Question about Poulan Pro Chain Saw 46cc 20"
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Posted on Jan 02, 2017
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my name is Dennis Gladx and I can assist you with the problem of getting the sprocket off of the crankshaft of your chainsaw.
To remove the centrifugal clutch and sprocket you unscrew it from the crankshaft and it has a left hand thread. Also a little trick to remove anything from a crankshaft that could turn while you want to unscrew the item, Remove the spark plug and insert some rope into the cylinder for the piston to squeeze against and you will jam the piston without damage.
Glad to be of assistance Please rate this solution because I can learn from your rating. Thank you
Posted on Nov 08, 2008
Sounds like you're not getting enough oil to the chain. Basically you've got an oil pump, pickup and filter involved in getting oil from the resovior to the chain/bar. If you cleaned the obvious area and the chain is not coated with oil, you may have a clog further up (inside) the oil delivery mechanisms. Also, drain the oil from the tank, and see if you can "blow" air through there. With the saw running & pointed down, you should be able to see oil on the ground being slung off the chain, if not, you are not getting enough oil to the chain.
Posted on Nov 29, 2008
Four things I can think of:
1) There is a short in your spark plug wire. When you bend it to connect the plug in the machine it allows the exposed cable to contact the engine block. Examine the wire all the way to the coil.
2) Flywheel key is sheared ( you obviously know how to take off the flywheel since you checked the seals).
3) Flywheel air gap is not set correctly. Loosen the coil. Put the cover of a notebook or the cardboard piece of a cigarette pack between the magnetic portion of the flywheel and the coil. Tighten the coil down. This will get you the proper gap.
4) Your cylinder/piston or rings are scrubbed out. Even though it passed a compression test, on rare occasions it will loose compression only when it fires. So do the following:
Remove your exhaust manifold. Look into the cylinder with a flash light. You are looking for scratches. Anything larger then a light fingernail is definite proof you need a new cylinder/piston assy.
If it passes that test do the following:
Pour mixed fuel straight into your cylinder until 1/4 full. Slowly pull your saw over while looking into the cylinder. If you see bubbles after the ring/rings go by then you need a new cylinder/piston assy. On rare occasions if no scratches are present on the cylinder wall or piston, you may be able to change just the rings.
First if you can get a inline spark tester so you can see if your getting spark with the plug installed.
Posted on Mar 31, 2009
Since you have good spark and good gas the only things left to check are the air filter and the carbeurator. If the air filter is dirty, replace it. While you are at the auto parts store also pick up a can of a gasoline additive called seafoam which will keep your carb. clean. Finally get a can of spray carb. cleaner and put a couple short squirts directly into the air intake which is right there when you remove the air filter.
Posted on May 20, 2009
Make sure someone hasn't run this saw without the oil in the fuel mixture. It is possible it is dry and some galling is happening. Or - if this saw is equipped with a compression bleeder (for easier starting), this could be not functioning and you're pulling through the normal compression (which can be a bit feisty!). Check for misalignment of some type having to do with the pull starter - check that the cord spool isn't rubbing on the housing when you pull. Good luck.
Posted on Nov 30, 2009
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