Non OEM stihl sprocket

[Drifter27]

Hello again
I don't know if this is the place for this question or not. I recently picked up a ms661 with a 3/8 sprocket. Anyone know of a way I can use a .325 pitch bar for smaller logs?

[Drifter27]

Forgot to say for milling only

[DelawhereJoe]

They make a .325x9 that will fit your saw but I think you can only get up to a 20" bar in .325. Another thing to think about is the extra drive link in the chain you will probably need for that 9 pin rim sprocket. There is also the option or 3/8 picco and a 16" bar for milling too

[HolmenTree]

Yup .325 9 tooth rims available in standard large  7 spline bore. Not from Stihl though.
Both Oregon and Carlton (Windsor) make a replaceable .325 sprocket nose.


 

 

[Drifter27]

Do I need to replace anything on the powerhead itself to make that work?

[HolmenTree]

Yes you'll need the 9 tooth .325 rim like I said earlier. That's all.
I milled with .325 with my 090 and 066 stihls .Works great  with less waste.

[teakwood]

Isn't that a little bit to much power for the smallish .325 chains? especially in chainsaw milling applications 

[DelawhereJoe]

Teakwood they make a 3/8 picco bar in the 3003 mount HolmenTree said he has milled 1000's of board feet with it, if I recall correctly.  Stihl used to put out a 18" 3003 000 6317 and 20" 3003 000 6321 bar in 3/8 picco but I believe they stopped .

[HolmenTree]

Actually I find Alaskan chainsaw milling is easier on a chain then free cutting felling, limbing and bucking.
As long as the cutters are kept sharp with a regular touchup plus properly jointed and the b/c is getting lots of oil milling is easier on it.

Chain is guided near perfectly straight through the wood milling a surface within 1/32" tolerance or better. Can't get much easier on a chain then that.