturers use different systems and no idea if there is cross over. Also, (total speculation here) depending on how old the chain is, it may be a numbering system long abandoned. Where pitch is concerned, a measurement is a measurement, no matter who made it or when. |
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Post by Deleted on Nov 20, 2017 12:27:23 GMT -5
Not with me I will look when I get home tonight. When I took it apart this morning I was kinda thrown by the 38 on the sprocket I wondered if it meant 3/8. I have been looking for a bar and chain and in my area the .404 is hard to find. I was going to switch to 3/8 but if the sprocket is already 3/8 then all I need is bar and chain. I also have a c 72 with 3/8 but it has the rim sprocket. For the bar and chain I want on it I think I will have to go .404 but that sprocket should be easy to find and change out
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Post by Deleted on Nov 20, 2017 12:29:42 GMT -5
I do have the number for the bar on my C-72, it’s 213ATMF014
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Post by jerseyhighlander on Nov 20, 2017 12:38:23 GMT -5
I'm used to the nomenclature on modern bars with the pitch typically expressed as a decimal. the 38 on the bar of the Super XL I just picked up threw me too but that is apparently how they list 3/8".
That number for the c-72, no idea.
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Post by Deleted on Nov 20, 2017 12:41:44 GMT -5
That may well be true about the difference in the way brand chain is marked but in the case of Stihl and Oregon the 27 would signal Oregon as Stihl didn’t go beyond 7 as a number on their drive links. I am not sure of others though
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Post by chainsawlady on Nov 21, 2017 0:37:33 GMT -5
I do have the number for the bar on my C-72, it’s 213ATMF014 Checked my old Oregon Oct. 1995 and found the bar 213ATMF014 listed for the Homelite C series, XJ-1000 etc. and the Zip which was still being sold. Probably fit a lot of older DD Homelites. It is a 21" - .404. uses 71 drives of .404 chain. chainsawlady |
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