FarmerTec Huztl MS660 Updated Build Kit - Build Thread

[TheBigGiantPowerHead]

Thanks for the responses and the pics. Nice to see an up close of the chain brake assembly.

 

[X 66 Stang347 X]

Don’t forget to put these 2 bushing on before the handle or you’ll have to pull it back off to install.
I’ve got 2 saws going together so if you need a pic of something let me know.

 

[67L36Driver]

It is possible to install that bumper stop without removing the handle/tank.

It involves shortening a socket (not torx) screw and cutting a tiny slot in the end of it (the screw). Cutting a hex (Allen) wrench very short and using a tiny screwdriver.

Overlooked that bumper on my 038 build.

 

[X 66 Stang347 X]

I’m sure some buffers never get installed.
I usually take the baffle out and gasket match the muffler to the port like the old 066’s

 

[dswensen]

I'm running two BB jugs on my mill saws. They both have almost an entire 36" chain sharpened through them. Haven't had one single issue with either (besides recoil assemblies blowing up about a year ago). Like stated above, you "need" to use the base gasket to minimize the Freeport. With the gaskets installed, I can just make out the bottom of the skirt at top dead center. As far as the parts that have "issues" and "maybe should" be replaced, that is up to you. As you read through the thread, you will see A LOT OF INFO. There really isn't any "right or wrong", except to say that the decomp needs to be replaced with a plug, OEM or Husky, the chain adjuster "needs" to be shimmed no matter wether you use the kit screw or OEM, I "feel" you NEED OEM bar studs, kit carb either works fine or doesn't tune (replace with Walbro if it is a problem). Other than that, the rest is up to you. I run Caber rings, OEM decomp, OEM chain adjuster shimmed, OEM bar studs, Walbro wj76 carb on one and kit carb on another, basic woods port, 1184 on the sealing surfaces, rip out the seals and install new after the cases are pressed together and have 4 recoil assemblies on hand, but haven't blown one in 8 months and run the HO oil pump on both.

Please remind me again on the shim for the tensioner shaft? I seem to recall it's just a piece of brass tubing of the correct ID/OD and cut to (short) length - is that right??? That's what the pictures above seemed to show too.

 

[William Prophett]

Please remind me again on the shim for the tensioner shaft? I seem to recall it's just a piece of brass tubing of the correct ID/OD and cut to (short) length - is that right??? That's what the pictures above seemed to show too.

Yup.... Just get the right ID and the thickness of the tube shouldn't be an issue. I got some right at my local hardware store...

 

[rich450es]

this is a link to it on ebay
https://www.ebay.com/itm/K-S-014X3-...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

 

[X 66 Stang347 X]

Most hardware stores have them

 

[67L36Driver]

this is a link to it on ebay
https://www.ebay.com/itm/K-S-014X3-...e=STRK:MEBIDX:IT&_trksid=p2060353.m2749.l2649

Also useful to butt splice fuel line. [emoji106]

 

[rich450es]

So I just built one of the 660 kit and it runs fantastic ! I received all the parts which looked good also (I had to do some file work on the cylinder intake port due to some flash ) and were packaged nicely. I did install some stock stihl parts (normal things like piston clips, wrist pin bearing, gaskets and seals, ngk plug) and AM parts like the HD oiler from Ireland and the Tillotson HS-320a carburetor . I also grabbed a 3/4 wrap from farmer Tec. I have run about 4 tanks of 42:1 92 octane fuel threw it without a hic-up with a 25in stihl bar. but after reading all 106 pages in this thread (that only took me 4 days to get threw in my free time thanks all LOL)I'm wondering if I should order up stock impulse , fuel line and intake boot ? I love building this kit so much I sold my 026 to finance building the 361 kit (the 026 was given to me by a friend 10 years ago and was getting tired). what say you guys ? …… thank you for reading this !!!

 

[William Prophett]

So I just built one of the 660 kit and it runs fantastic ! I received all the parts which looked good also (I had to do some file work on the cylinder intake port due to some flash ) and were packaged nicely. I did install some stock stihl parts (normal things like piston clips, wrist pin bearing, gaskets and seals, ngk plug) and AM parts like the HD oiler from Ireland and the Tillotson HS-320a carburetor . I also grabbed a 3/4 wrap from farmer Tec. I have run about 4 tanks of 42:1 92 octane fuel threw it without a hic-up with a 25in stihl bar. but after reading all 106 pages in this thread (that only took me 4 days to get threw in my free time thanks all LOL)I'm wondering if I should order up stock impulse , fuel line and intake boot ? I love building this kit so much I sold my 026 to finance building the 361 kit (the 026 was given to me by a friend 10 years ago and was getting tired). what say you guys ? …… thank you for reading this !!!

Congrats Rich. Funny you ask, because I have been thinking that I'll do exactly what you asked as part of a "every winter" service. Seems like the least I can do and keep them fresh for the spring. I'm not a big fan of "unsealing" well sealed ****, but what the hell. Mine are running so well, that I'm not screwing with anything for now, but it seemed like a solid winter plan.

 

[X 66 Stang347 X]

Good job Sounds like you have a solid kit.
A few have replaced all the rubber which may not be a bad idea for the long term. We know how Chinese rubber cracks over time.
But you’ll notice something going on. It won’t hold a tune for one.

The only rubber part I replaced from the get go is the piece of fuel line to the carb from the elbow. I used some Stihl bulk line.

 

[rich450es]

Well thanks ! I will say that adding that new carb to the saw made it wake up quite a lot ! good $40 spent there

 

[TheBigGiantPowerHead]

Don’t forget to put these 2 bushing on before the handle or you’ll have to pull it back off to install.
I’ve got 2 saws going together so if you need a pic of something let me know.

Your post brought to my attention that this bushing with the plate was not included in my kit. Guess I'll be happy if this was all that was excluded. Not a big deal, I'm waiting on a Stihl wrist pin bearing anyway.

 

[ammoaddict]

Well thanks ! I will say that adding that new carb to the saw made it wake up quite a lot ! good $40 spent there

Would you mind sharing where you found that carb for $40. I can't seem to find one that cheap.

Sent from my Moto G (4) using Tapatalk

 

[rich450es]

I can't access my eBay account at work. Maybe it was $45 ? I bought it 3-4 weeks ago so I may be off on the price by memory. Well worth the money IMHO

 

[Canyon Angler]

Would you mind sharing where you found that carb for $40. I can't seem to find one that cheap.

Here's one for $50:

https://mittysupply.com/product/hs-320a-tillotson-carburetor-for-stihl-066-ms660/

and one for $52 delivered:

https://www.ebay.com/p/STIHL-066-Ms650-Ms660-OEM-Tillotson-Carburetor-Hs-320a/695483524

 

[X 66 Stang347 X]

With the Huztl springs my clutch would slip pretty easy when pulling a 36” bar.
So now I’ll go ahead and put oem springs on from the get go.
In the old 660 thread I checked the tension on both and the huztl spring was way stiffer. I think spec is the the clutch starts to engage around 3,200-3,300 rpms iirc.
I think bedford changes out the springs also maybe he’ll chime in.
Oem is on the right.

 

[Bedford T]

Yep springs are changed to oem. I don't let it idle long engaged, bad for springs.

 

[Bedford T]

If you can ....order from Mitty. So you might pay 5$ deliver more. She is a hardworking business woman that looks after us.

Here's one for $50:

https://mittysupply.com/product/hs-320a-tillotson-carburetor-for-stihl-066-ms660/

and one for $52 delivered:

https://www.ebay.com/p/STIHL-066-Ms650-Ms660-OEM-Tillotson-Carburetor-Hs-320a/695483524