abused poulan question

[sonoransaw]

I hope this is the right place to post this....I have a Poulan PP5020AV. I bought it new a number of years ago back when I was a bit naive. I used cheap gas and oil and thought that was ok. Anyway, it stopped working for me after a couple seasons, and I just stuck it in the shed. Now I'm trying to revive it. I got it running and I can even cut some pretty heavy wood with it, but it doesn't run great. It surges and is erratic. I've messed with the carb adjustment screws extensively. I opened up the muffler. I cleaned the air filter. I checked the spark plug. I put in good fuel and oil. While the muffler was off I looked at the piston and there was some browning on the sides. Not a whole lot, but some. Do I need to replace the fuel filter? Clean/rebuild the carb? Appreciate any thoughts or suggestions....

 

[CR888]

Pull the carb and look at its insides, likely it needs a clean & kit. You want to play with saws?...don't waste time, you needs to learn how to clean/build carbs.

 

[Dub11]

Now this helped me a lot on carb cleaning/rebuilding, count how many times the H&L needles screw all the way in so when you go to reinstall them you know were to set them.

 

[backhoelover]

The screens are bad for swelling shut. New oem carbs are 20.00

 

[sonoransaw]

Thanks for the tips! Sounds like the carb is the culprit....(well, the dumb user, I mean....)

 

[Cut4fun]

Have you replaced the oem fuel lines? They are crap. They separate and then allow fines to clog up carb inside.

 

[AVB]

Don't you just love that Tygon LP-1200 line? Don't seem to fuel line problems, just creates more.

 

[sonoransaw]

Just picked up some fuel line and a filter....will get that replaced...thanks, Cut4fun...

 

[sonoransaw]

Pulled the filter and hose out....I can see that the inner tube is crimped. Has to be a problem...

Is there a way to tell if the fuel filter is any good or not? I picked up this tube and filter....Don't know if they're good quality or not???

 

[Lightning Performance]

Pulled the filter and hose out....I can see that the inner tube is crimped. Has to be a problem...

Is there a way to tell if the fuel filter is any good or not? I picked up this tube and filter....Don't know if they're good quality or not???

Idk
Echo makes good stuff reasonable. Don't be cheap on the fuel system. Thirty dollars well spent or less.

 

[Cut4fun]

You can see your fuel line separated.
The inside carb screen might be plugged up too. Might as well through a kit in it while down.

 

[Cut4fun]

IMO about $3 in oem echo black line.
Blow through fuel filter. Looks ok.
Carb kit 8
Check and clean screen inside carb


Never had any luck with clear lines. Tried those when first started myself. Last a year and harden.
That filter looks like a trimmer filter. I would check the oem used one out.

 

[sonoransaw]

That all helps....Thanks guys....sorry, I'm real green.....new to all this....I have some legit fuel line I got in a kit for one of my other saws. I'll use that until I can get some more....

 

[sonoransaw]

Made some progress (at least at eliminating possibilities)...Took the carb out. A couple of the fuel hoses just fell off their connection points. (Were they even attached?) I noticed the intake manifold boot showed signs of dry rotting (I live in the hot desert). I may need to order a new one. There was some crud buildup in the intake area. Maybe the air filter (which seems loose) isn't doing its job??? I replaced all the fuel lines (fun getting that through the tiny hole!) and the primer bulb. Cleaned the carb out real good with carb cleaner. Blew compressed air through everything.

Got her all hooked up...

My only casualty was that little screw on the carb. It fell down below and I forgot to get it out before hitting the area with air. It flew who knows where. I had an extra carb I stole one from. Darn it...

Anyway, it still doesn't run right at all. Next I'm going to change the fuel filter to a new one. Then I'm going to take the carb apart and see if I can see anything. The extra new carb I have may fit, so I may try that....

 

[Cut4fun]

Did you open carb and clean it out? The way your line was causes this.

Then put new carb kit back in right order?

If in doubt. New carb $20

 

[sonoransaw]

I will do that next. I don't have a rebuild kit, but I can open her up and see what I can see.....I can get the saw to run by partially holding open the choke. It's not getting the fuel it needs, even with screws open....

 

[Cut4fun]

Sure sounds like you have fines plugging the screen like in pic

 

[sonoransaw]

I think you're right! Tried a new filter and that didn't do it. Has to be in the carb. Will take that apart next...

 

[sonoransaw]

Took the carb apart....cleaned it thoroughly with carb cleaner.....seemed ok....put it back together....saw ran a little better/longer but still won't stay running despite much messing with the adjustment screws....still erratic.....I'm thinking a new carb may be in order....Should I have taken out the screw in the middle in the second pic? I left it alone.... (Just ordered a new carb...Hoping that does the trick.)

 

[AVB]

To me that metering diaphragm has stiffen and was needing replacement.