Question about Poulan Chainsaws
Have rebuilt the carb, but kit did not have gauge for adjusting the metal
flap, w/spring under it and going to the needle valve. The rebuild kit is
from Poulan for this carb. No instructions for adjusting the flap. Saw
will not start. Fuel and spark showing. New fuel hose and filter. Believe this is the problem.
I do not have a ring tool so I made me one. take a rad. hose
clamp and a beer can or coke can cut about a 4in long strip and
1 1/2 wide. glue one end on the inside of the clamp leave the
rest of the strip loose. Place over the rings and piston and
tighten but not to tight and bump the cylinder on the piston.
It does work. I do it on all the saws I work on.
Posted on Aug 20, 2014
SOURCE: poulan saw wont run
Clean the muffler spark arrestor screen and check the cylinder port for carbon build-up at the upper edge. Try presetting both carburetor H and L adjustments (from lightly CW stops) 1-1/2 turns CCW each. Start the engine and allow to warm up. Pull the throttle wide open and adjust H CW until the engine speed increases, but still 4-stroking. Correct setting is when the engine 4-strokes, but immediately 2-strokes when cutting. Allow to idle and adjust L for smoother running, yet allows the engine to 'follow the throttle'. Set idle speed to keep the engine running, but doesn't try to move the chain. You may have to look closer at your carburetor if the above doesn't help. Go to:
for an excellent article (but poor pix) on Walbro carburetors, but related to most all 2-stroke carburetors. Hope this helps!
Posted on Feb 24, 2010
If the carburetor has been rebuilt that leads me to believe that there was an adjustment made. The problems that can be encountered is that we like to adjust the carburetor to reach maximum performance. However, this ends up blowing the engine since there is a prescribed RPM for each saw, which is probably around 7k rpms. Now, we don't have enough vacuum to draw the fuel. There is another important area to check though before rebuilding the motor, and that is the adapter, or gourmet, that goes to the engine from the carb. Inspect it for leaks...you can do that by taking it off and turning it inside out to see if you have any holes or simply looking to see if it is dry rotted. If you have a hole, you can get the Black Sealant RTV at Advance Auto and fix it since no company no longer supplies that part for the Poulan Chain saw. If the motor is blown, you can rebuilt it rather simply, but unless you had a good ring tool to put the ring in the cylinder, you will want to place the piston/ring in the cylinder prior to putting the wrist pin and snap ring on wrist pin to avoid breaking the ring. You will need a good vice to hold the chainsaw in place though. This can be done by leaving the piston out far enough to get the wrist pin in with one snap ring on the one side then place bearing in then slide wrist pin in, then be careful no to pull the cylinder head off too far and now place the last snap ring in...of course you will need some sealant on the head gasket first prior to all of this. The reason I am telling you all of this is because on a chain saw, you must be willing to go the whole way since one problem leads to another and the truth of the matter is that if you are willing to go the whole distance, you can get that saw back running perfect...make sure mixture is good even if you need to make up a new mix... Good luck.
Posted on Oct 03, 2012
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