Stihl 041 AV won’t “accelerate”

[Eagle_Adam]

Hey fellas,

Just got finished with a mild rebuild/repair on my 041AV.

Seen here:https://www.arboristsite.com/community/threads/thoughts.329109/

Soon as I wrapped up I fired up the saw without the B/C on just to see if I had succeeded or not. The ol girl fired up on the 3/4th pull and since it was 3am I left it at that. Well today when I put the B/C on and fired her up again I came to realize that something was amiss :/

I’m sure the terminology is wrong but I’m describing it like this. I the chain just will not accelerate to a useable speed.....

Vid:


I’ve double checked everything i did and touched during the rebuild & re-tuned the carb to the best of my abilities.

So here’s my question(s):

- did i do something wrong during the rebuild?(if I did, what was it?)

- assuming the rebuild was ok, then what’s up with the saw?

As always, thanks in advance for any and all knowledge/tips you may share!

Adam

 

[cuinrearview]

Looks like your chain brake is engaged, or something is dragging in there.

 

[cuinrearview]

Try loosening the tension on your chain

 

[Wright Saw]

I agree with Cuinrearview, seems like the brake is engaged or maybe the chain is too tight. Another possible cause is the clutch may be slipping, or not staying engaged (isolater clutch styles).

 

[alexcagle]

Sounds like the ignition is afoul, or the muffler is full of mud dauber nests or spark arrestor is clogged up.

 

[HarleyT]

After figuring out what is wrong with the chain/sprocket,

clean and adjust the points.

 

[stihl86]

041 A V E

 

[HarleyT]

Just got finished with a mild rebuild/repair on my 041AV

 

[805 McCulloch]

This may seem stupid but I've done it myself before.If this has a rim sprocket did you make sure the chain is on it and not beside it

 

[TRTermite]

Is this a points saw or electronic?? Video says AVE (Stihl86) Your opening post says 041AV (HarleyT) I am with Harley T by the sound of it What led you to do the rebuild???? Was It running perfect before rebuild? Was it acting before rebuild as it is acting now?

 

[HarleyT]

I see the AVE now on the movie.
I don't see any thing on the saw itself.
Sounds like a saw with ignition problems.
I'll bet it has points...

 

[CausticUC]

Interesting, it almost sounds like a timing/advance issue where you are firing too late. If it ran long enough, myself, I'd expect the exhaust would be super hot very quickly.

If it were too early, you would instantly smell it.

I do agree though, it could be an issue with your points, possibly with the spring. If it were a Briggs, I'd suspect the arm, but I do not recall my 041 having one.

 

[TRTermite]

Just got finished with a mild rebuild/repair on my 041AV.

Was there issues prior the rebuild ?? How Mild?

 

[TRTermite]

OP must be to busy workin on this 041 and no time to reply

 

[CausticUC]

It is also Friday, maybe awaiting the weekend?

 

[lone wolf]

After figuring out what is wrong with the chain/sprocket,

clean and adjust the points.

Exactly, it sounds like it is breaking up electrically and the clutch isn't grabbing!

 

[Eagle_Adam]

Sorry guys, I’m on an out of town job right now with minimal cell service.

To answer some of the questions above:

- Correct it’s an 041AVE
- I don’t THINK that it has points, at least not that I saw. But to be honest I saw electronic on the top of the saw and just assumed.
- chain is correctly placed on the rim sprocket(made this mistake once too)
- muffler is clear, I checked it during the “rebuild”
- the rebuild was done due to this same issue and general lack of consistent performance(good or bad)
- spark screen has been cleaned

If I missed a question or anybody has more lemme know. I’ll do my best to check back when I can/have service.

Thanks for all the help!

Adam

 

[Eagle_Adam]

My thoughts were clutch related, but I don’t have money to just throw at parts hoping I’m right.

 

[CausticUC]

Just my comment about timing/advance.

You may have play in your key or if it is electronic, the trigger plate may need to be rotated slightly.

 

[Eagle_Adam]

Try loosening the tension on your chain

I’ll try these when I get back to the house