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My pp4620avhd poulan PRI chainsaw has hard compression, with the carb and muffler removed it is still hard, with the spark plug removed it is easy. What could be the problem?

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  • Greg Gibson
    Greg Gibson Apr 20, 2017

    The compression is so hard I can barely pull the rope

  • richie46 Apr 20, 2017

    Some of those units can be a bear to start because of the high effort involved in pulling the starter. That is why some of the units have a somewhat compression release to make it easier to pull and start. I keep hurting my back when I use my power gear and it is getting to the point where I might have to have others do the pulling for me!!!!!!

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  • Poulan Master
  • 12,962 Answers

Unless unit has some sort of compression release for easier starting, it is something that you will just have to live with.

Due to the high compression, it should have plenty of power after starting

Posted on Apr 19, 2017

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Posted on Jan 02, 2017

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  • 45 Answers

SOURCE: Husqvarna Chain Saw Rope Pulls Very Hard, what is the cause?????????

Has it always done this or has it developed?
Some saws have a decompression button to make it easier to pull over.

Posted on Oct 07, 2008

  • 97 Answers

SOURCE: Chainsaw will not start

Remove muffler and check for carbon blockage.
If that is ok check crankshaft seals for leakage.

Posted on Mar 14, 2009

  • 226 Answers

SOURCE: can,t hardley pull starter cord. I've removed

What i have to occasionally do for a chain saw after it sits all winter is to put something like WD40 in the spark plug hole and crank it over several times. What happens to me is that the piston gets gunked up from the gas that ran down into it during the winter and it won't crank over hardly at all. This is probably your problem. I have also found that if i store my saws with the tank down, the gas cant get into the carb and do this. (Although it's better to drain tank).
If this has been a running saw instead of a stored one, you probably need a rebuild kit if the piston is scored.

Posted on Apr 15, 2009

llbigcat2000
  • 1 Answer

SOURCE: Won't start. Has compression. backfiring through

On many riding mowers there are two wires that at the bottom of the carb bowl, these wires go to a solenoid which closes a valve so gas will shut-off when the start key is turned off. When this solenoid is bad it will not close which let gas keep going to the carb so the eng will bang through the carb or muffer. Hope that this will Help. Hugh Lyon

Posted on Aug 02, 2009

dontbother10
  • 2220 Answers

SOURCE: poulan 34cc chainsaw. wont start. replaced

Set the gap as Drallim suggests then follow this to test the ignition system, the entire system.

Ignition Coil Test by SmallEng.com
http://www.youtube.com/watch?v=L7WNBDRG4C4
You may need to use a jumper wire between the threaded part of the plug and the cooling fins. You do not have to bend up the electrode. HTH
Lou

Posted on Feb 24, 2010

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3) fuel lines and tank filter
4) turn adjustment needles out (counterclockwise) 1/4 to 1/2 turn
Chain Saws:
5) check impulse tube and intake boot for cracks or leaks
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What i have to occasionally do for a chain saw after it sits all winter is to put something like WD40 in the spark plug hole and crank it over several times. What happens to me is that the piston gets gunked up from the gas that ran down into it during the winter and it won't crank over hardly at all. This is probably your problem. I have also found that if i store my saws with the tank down, the gas cant get into the carb and do this. (Although it's better to drain tank).
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