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STIHL The Official Stihl Chainsaws Thread

PogoInTheWoods

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MS193t carb question:

How many turns open on the H& L jet screws?

And, are the China carbs any good?

They recommend a process beginning with a high idle around 3.3k via the idle adjust screw and dialing in the Lo jet from there. Repeat as necessary until it settles in at 2.5~2.7k I think. Once it's settled down, set the H from there for like 13.5 . I'll dig up their procedure for you. I've tried several ways and the results end up about the same each way -- lousy. I've never had a 193T spool up with any zip.

And it is a China carb. And the answer is no! LOL
 

Partner

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the Chinese carburetor somehow works there ;-) but maybe only in Chinese chainsaws ;-) and as for the factory H&L screw settings, you have to ask yourself whether we have a brand new engine 100% tight
 

67L36Driver

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We got no speed indicator so we’ll start at one by one and hope we get lucky. [emoji1696]

I hate Zama carbs! [emoji2959]
 

PogoInTheWoods

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A Fast-Tach or Tiny-Tach comes in handy now and then. Got my Fast-Tach back when they were around $30. $113 for one I just saw on eBay. Some decent deals out here on Tiny-Tachs though. $64 for a pair of em on eBay. They're wired devices where the Fast-Tach is a wire free inductance device. Good units.
 

67L36Driver

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It was the spark screen. [emoji849] Near total plugged up.

Started & ran/cut great at one x one.

So much for Stihl Ultra. [emoji107]
 

PogoInTheWoods

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Anything running too fat or at excessive ratios will do that -- especially if the operator is afraid to wind it out. Line trimmers are notorious for plugged screens because they're always being feathered. Leaf blowers run wide open and rarely plug a screen.

Ultra is a proven good clean synthetic. but let's not go there.
 

Al Smith

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You could just remove the screen .In Ohio as far as I know we have no chainsaw police .
 

Al Smith

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I just get a kick out of it .Something as simple as a screen plugging up .Now if you are on the slopes of Utah in fire season or California which is always on fire I'd be concerned .In Ohio unless in a wheat field in July it would take a napalm strike from a B52 to set the woods afire . I don't think I have anything with a screen unless it's several I've yet to even start up .It happens they multiply like stray cats .:)
 

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I picked up an 066, a first one for me.
No pics yet as I just recently sat on my phone and broke it.
I do not know a whole lot about this lineage of saws. This one has no decomp hole in the top plastic but the cylinder has a plugged decomp hole. The cylinder is stihl branded, not aftermarket. Metal flywheel.
It is hard hard hard to pull over even with an elasto handle.
The air filter is the oval style not a flattish screen thing like my 064. What have I got? Is there A thread on here with information on the 066/660 variations anyone might suggest I read?
 

Maintenance Chief

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I picked up an 066, a first one for me.
No pics yet as I just recently sat on my phone and broke it.
I do not know a whole lot about this lineage of saws. This one has no decomp hole in the top plastic but the cylinder has a plugged decomp hole. The cylinder is stihl branded, not aftermarket. Metal flywheel.
It is hard hard hard to pull over even with an elasto handle.
The air filter is the oval style not a flattish screen thing like my 064. What have I got? Is there A thread on here with information on the 066/660 variations anyone might suggest I read?
Unless it's a replacement case there should be a serial number on the flat right below the muffler above the bar pad.
 

qurotro

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I picked up an 066, a first one for me.
No pics yet as I just recently sat on my phone and broke it.
I do not know a whole lot about this lineage of saws. This one has no decomp hole in the top plastic but the cylinder has a plugged decomp hole. The cylinder is stihl branded, not aftermarket. Metal flywheel.
It is hard hard hard to pull over even with an elasto handle.
The air filter is the oval style not a flattish screen thing like my 064. What have I got? Is there A thread on here with information on the 066/660 variations anyone might suggest I read?
Metal flywheel means narrow case 066?
 

JIMG

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The thing has quite the compression. It hangs by the pull rope with a 3 foot bar and I have to put it on the ground to have a chance at pulling it over. I put a decomp in and was surprised how little it helped. I also broke two T27 bits getting the cylinder bolts out. Is that normal? Never opened up a saw that was so stubborn.
066-3.jpg 066-1.jpg
 

spencerdiesel

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Timed an early (May 1996) bone stock 046 I’m working on for a friend. TWELVE degrees BD!
 

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heimannm

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A while back a local tree service dropped off three saws, 261, 460, and 660...all were in rough shape.

The 460 had the tank broken where the handle attaches at the bottom and (I discovered when putting it back together) the handle was rather bent up. The recoil starter cover had already been replaced, and the clutch cover was badly broken. HLS provided the new tank and clutch cover and that one is ready to go back to work.

The 660 was described as "hard to start", partial disassembly revealed a cut or worn section of the intake boot, that would certainly make it hard to start. New boot (manifold), new impulse line, carburetor kit (Vinny would describe the diaphragms as hard as woodpecker lips) replaced the rope and starter handle. Put it back together and it still wouldn't pull fuel to start...a shot of prime and it would run for a moment like a giant air leak. I saw a screw sticking out from under muffler...what could this be? Muffler off (also missing two screws) and the two front cylinder screws are missing...actually one fell out and was trapped under the muffler, the other had the head broken off. Since this saw will most likely be run over by a truck or accidentally tossed in the chipper, I just replaced the front screws and retorqued the rear ones. All back together and now it starts and runs as it should.

They said the 261 "needs an overhaul" however the compression is very good, but no spark. They started taking it apart and just threw most of the parts and fasteners in a bag and sent it along. I'll see what else they did next week.

How can anyone be so hard on their equipment, especially considering that is how they make a living?

Mark
 
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