Nik's Poulan Thread

[blk05crew]

Thanks.

 

[joe25DA]

Definitely thin rings

Nice! If it runs good I wouldn't worry about it. I haven't used my compression tester in two years. I used to check all my saws. Hardly do now.

 

[blk05crew]

Man this 4200 is starting to really frustrate me. After cleaning and putting a carb kit in I started it up today and it is still getting to much fuel and I can get it to idle. It sends fuel through the front of the muffler and even with the idle screw backed all the way off and the L and H screws set at 1 turn it still revs like crazy and turns the chain really fast. I don't know what do. I didn't replace the Welch plug when I did the carb kit, would that matter?

 

[Acornhill]

You have an air leak

 

[fossil]

Man this 4200 is starting to really frustrate me. After cleaning and putting a carb kit in I started it up today and it is still getting to much fuel and I can get it to idle. It sends fuel through the front of the muffler and even with the idle screw backed all the way off and the L and H screws set at 1 turn it still revs like crazy and turns the chain really fast. I don't know what do. I didn't replace the Welch plug when I did the carb kit, would that matter?

I would be looking at the carb again. Did you follow the right order of the diaphragms and gaskets when you installed them? You could have a metering needle issue. Did you hook the metering diaphragm into the metering lever? Is the metering lever level with the floor of the carb? Is the metering lever spring sitting on the little bump on the bottom of the metering lever? Little things not right will mess up the carb operation.

I don't know if you have a link to the Tillotson manual for your carb but here it is. Read through it and make sure you understand how everything goes together.
I doubt your welch plug is leaking.

http://www.tillotson.ie/docs/techinfo_hs_us.pdf

 

[blk05crew]

Ok thanks guys. Meeting lever and everything looks right and carb was put back together correctly. I'll have to look at that manual and take it apart again.

 

[Acornhill]

Check all of your gaskets

 

[blk05crew]

I'll check everything again. Just frustrating trying to track this down! Oh well, part of the game right?!

 

[rocketnorton]

vac test while carb is off...

 

[fossil]

The saw may well have an air leak but I've never seen that cause fuel to puke out of the carb with the needles at 1 turn out.
I would say there's an issue in the carb.

 

[blk05crew]

The saw may well have an air leak but I've never seen that cause fuel to puke out of the carb with the needles at 1 turn out.
I would say there's an issue in the carb.

That was my thought too. I didn't replace the welch plug when I did the carb kit, could that be a problem? I guess I don't know enough to know what the welch plug does.

 

[Guido Salvage]

Is the timing off?

 

[blk05crew]

Is the timing off?

I'm not sure, I don't know much about timing on these. A lot of this is new to me and I'm learning as I go. I really think it's something with the carb though. I just need to keep playing around with it.

 

[Acornhill]

Will the saw idle? Make sure the clutch is not slipping as well. Check the reed plate gasket to carb as well. If you turn both H and L screws all the way in will it start and run for a bit?

 

[blk05crew]

It will idle but the chain is always going. I'll check all of the gaskets again including the reed plate gasket. I'll try and close the H & L screws and see if it starts tonight.

 

[Acornhill]

If it idled and chain is moving, clean and check the clutch

 

[blk05crew]

If it idled and chain is moving, clean and check the clutch

Anything I should look for? I had the clutch apart last week when I replaced the oil pump gasket.

 

[Acornhill]

Springs or oil on the clutch causing it to slip

 

[blk05crew]

Thanks I'll check it again too. I'll get it figured out one of these days, just been frustrating so far!

 

[fossil]

Thanks I'll check it again too. I'll get it figured out one of these days, just been frustrating so far!

Frustrating saws are a good way to learn. When you get this one done you will have gained quite a bit of useful knowledge.