Author Topic: 024 AVS tear down  (Read 1150 times)

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Offline woodyweeder

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Re: 024 AVS tear down
« Reply #20 on: November 08, 2012, 05:09:13 pm »
A picture of the saw.

Offline Al Smith

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Re: 024 AVS tear down
« Reply #21 on: November 08, 2012, 06:52:15 pm »
It's entirely possible the fuel line is stiff or in some way tangled up popping out of the fuel when it's tilted but that's only a wildguess .Usually if they die at an idle it's either the throttle plate is completly closed or the idle is set too lean .

Offline woodyweeder

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Re: 024 AVS tear down
« Reply #22 on: November 08, 2012, 11:03:12 pm »
Thanks, I checked the position of the fuel filter (it has a new line) and there was plenty of fuel in it at the time too.
I haven't replaiced the impulse line (but it's not damaged in any way I can detect), I will do this when I put my next parts order in as I also need new fuel/oil caps (or o rings at least) and AV rubbers.
Like I said, it idles fine while I hold it but a couple of seconds after I set it down the revs start to drop. It then gets the wobbles up (starts to shake as it nearly stalls) and then picks back up again. I get the feeling that the way the saw vibrates when it is on the ground has something to do with it.
As it idles fine while I hold it, I guess the throttle plate position is not the issue. I'll have a tweak of the low speed screw as suggested.

Offline Al Smith

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Re: 024 AVS tear down
« Reply #23 on: November 09, 2012, 08:38:41 am »
Impulse carbs can be fickle as a teenage prom queen .In spite of maybe rebuilding them for years and you might think you know everything about them they can have a personality all of their own .

I've got some like act up at idle but they run great at speed so I don't loose any sleep over them .If the SOB wants to die let it because mine will fire up on the first pull on a restart 95 percent of the time .To be quite truthfull about it  in my case they very seldom idle .Either off or running at speed .

Offline Cut4fun .

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Re: 024 AVS tear down
« Reply #24 on: November 09, 2012, 02:34:34 pm »
WAG  :P

Sounds like the fuel is puddling in the intake at idle. Moving around puts the puddled fuel to the cyl.  Maybe you have the fulcrum height adjusted wrong  in the carb or needle seat is letting fuel by if not seated.
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