Author Topic: Stihl 084  (Read 7592 times)

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Offline Cut4fun .

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Re: Stihl 084 AV dies at idle
« Reply #30 on: October 29, 2011, 03:22:50 pm »
I didnt find any of my old kits. Must have gave then away with some 084 stuff somewhere along the way.

I get my carb kits and filters from Mowers4u in NY.  Their website http://www.mowers4u.com/

Ebay store for their kit  http://www.ebay.com/itm/TILLOTSON-CARBURETOR-REPAIR-KIT-STIHL-084-SAW-RK-1-HT-/270380464279?pt=LH_DefaultDomain_0&hash=item3ef3ee7897
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Offline mike84c

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Re: Stihl 084 AV dies at idle
« Reply #31 on: October 29, 2011, 06:20:54 pm »
thanks I'll try them.  and I think 60 to 75 for a good carb is reasonable, by the way

Offline mdavlee

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Re: Stihl 084 AV dies at idle
« Reply #32 on: October 29, 2011, 10:29:48 pm »
Just a quick thought the carb has 3 screws? One for H, one for L, and the idle. It seems as if it's not adjustable you're adjusting the idle in to 0 turns when it should be out some.

Offline mike84c

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Re: Stihl 084 AV dies at idle
« Reply #33 on: October 31, 2011, 10:56:29 am »
I've played with the two needles,the low doesn't do anything to help, and if I openthe high more than 0 turns, it runs way too rich at high speed.  We had 16" of wet heavy snow on saturday, and I spend all day sunday cutting up some 30" oaks that fell on my property. The saw runs ok at speed, but you have to go from cut to cut, or it will stall.  That's a little tough on the arms and back, as I ran 3 tanks of fuel thru it.  Right now, I'll wait for my carb kit, and let you know what if anything it does to help.

Offline mdavlee

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Re: Stihl 084 AV dies at idle
« Reply #34 on: October 31, 2011, 09:37:51 pm »
I just wanted to make sure it was an adjustable carb. I would try to run the idle screw in a little more.

Offline adam32

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Re: Stihl 084 AV dies at idle
« Reply #35 on: November 01, 2011, 12:15:53 am »
Run the idle screw all the way in, then hold the trigger where it idles nice then look at the gap between the linkage and the idle stop/screw. I've had to "shim" some idle screws to allow enough adjustment to idle well...

Offline Cut4fun .

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Re: Stihl 084 AV dies at idle
« Reply #36 on: November 01, 2011, 06:37:43 am »
You guys jogged my memory loose with your idle screw talk. I do remember one of the 084 carbs with electrical tape or something like that on the idle screw making it thicker to make the idle work right.
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Offline mike84c

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Re: Stihl 084 AV dies at idle
« Reply #37 on: November 01, 2011, 10:40:15 am »
I'll try to shim the idle adjustment screw, maybe that's the problem. I'm still without power fromthe snow storm, so it'll be a couple of days more.  While I'm waiting, what's the most obvious cause of bar oil leaking out from beneath the bar nuts area, when the saw is sitting after running, quite a lot, maybe a slick the size of a dinner plate?  For a saw that's been a pain in the butt lately, it still cuts like crazy.  went from that to my Husky 272, and the 272 felt like a toy
Mike

Offline mike84c

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Re: Stihl 084 AV dies at idle
« Reply #38 on: November 01, 2011, 04:11:18 pm »
I tried to shim the idle screw, but it didn't work.  It raised the idle, but unless you keep it about 1/3 throttle or greater, it will run for 4 or 5 seconds, start to lean out and die. 

Offline mike84c

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Re: Stihl 084 AV dies at idle
« Reply #39 on: November 10, 2011, 08:20:09 am »
Well the tillotson kit came yesterday, and I installed it on the carb.  Unfortunately no change, still runs for a few seconds at low speed then dies.  runs good at high speed.  I removed the vent cap, thinking that might be a problem, no change.  I added the paper gasket that came with the carb kit between the carb and carb mounting surface, figuring maybe I was getting a leak here, but no change.  I guess my next try will be changing the pulse line, possibly a leak here?  I'm running out of ideas, anybody got any?  I ordered another oil pick up tube, as that was leaking also, but as far as the idle goes, I've got nothing!
thanks
Mike

 

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