Complete Aftermarket Repair Parts for STIHL MS660 066 Chainsaw Engine Motor Crankcase Crankshaft Carburetor Fuel Tank Cylinder Piston Ignition Coil

Complete Aftermarket Repair Parts for STIHL MS660 066 Chainsaw Engine Motor Crankcase Crankshaft Carburetor Fuel Tank Cylinder Piston Ignition Coil Item NO: CS66020A

US$ 148.80
US$ 186.00 Save US$ 37.20 (20% Off)
  • Aftermarket complete repair parts for Stihl ms660 066 chainsaw
Product Name Complete Aftermarket Repair Parts for STIHL MS660 066 Chainsaw Engine Motor Crankcase Crankshaft Carburetor Fuel Tank Cylinder Piston Ignition Coil
Item NO CS66020A
Weight 9.5000 kg = 20.9439 lb = 335.1026 oz
Category Saw Repair Kits > ST 066 MS660 Parts (Complete Saw Repair Kits)
Brand Farmertec
Creation time 2016-12-16


Parts name: aftermarket complete saw repair kits as shown in the picture.

Fits: Stihl ms660 066 chainsaw 

It includes everything you need to repair a ms660 066 chainsaw

These parts are just aftermarket parts for repairing chainsaws, we don't recommend it for other purpose 

Wrap around handle bar with elbow and screws for Stihl ms650 ms660 066 065 chainsaw is available, click the link below to get one: 



Colton G

kit was missing carb bolts but other than that was complete and fun to build. used matt o's bolt for bolt youtube videos. runs and cuts great


Jim W

I finished putting this saw together recently and really enjoyed the challenge. I had two piston cir clips missing and the plastic cylinder shroud had a small fracture where one of the brass grommets were pressed through. I think most of the parts are good and they have inherited much of the OEMs original quality. One exception is the chain tensioner it needs to be shimmed to keep it aligned. The cylinder was clean without burrs. LOTs of compression.
Service:Thanks for your feedback. If there are some items you can not use,we may make a partial refund for you. Thanks.


Brett Besser

You will have to ajust kill switch by bending it to shut the saw off. The chain adjustment is useless made of alloy most likely aluminum does not work at all you will have to switch to the Stihl OEM part. I recommend using OEM on throttle control weak and raddles around along with kill switch. The clutch drum is a little tight but you can get it to work. Other then this few issues a fantastic saw and an outstanding value


COPE Small Engine

We purchase these saws to build and resale. Saw went together really easy. A few things to note: there will be parts missing. Only reason I say this is because we have watched plenty of youtube vids and just about all have said they have had at least a couple things missing. Really it is small things. Mine had the carburetor flange nuts missing and also had the wrong bar studs. The seals come already installed in the case halves. Makes it difficult to install the crank without reversing the seal.
With that being said, just order a seal kit, they are really inexpensive. As well as the flange nuts for the carburetor. other than that, the saw fired right up and seems really strong. Will buy more.


J negrin

First time building a saw. It went together easily. Chack YouTube for bolt by bolt videos. Saw stars easily and oils well.


Joe Negrin

First time building a saw. Saw went together smoothly. Check out YouTube for bolt by bolt videos. Saw started easily and I have been pleased with it.


doug smith

these saw were a great project. learned a lot about how saw works. tuning was a chore, but end results are amazing.


Doug Smith

ordering was simple and straight forward. shipping was alittle expensive but cost savings were emense. order arrived in 4 days, amazing. thanks.
will update after building saw (066)



Die Bestellung kam relativ schnell an. Etwa 3 Wochen.
Ich war über die gute Qualität der Teile sehr überrascht. Der Zusammenbau ging auch flott. Danach sprang die Säge gut an und hat ihre ersten 6m² hinter sich. Alles scheint in bester Ordnung zu sein. Sie hat ein beachtliches Gewicht, aber das dürfte jedem bewusst sein.


Charlie Booth

I bought this kit after being pleased with the built 070 power head from Huztl. My 20 year old 044 and ms290 had recently crapped out, and my local saw guy replaced carbs, plugs, coil on one, and hoses. Still no run. So I thought what a better way to solve the mystery of 2 cycle engines than to build one ground up, with help from YouTube and French website with break away parts diagrams. Glad I did! Started right up! Don't forget the heat shield....get something. That heat on the exhaust side will freeze up piston rings on that side. Even with a heat shield after 20 years you will see damage. Only problem is choke would stick, so I reducesd the edges til it didn't. I have used this several tanks of fuel and only problem is it won't throttle down. So I ordered new carb for 10.00 and will check that for dot and change out with one from kit, I think throttle butterfly is sticking too, maybe linkage. Doesn't matter I will see when I install new checked out carb, and pay special attention to linkage and idle return oh yeah, super glue or blue locktite cap on decompression valve...


Lori & Bill Boggs

I received my kit within 9 days. I inspected kit and was only missing taps and bolts. The cylinder was rough on the inside where piston goes. It looked like it was honed out some but still rough. It went together easily. The seals were already installed. I had to destroy them and put new ones in. The chain adjuster was replaced with an oem stilhl one. Compression and power are excellent. I exchanged the 7 tooth sprocket for an 8.
I have used Stihl saws since the introduction of 045 and continued to upgrade to the ms661. The new ms661 is computerized and can Not develop the power that the older 660 developed. I am going to sale both ms661 and buy more kit saws.Thank you for making these kit saws it sure does bring back memories of what a chainsaw should be. I am a professional logger more than 40 years in West Virginia.



Great saw!!


Huztl MS660

This saw is super fun to put together. Even more fun to run!! All my parts went together very well, except the bar adjuster. That’s a known issue. If you plan ahead it shouldn’t be a problem.
This saw has more power than most will ever need. After running it hard for roughly 7-8 tanks I can say it has held up well and exceeds my expectations. Anyone who says these saws are junk is just ignorant. Run one yourself and you’ll be impressed!



Have built 5 of the 066 kits for myself and others and i'll tell you I am impressed.
The quality is good and they run well.
Had some minor issues with a couple of kits (leaky gas cap ,missing screws) but all in all everyone is happy with them.
I will probably do an 044 kit next.


Jeffrey Mennes

I have built two of these ms660 saws. I was very impressed with them both. They run and cut just as good as the stihl oem models. Not to mention, building them are really fun. If anyone is looking for a bigger saw to cut with, i would highly recommend trying this before you spend 1250$ on the oem model. For that price, you can buy four of the farmertec/huztl saws.
I give this saw a five star rating. But there are a few parts i would suggest buying oem.
-Chain tensioner
-Decompression valve
-Gas cap
Other than that, everything i have not had any problems with.
Also, when you build this saw, i highly recommend you use a bearing press with some sockets to install your crank and casing in place. It works much better than heating and using a hammer. Your crank will be straight, and move freely.



Заказывал комплект для сборки мс 660. на польский адрес. Посылка дошла очень быстро за 2 недели. Упаковано очень аккуратно.Огромное спасибо продавцу. Качество меня полностью устраивает.Обязательно буду покупать ещё.


Claude Rowe

love the saw kit. easy to assemble lots of power. it is a beast! runs my 36 inch bar with a full skip chain with ease.



This is the 5th saw kit that I have assembled from Huztl, I purchased this kit back in February and opened it upon arrival for inspection, I failed too notice there was an actuating lever for the chain break missing so I had to purchase this at a later date due to the fact that I waited 6 months to assemble this saw kit. There were also 2 lower muffler mounting taps missing but I was able to find 2 socket cap taps to replace the missing ones from my extras. This kit went together with little problems and was running with like 9 pulls of the cord. The 1 issue I did have is both the choke and throttle butterfly blades were sticking inside the carburetor venturi, this issue was corrected by just loosening the little tap that holds them on the shaft then opening and closing them then retightening the tap.
This kit is of high quality with all parts fitting as they should. The cylinder casting was very good with great coating on the cylinder wall. The ports were square and symmetrical and were where they were supposed to be located.
All in All if you have the mechanical abilities you can not go wrong with this kit and at less than $300 including shipping and a 25" bar and chain its still about 1/3 the coast of its real counter part and in the end it is a saw that you built from a box of parts and that's a lot of self satisfaction.



Ordered 660 and Hulzforma bar & chains. Took about a week arrive. It assembled with, started the first time within 4 pulls, and runs great after only minor tuning. Quality was great and I can't wait to start milling with it.



First time of buying such a kit.
To be onest this kit is good for its value,if you know what you are doing and if you know what you need to replace it with OEM then you can make very good chainsaw build that will last long..
By my impression the thing that needs to be replaced with oem are:
Crank seals,pistong rings and clips,chain tensioner,compresion valve,chain sprocket..look like a lot but it is not..
  • 7M
    FarmerTec G660 Stihl RS new chain LS+ 30ml 50cm ES Light bar stejar semiuscat 43cm 13300-13500rpm. Timpii R1 (initial carb setting after break in) 10.1s/9.9s R2 9.8s R3 9.4s 10.64s (high load) R4 9.96s 11.34s (high load) R6 10.72s
    0 0 0
  • 1M54S
    Timpii: MS661C-M 9.02s 9.78s FarmerTec G660 9.5s 10.60s Stihl MS661C-M/7 pin/13300rpm FarmerTec Holzfforma G660/7 pin/~13300rpm ES Light bar - 50cm Stihl RS new chain LS+/HP Ultra 30ml
    0 0 0
  • 22M59S
    So I was going to get started on fixing the McCullough Timber Bear. Then My Buddy Will stopped by with his new G660 still in the box. So we collaborated.
    0 0 0
  • 4M1S
    New out of the box Farmertec G372 vs G660. In my opinion the G660 takes the cake. Both are good saws out of the box and with some adjustment can become excellent tools.
    0 0 0
  • 6M18S
    The FarmerTec G660 is wearing a 32 bar with full comp chain and the Makita/Dolmar 7910 is using a 24 bar and chain. The wood is aleppo pine which is a hard wood pine and is full of sap and is very dense.
    0 0 0
  • 8M18S
    After five tanks of mixed fuel through this chiansaw I've decided to tune it to 13,500RPM. These saws can be found at and are an excellent deal. They are compatible with Stihl's 660 and 066 chainsaws. Overall I am very pleased with this saw~
    0 0 0
  • 4M24S
    Using my Farmertec G660 chainsaw I make a simple bench out of a log. This is my first time making a bench like this and in my own opinion it is a little crude but it serves it's purpose.
    0 0 0
  • 7M51S
    Unboxing of the Huztl Holzfforma G660 chainsaw which is compatible with Stihl's 660 and 066 magnum chainsaws. Well-assembled and ready to run!
    0 0 0

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