Poulan just died

[ohicutsalot]

Hi guys I'm new to this form and am here for advice. My brother-in-law reads arborist forms all the time but has never had the nerve to post.He suggested I try here for help. Heres my problem. I got a great deal on a poulan pro 46cc to add to my saw collection. I've probably cut 10 cords of wood with it this spring. and its been a great saw till Saturday I was nicely into falling an ash tree when I stop to wedge the tree. I left the saw idle in the tree. When I went back to it and revved it it died. Now it wont start.The engine was locked up momentarily but turned over after some effort. It now turn freely. maybe too freely. Can anyone tell me what the compression should be on this saw? I'm getting a reading of 80psi . I've got gas and clean spark my thought is that the rings are done. Most all of my saws run in the 120 to 140 range. Any advice before I rip this puppy apart?::deadhorse:

 

[lovetheoutdoors]

Hi guys I'm new to this form and am here for advice. My brother-in-law reads arborist forms all the time but has never had the nerve to post.He suggested I try here for help. Heres my problem. I got a great deal on a poulan pro 46cc to add to my saw collection. I've probably cut 10 cords of wood with it this spring. and its been a great saw till Saturday I was nicely into falling an ash tree when I stop to wedge the tree. I left the saw idle in the tree. When I went back to it and revved it it died. Now it wont start.The engine was locked up momentarily but turned over after some effort. It now turn freely. maybe too freely. Can anyone tell me what the compression should be on this saw? I'm getting a reading of 80psi . I've got gas and clean spark my thought is that the rings are done. Most all of my saws run in the 120 to 140 range. Any advice before I rip this puppy apart?::deadhorse:

sounds like you found the problem.....welcome to AS.

 

[ohicutsalot]

I really was hoping I'm wrong . If I am not wrong What would cause this saw to go like this , surely it wasn't from idleing on its side , cause if thats the case I should have distroyed a lot of saws by now.

 

[lovetheoutdoors]

I really was hoping I'm wrong . If I am not wrong What would cause this saw to go like this , surely it wasn't from idleing on its side , cause if thats the case I should have distroyed a lot of saws by now.

I cant think of a reason for that.....im bumed on this one but it sounds like a ring job is needed. Wait on some other fellas to reply, they might have other ideas. good luck

 

[Freakingstang]

Maybe you need to talk to someone that speaks Poulanese. I'd bet they'd know lol. Welcome to AS. I would venture to say, from what you have said that the motor was running lean and turning the saw on it's side made it run the leanest and locked it up. That is why it was froze for a while. Pull the muffler and look at the piston. Rings typically wear, not just break, although it can happen. Most saws need to see 110+ to run.

Good luck, I hope it isn't a burnt piston, but kinda sounds like it.


-Steve

 

[Justsaws]

As other people have suggested, pull the muffle and look at the piston and ring. The ring should move in and out of the groove freely. You can use a small screwdriver to carefully press on it. A little scuffing on the bottom of the piston is okay, but scuffing across the ring and it is probably time for some good used parts. Try putting a little gas mix in the cylinder with the muffler off and see if it will fire up.

Sometimes a saw with a small air leak will run lean positioned on it's side causing it to over heat and lock up. Mal-adjusted carbs can do the same thing.

If the scoring is light buff the piston and get a new ring. If it is bad start looking for a parts saw. A lot of Poulans use the same piston. Also some Huskys and Jonsereds. A lot of saw shop have Poulon part saws for sale if you ask because customers do not want to put the money into them and/or trade them in.

Easy saws to work on and can be good runners. Good luck.