Stihl MS 261 Performance Tuning Kit.

[HolmenTree]

aSmith, welcome to FF, I believe these kits are no longer available on that special price (been a few years ago) but the Logosol 16" bar is still in inventory.

I ran the 16" Logosol Stihl sells plus a 7 TPicco spur sprocket drum Stihl also sells for the 066/660.
I was milling cants with to my 090 on a 36" Alaskan.
Then when it was time to mill lumber off the cants I mounted the 066 with 16" Picco bar/chain in the Alaskan mill.
When I had a hired man he would run the 066/16" on a homemade mill set at 1 1/2" while I kept milling cants with the 090. We cut over a thousand bf one day milling 2"×6"×16' spruce.

I tried the Picco chain on the 36" 090 mill but in time the chain kinked up too bad with all the chain stretching.

[ButchC]

The 63PS is indeed great chain however has been NLA at Stihl for at least a couple years. The green tag version is much slower in my experience about on par with N1C Carton and 91 Oregon. Luckily  I have a lifetime supply  of 63PS since I dont use that much of it   Baileys does  list it on the web site in both loops and reels.

[HolmenTree]

Stihl 63PS chisel is still available from dealers here in Canada last time I looked.

[snonut12]

Been considering to switch over to 3/8 low profile (3/8 picco) on my 261C-M to pair up with my 241C-M which is a fantastic limbing saw. I see this tuning kit (as mentioned by the OP) is for 16" bar and chain. I already am running 16" on my 241 for better reach when limbing. I currently am running 18" .325 on my 261 and would like to keep the length the same. Looking though the bar and chain catalog I found 3/8 picco 18" bar under the model 250, part number 3005 000 4817 

Anyway, can I run this 18" picco bar on my 261 and if so, what is the sprocket part number? And how many links 3/8 picco chains would it need for a proper fit? The catalog says the 16" bar on 261 requires 60 links. 

[Tacotodd]

It's not going to fit. That saw takes a 3003 mount. Keep on going. If you wanted Oregon part numbers I could help, but Stihl is more proprietary than I can look up.

[lxskllr]

Not apples-apples, but I had interest in converting my 026 to using picco chain; ideally with a 20" bar. It looked like it was gonna be more trouble than it was worth to me, using aftermarket parts, and requiring modification.

[SkeeterKev]

You should be able to use the newer Stihl 23RSPro chain on your 261 (you need a 0.050 / 325 bar).  I have been using it over a year now on a Husky 346 and it has never run better.  I also use a Stihl 241 that runs 63PS with a 7 tooth rim sprocket.  You could fit your 261 up to run 63PS but I think 23RSPro is a better option.  You can run 7 or 8 tooth rims depending on what you are cutting.

[HolmenTree]

You should be able to use the newer Stihl 23RSPro chain on your 261 (you need a 0.050 / 325 bar).  I have been using it over a year now on a Husky 346 and it has never run better.  I also use a Stihl 241 that runs 63PS with a 7 tooth rim sprocket.  You could fit your 261 up to run 63PS but I think 23RSPro is a better option.  You can run 7 or 8 tooth rims depending on what you are cutting.

Yes today in 2021 the 23RS Pro chisel chain is the answer for short bar  50cc saws.
I remember years ago I ran the narrow kerf Oregon 95 .325semi chisel on my 346XP with 16" bar, it was a light sabre.
Unfortunately right up to my recent retirement I haven't found any available 23RS Pro chain