Stihl 029 super ?

Hello, newbie here. I just picked up a 029 super for $25 bucks from a close 5 add. I didn't check to see it run just met paid the guy and left. Anyhow I took the saw apart cleaned it all up and did a muffler mod I saw online. I already had 40/1 mix with cam2 gas for my backpack blower so I filled it with that. I got the saw running but it would not idle just stall. Then hard to start. So today I took the muffler back off and started it with no muffler and it ran great and idled fine, actually a little high. So I put muffler back on and same thing hard to start no idle stalls right out. Any ideas on what I do next? I just want to get this running to resell as I have a nice husky I've had for 25 plus years that I use very limited. Thanks in advance for any advice.

 

Check your spark screen in muffler.

If clogged, torch it good to clean it off.

 

I removed the screen. Was clean, but I left it off.

 

It's junk you can send it to me I'll use it for a boat anchor!

It might be as simple as retuning the carb. I'd start there. Let us know if that helps or if you already tried that.

 

Any directions on how to tune the carb? I've never done one. But would like to learn.

 

Good tutorial here:
Saw Carb Tuning

 

Thank you !

 

Assuming the top end is in good shape with good compression - you likely looked when you removed the muffler. For that money into the saw, I'd be starting fresh with a carb kit, new fuel line and filter, and spark plug - then you have the basics back in order and can maintain from there. Make sure the air filter is clean and in good condition. Great deal for sure! Cheers!

 

These are great saws. My family bought mine new about 16 years ago. It's been a pull and go saw. Sure, there's lighter saws, and more powerful ones, but it has potential to be a bigger saw if needed.

I hear the muffler is a real bottleneck as far as power potential with it not being modified otherwise.

 

Solid saws for sure. They really wake up to a muffler mod and slight ignition timing advance. Of course they like the 039/390 top end swap even gooder!

 

Mine's still original, muffler and all. One of these days I'll mm it. Original fuel line, even with using all e10 from day 1, and original top end still. I've got no idea on its compression anymore, but it feels pretty healthy to me. It's cut at least 2 cords a year since new, most years about double that.

 

Op your saw is starving for fuel. It could be the fuel inlet screen in carb is plugged. Fuel filter is plugged. Fuel line to carb is cracked or L needle is set to lean.

Just a couple things to look at.

 

can someone explain how can the saw work good without muffler but dont work with the muffler as the op say in his first post .
also he have say that the muffler screen was clean

 

He said he did a muffler mod too. Was it running any better before that? I'd start with the tune.

Nice score!

 

Last night when I posted the saw is starving I was thinking of it like a muffler mod. More air through is needing more fuel.

Thinking about it this am, if the saw will only run with the muffler off , that is effectively leaning the mixture. Which means the saw is to rich? I think I have effectively confused myself.

 

I'd try an AM carb. Cost $6-$15 on ebay.

 

I would start over. Make sure your carb is properly cleaned and rinsed of all material.
Put high and low needle all the way in (clockwise)
Unscrew each, one turn counter clockwise. That should get you started. May have to increase idle some.

 

Thanks, I will try that.


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Thanks again guys. I got it running and warmed it up good, adjusted carb and it is running fine.

 

What was your fix? Just carb adjust?