Chainsaw Repair

Husqvarna - Stihl - Poulan - Jonsered - Dolmar chainsaws and more => Stihl => Topic started by: Seldomseen on May 15, 2017, 11:39:28 am

Title: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Seldomseen on May 15, 2017, 11:39:28 am
This old saw runs strong for a few minutes then stalls out. If I wait a few minutes it will restart then stalls out again  ???. I took it to a local dealer (not friendly) who looked it over and a week later told me to come pick it up. "It probably has a vacuum problem with air flow to the carburetor". "Can't help ya, no parts available for that saw ::)." I say "what do I do?". His reply was... get this, " Can't tell ya anything other than throw it in the dump. Your S.O.L." >:(

Nice Guy.

I put a post over on the Wanted page for same saw for parts but am hoping someone can help me here. I am not really engine savvy but can sometimes replace a bad part and am not willing to throw this saw away. It's previous owner barely used it over all those years.

Thanks.
Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Cut4fun . on May 15, 2017, 12:58:43 pm
Sounds more like the coil problem to me.   Thought coils going out in these was common.

Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Seldomseen on May 15, 2017, 02:18:26 pm
Cut4fun, where do we go for parts for old saws?

Seldomseen
Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Cut4fun . on May 15, 2017, 02:58:08 pm
There was guys selling 056 parts and whole runners on my Chainsaw Repair facebook group.  Look for the chainsaw repair group with over 22,000 members then you will be on the right group.

Link to chainsaw repair group on FB  https://www.facebook.com/groups/415662708518445/?ref=bookmarks

Also check with Scott in VT at www.chainsawr.com

Lot of good stihl dealers on the FB group that is willing to help too.  ;)

Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: sharkey on May 19, 2017, 03:57:19 am
There are work arounds for most problems.  First thing you have to come up with is why it isnt running right.  Its unfortunate that the dealer couldnt put forth a little more effort to help you sort it out.  It could be something so stupid as a plugged up tank vent or gas cap that is starving the carb for fuel. 

First thing I would do is test the ignition.  Buy a new -non resistor- spark plug for the saw.  Something like a standard Champion CJ-6.  Take the old plug out and bend the ignitor ground arm up to 1/4 of an inch away from the center electrode.  Use the new plug in the saw.  Now set up back in the corner of your garage, with the door open and start er up.  The reason I say back in the corner is because you need to be able to see the spark and that may be difficult out in the sunlight.  Just find a place where you can see the spark is what is up.  As soon as it quits, test it for spark with your test plug.  If you have a spark jumping the gap on the test plug then its not the ignition.  Give it a go and let us know what you find.       
Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Seldomseen on May 19, 2017, 09:35:30 am
Just sat down to my email and wanted to reply. I will give this all a go and report back. I did see that in the gas cap is a tiny little brass screw which I'm assuming is a vent (I'll check the parts diagram). I don't want to unscrew it too far so that the vibration loosens it the rest of the way and I lose it but I'll see what that does first.
Title: Re: '70's early '80's? 056 AV SUPER (Vacuum problem)?
Post by: Seldomseen on May 19, 2017, 09:37:53 am
Whoops, I think that's the Oil Fill Cap.  :-\