STIHL The Official Stihl Chainsaws Thread

[Hoser]

Picked up this round top 066 last night, mag rot in the case, seized up. Everything else looks in good shape and oem and is all there. Piston/ cylinder is soaking in penetrating oil to try and free it up.
Might this be worth trying to get back into shape for a work saw? Likely depends on if the cylinder cleans up?
Figured I’d ask before I spend any money on it.

 

[heimannm]

I received a care package from Jay Hansen so I decided to keep going on the 041 FB. Still looking for a handle for the 07...



Like many saws that get used, it was a filthy pig. Houston, we have a problem...





I don't know if the piston damage is from running lean due to an air leak, or from the air filter that had no flocking left.



I don't know if this one will run, but at least it will be clean and all there...



Mark

 

[heimannm]

Some progress today.





Mark

 

[heimannm]

041FB is whole again but only has enough compression to sputter a little. None the less, it will look just fine in the display.










Mark

 

[heimannm]

While I am looking for a handle bar for the 07, I decided to get the 08 cleaned up so I can try to get the bench cleared. This one has not been run in a while and the accumulations were dry and hard. I basically had to scrape/pick/scrape everything off even after soaking in mineral spirits for a couple of hours.











Mark

 

[heimannm]

All cleaned up now.





Mark

 

[Powerstroke Cowboy]

041FB is whole again but only has enough compression to sputter a little. None the less, it will look just fine in the display.

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Mark

Was the cylinder okay? If you had a New piston and ring would it run then? 44mm bore, right?

 

[heimannm]

I'm not that interested in putting a lot more into a saw that will just sit in the display. From the outside it looks whole, and it is, that will serve my purposes well.

Mark

 

[popopboat]

What do you use for cleaning parts?

 

[Powerstroke Cowboy]

I'm not that interested in putting a lot more into a saw that will just sit in the display. From the outside it looks whole, and it is, that will serve my purposes well.

Mark

What if the piston was free?

 

[heimannm]

Powerstroke - In that case I could be persuaded to invest the time to make it right.

popop - I have a parts washer with mineral spirits for starters, then if there are still some stubborn stains I use a product called "Greased Lighting". I have been very pleased and surprised (shocked even...) how effectively it cleans off stuff that the mineral sprits won't touch.

Greased Lightning Super Strength Multi-Purpose Cleaner & Degreaser, 32 fl oz - Walmart.com

Buy Greased Lightning Super Strength Multi-Purpose Cleaner & Degreaser, 32 fl oz at Walmart.com

www.walmart.com

The final step is a squirt of Ballistol and a good rub down.

Ballistol Multi Purpose Oil Lubricant - 6oz aerosol - Walmart.com

Buy Ballistol Multi Purpose Oil Lubricant - 6oz aerosol at Walmart.com

www.walmart.com

Mark

 

[heimannm]

Sorry...forgot where I was...

 

[heimannm]

I am missing the stop switch.







Starts, runs, idles, oils. Next stop will be a temporary home in the display as the next building is underway.

Mark

 

[HandLogger]

Does anyone on the Stihl thread happen to have a valid part number for a Stihl MS660 carburetor?

We bought the saw (brand new), back around 2008, It used to start and run just fine, but, after letting it sit for too long, it no longer starts. I'm assuming that this is a carb issue. I realize that most people would tell me to rebuild the carb that came with the saw, but I'm honest enough to admit that I'm no saw tech. Sure, I can replace a carburetor, but I don't wish to take one apart. I just don't have the required tools or chemicals necessary to rebuild a carb. I trust that you understand.

Have a good one ~
HandLogger

 

[Powerstroke Cowboy]

Does anyone on the Stihl thread happen to have a valid part number for a Stihl MS660 carburetor?

We bought the saw (brand new), back around 2008, It used to start and run just fine, but, after letting it sit for too long, it no longer starts. I'm assuming that this is a carb issue. I realize that most people would tell me to rebuild the carb that came with the saw, but I'm honest enough to admit that I'm no saw tech. Sure, I can replace a carburetor, but I don't wish to take one apart. I just don't have the required tools or chemicals necessary to rebuild a carb. I trust that you understand.

Have a good one ~
HandLogger

You might be able to find it cheaper somewhere else.

Stihl carburetor 1122-120-0621 | eBay

Genuine Stihl carburetor

www.ebay.com

 

[HandLogger]

You might be able to find it cheaper somewhere else.

Stihl carburetor 1122-120-0621 | eBay

Genuine Stihl carburetor

www.ebay.com

Thank you for that information, David!

 

[hacskaroly]

I realize that most people would tell me to rebuild the carb that came with the saw, but I'm honest enough to admit that I'm no saw tech. Sure, I can replace a carburetor, but I don't wish to take one apart. I just don't have the required tools or chemicals necessary to rebuild a carb.

If you do get a new carb, then you can take apart the old one for gee-whiz purposes. You should only need the following:

* slot screw driver
* phillips screw driver
* possibly an exacto knife or razor blade if the gaskets are stuck to the body
* carb cleaner (if you want to try to clean it).

Since it is bad carb, there is no worries about losing any parts, breaking anything or not getting it back together when you are done.

 

[HandLogger]

If you do get a new carb, then you can take apart the old one for gee-whiz purposes. You should only need the following:

* slot screw driver
* phillips screw driver
* possibly an exacto knife or razor blade if the gaskets are stuck to the body
* carb cleaner (if you want to try to clean it).

Since it is bad carb, there is no worries about losing any parts, breaking anything or not getting it back together when you are done.

Hi Hacskaroly ~

As I understand a carb rebuild, you need special size brushes and a carb soaking bath of some sort to clean out the openings inside of the carb. I don't have anything like that - and I'm in no position to buy things that won't get used very much. As I mentioned, I'm no saw tech.

 

[hacskaroly]

As I understand a carb rebuild, you need special size brushes and a carb soaking bath of some sort to clean out the openings inside of the carb.

All I have are the screw drivers listed and a razor blade, and some times I have a can of carb cleaner (with a little straw to direct the spray). I don't have anything special, no ultrasonic cleaner or little brushes. I totally understand not being a saw tech, I am the same way with cars once it gets past changing air filter, battery and spark plugs. I figured if you wanted to see what was inside the broken carb for gee-whiz, a couple of screw drivers will get you inside!

 

[HandLogger]

Rebuilding these carbs is all new to me, so everything you write is possibly teaching me something, right?