Question about Poulan Pro Chain Saw 46cc 20"
Look at the side of your saw where the chain and bar are; you'll see 2 nuts. These nuts will need to be loosened but don't remove just yet. Now look on that same side in front of where those nuts are and you should see a small screw head for a flat blade screwdriver.If it's not there then look on the inside of the bar on the saw body.Loosen that screw 3 turns or so then remove those nuts the rest of the way. Take of the side cover and push the bar towards the saw body - this should make the chain hang off the bar. Remove the chain and pay attention to the direction of the cutting tooth in relation to the lug in front of the tooth. This lug is the anti - kickback lug and on the new chain the lug MUST be in front of the cutting tooth of the chain. Re - install the chain, putting the back of the chain over the drum on the saw first then the front, making sure it is not hung up on the little metal bar on the bottom of the saw. Look on the bar - you'll see a hole in the bar that the peg attached to the screw goes in. Make sure that peg goes into the hole - adjust the peg by turning the screw so the peg lines up properly.Now replace the side cover, holding it flat against the saw body as you re - install those nuts on the saw. Tighten the nuts until they push the side cover flush to the saw. Now lift up on the tip of the bar and turn that screw to tighten the chain and adjust until the chain is flush all along the bar.Don't overtighten the chain as you may fry the bearings.The chain is tight enough when you lift on the chain and you can lift the link you're holding out of the track on the bar, with the bottom of the chain just barely coming out of that track.Tighten the nuts the rest of the way, being careful not to tighten them more than they were in the first place. Now start your saw per standard procedure, warm it up and make 2 cuts. Shut it off and check the chain tension to above specs - and you should be good.
Posted on Nov 22, 2010
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Posted on Jan 02, 2017
SOURCE: Poulan chainsaw 46cc 20" chain
You normally have 3 screws - idle speed - slow running and fast running.
First take care as if it runs faster than idle speed that chain will be whipping around also.
Second you have to determine what is the problem. Is it faulty at low speeds or high speeds ? or won't it idle.
If it has turn stops fitted to the screws you only have a small adjustments either way.
If it won't idle, try turning in the idle screw a half turn - until the chain just starts to move slowly.
If its dying at slow speeds, get is going and slow turn the slow screw out until it starts to run a bit rough then turn it back in to the point where its running smoothly.
Bad fast speed can be caused by simple things such as a blocked muffler ( insects too - I had one blocked off by a mudnest wasp) - otherwise get it running at full and adjust the fast screw as per the slow one - out till its rough then back in slowly until its smooth.
Suggest before all this tho that you get it running with the cover off the carby and then give it a good squirt of carby cleaner first - it may just clear out any 'poop' thats there.
(Have faith even tho I have a Poulan with a carb that refuses to run on anything but carby cleaner. I have pulled it apart a few times and renewed all the perishable bits buts its a real pig)
Posted on Feb 28, 2009
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