Author Topic: Stihl 066 Repair/Teardown/Reaasembly  (Read 2854 times)

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Offline Cut4fun .

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #10 on: June 13, 2012, 10:10:09 am »

My saw came wth no sprocket retaining washer or clip.  Where can I purchase these?  I also need the stock outer dog ear. 

 

If you dont have time to run back and forth to dealer and dont mind waiting on shipping and know what you want. You might try these guys. 

You can call and order too to make sure you get your order right.     http://www.northwoodsaw.com/store/
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Offline Drf255

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #11 on: June 14, 2012, 04:47:06 am »
I'm in touch with an eBay seller who will get me the circlip and washer. 

Next problem, Oiling. 

I set the pump up correctly (I think).  Changing the slot on the flywheel fixed the not running problem, it runs strong.   

The problem now is that the oil is seeping out of the clutch area and does not come out of the chain area.  Where is the oil supposed to come out of when everything is working properly? 

Offline 660magnum

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #12 on: June 14, 2012, 07:26:35 am »
The pump supplies oil to a slot behind the bar but above the bar mounting studs.
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Offline Drf255

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #13 on: June 14, 2012, 08:32:34 am »
I have no oil coming out of that slot ???

Offline 660magnum

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #14 on: June 14, 2012, 08:53:27 am »
There's a rubber hose that goes from the back of the pump into the oil tank. These often leak where the pump fits over the end of the hose.

The spiral worm that turns the pump has a wire arm that engages a slot in the clutch bell. If the arm is not engaged then the pump will not be running.

Trace the oil path from the pump to the oiling slot in the bar mount.
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Offline Drf255

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #15 on: June 14, 2012, 09:18:36 am »
it seems to pump oil, just not too slot.  The pickup tube is in place.  The small tit coming out of the pump fit into a small recess in the crankcase casting.  There was no gasket there, so i applied a small amount of copper formagasket aroung the opening, enough to not get into oil hole.

Offline 660magnum

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #16 on: June 14, 2012, 10:20:26 am »
I think there is a rubber ring that goes in there?

1122 649 5000
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Offline Drf255

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #17 on: June 22, 2012, 06:20:18 am »
Got the O ring (which is more of a short piece of tube) amend the oil flows correctly now. 

Had to replace the entire fuel cap.   I could not get the gasket alone, but at $8 I can be a sport. 

Can the ring that the chain goes into that slides over the sprocket (?name) be placed on either way?   I placed it with the numbers designating pitch on the outside, but the owners manual shows it the other way-the clover leaf pattern is facing out.  Is this reversible, or should I disassemble and turn it around?

This saw is ONE MEAN MOFO by the way.  I have the factory 20" bar on it that seems ridiculous. 

Offline Al Smith

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #18 on: June 22, 2012, 06:37:52 am »
Most times they run the 66's with a 36" bar around these parts .

Offline 660magnum

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Re: Stihl 066 Repair/Teardown/Reaasembly
« Reply #19 on: June 22, 2012, 10:53:35 am »
Got the O ring (which is more of a short piece of tube) amend the oil flows correctly now. 

Had to replace the entire fuel cap.   I could not get the gasket alone, but at $8 I can be a sport. 

Can the ring that the chain goes into that slides over the sprocket (?name) be placed on either way?   I placed it with the numbers designating pitch on the outside, but the owners manual shows it the other way-the clover leaf pattern is facing out.  Is this reversible, or should I disassemble and turn it around?

This saw is ONE MEAN MOFO by the way.  I have the factory 20" bar on it that seems ridiculous.
My Rim sprokets are mounted with the numbers out

I have several bars but the 24/25" or maybe a 32" seems pretty good for the wood you would be using this chainsaw on?

With the 066, they made a lot of changes to this chainsaw model during the 90's. There are several technical bulletins describing the differences and for example what coils match what flywheels to maintain the correct timing etc. I have a 066 and it is a Duke's mixture of different year parts that span the whole flat top era. The last 066 version wasn't much different than the first 660 version.
We should share what we know... someone may learn...
That knowledge can live after us... and that "Pays It Forward".
Be all that you can be . . .

 

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