Question about Poulan Pro Chain Saw 46cc 20"

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Fuel mix adjustment screw fell out

Found part & put it back in need to know proper adjustment for it

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  • cuzzmo Dec 17, 2008

    Right on the money!

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  • 211 Answers

Hi

First take a screwdriver and make a sign on it.Check and note how many turns are at Low speed ."L" adjustment.Then adjust High speed "H" at half a turn less than "L".Idle speed "T" adjust accordingly.
Start the engine.

best regards savumihai71

Posted on Dec 10, 2008

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Posted on Jan 02, 2017

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1 Answer

Backfires


to much air when mixing with fuel in carb find air mixtur screw on carb an whale running turn in slowley till it stops backfiring turning the screw in adjusts the air mixing with fuel the screw is useuly located on the side of the carb witch the toub hooked up to put fuel in carb is
or you could re set it by screwing all the way in then screwing out 3 whole turns then whale running turn out til it back fires then turn screw in haf to three quarters of a turn in hope this helps

Nov 27, 2012 | Motorcycles

1 Answer

Husqvarna 340 will not idle


To set the H and L adjustments, screw them in until they lightly seat. Then back both out 1 1/2 turns. This will get you in the ballpark. They will still need to be fine tuned for proper settings.

Apr 03, 2017 | Husqvarna Garden

1 Answer

How to adjust fuel air mix in Ryobi Lawn hornet


hello sir,, now there are two types of carb.adjustment screw covers,the old one where there are plastic over the screws,simple remove the plastic covers with a pair of needle nose pliers or cutting off,,,second are the new ones that are above the adjustment screws,which you have to take your drummel tool with the cutting blade and cut slots in the screws, after you get this done it is important to count the number of rotations in until stops make note how many. because you are going to reset the same way.now remove the screws,put to the side when you get ready to put screws in put in all the way than back out as many turns that you noted, now that is factory set there should only be a small adjustment to do. the rule of thumb is turn both out 1 1/4 turn and adjust in until saw runs smooth and idles ok, it is hard to adjust the top speed when saw is running wide open,let saw idle when adjusting top speed is easier that way, when you go to cut wood you may have to readjust top speed, the above does apply some what if you are not using fresh gas mix and dumped out the old fuel and starting with fresh,and a new plug CJ8Y,and as you know the saw has to breath in and out by this i mean a clean air filter,make sure the small screen on the muffler is not cloged,this will keep saw from running at peak speed and sawing wood, ok i have ran across a few saws to where the small screen in the muffler is cloged so the saw would idle but not run at high rpm's,if you do and check all of the above your saw should run,oh btw check compression should be above 60 to 160 lbs, hope this helps,any comments welcome,please accept my solution,thank you. 00

Feb 12, 2012 | Ryobi Garden

1 Answer

MY SPARK PLUG FOULSALL THE TIME. BLACK SOOTY ON THE END OF THE PLUG.


Ok most likely cause for this is jetting (Carbi) and or the air / fuel mix screw set to rich - Well done for noticing though as no where near enough people read their spark plugs and make adjustments - they normally wait til bike don't work before researching?
Simplest and first option would be turn in your air/fuel mix screw quarter to half a turn in (clock wise) this leans the fuel mix slightly
Second option if still not helping from just screw adjustment is put the mix screw back to where it was before and change the pilot jet to a smaller size - the pilot jets have number stamped on them so once you have yours out look for the number and just buy new 1 or 2 sizes smaller (they only about $5 each) then of course go back to fine adjustments on your air/fuel mix screw to find the correct balance
You will very quickly know if your setting is to lean as result of adjustments as you will get back firing when rolling of the throttle if becomes to lean
jetting and air fuel mix adjustments can be annoying sometimes as you may need to go up a bit then down a bit then up again but take your time do very minor adjustments then check results and my tip is only ever change one thing at a time then record the change then test and record the result if you dont you will very quickly forget what you did, not know what to reverse if result was poor and if result was good you won't know exactly what made the improvement.
good luck mate regards Jamie

Jul 03, 2011 | 2003 Honda CRF 150 F

1 Answer

Mantis will only run when the choke is on. If I try to push the choke in it dies.


Having owned a Mantis for many years it sounds like your air/fuel mixture may be to lean when you push the choke in. First check the simple stuff. Make sure you are using fresh fuel with the proper 2-cycle oil mixture. Check or replace the fuel and air filters. Replace the spark plug annually. These are the routine maintenance procedures found in your owner's manual. If none of this solves your problem either the carb fuel mix adjustment screws are not set properly or a carb rebuild kit is needed. The proper setting for the mixture screws should be detailed in your manual. Removing the carb and replacing the needle valves, gasket and other items takes a little more expertise. Before jumping in to this and assuming all other maintenance has been performed press the fuel primer bulb several times before trying to start it. You should feel resistance after 3-4 pushes. If you don't feel any resistnace the carb is not being primed and the bulb needs replacement (you may notice a small fuel leak if this is the case). If you can get it primed, pull the choke out, start and let it run a minute or so. Then make small, gradual changes by turning the fuel mix screws (not the idle adjustment) as noted in your manual. Try to push the choke in half way or as far as you can without killing the engine. If may run a little rough but continue tweaking the screws until it smooths out a little. Gradually continue pushing the choke in and turning the adjustment screws as needed to keep it from stalling. This is best done with the tines supported off the ground during adjustments. Just make sure to protect yourself and others from coming in to contact with them. When set correctly you should be able to achieve full throttle with the choke fully closed. A little time and patience should get you up and going again. Of course you can always contanct Mantis at www.mantis.com or call them for troubleshooting assistance. Hope this helps.

May 25, 2011 | Mantis 2-Cycle Tiller

1 Answer

Homelite ST-155 trimmer; fuel air mix out of adjustment (operator error!). Will not start. Cleaned fuel filter, cap filter, added new fuel w/proper mix. Need basic fuel air adjustment to get it started.


do you have adjuster screw's on the carb???

if you do then screw them all the way in then back them out about 1 and half turn then slowly adjust until correct setting's are reached

Aug 18, 2010 | Homelite Garden

3 Answers

Trimmer will only run for a few secs then dies out


Sounds like you will need to clean your carburetor.
Sometimes you can get by with priming it a few times, and letting it
run a few times like that and it will flush the gunk out of the jets,
but most of the time you will need to rebuild the carburetor.
If the mower is over a couple years old, then I also recommend that you
buy and install a new carburetor repair kit, because the diaphragm will
get hard and that will cause it to be hard to crank.
When you clean your carburetor and remove the jet screws, count the
number of turns it takes to seat the jets from their original position.
That way when you go to put the jets back in, you know how many turns
they were in/out.
Please do not forget to rate me, Thanks
Good Luck, I hope this helped

May 17, 2010 | Craftsman Convertible 25cc. Gas Line...

1 Answer

Need the know the correct H and L settings for our Poulan P3314 14 in. Gas Chainsaw - 33CC. The chainsaw will not idle.


There are no hard and fast settings.
The initial starting point "H" and "L" are 1.5 turns CCW from lightly seated.
The"T" adjustment enters here too (idle speed) and there is initial setting without a tach, depending on age may not be any initial "T" setting.
The "L" needle is primarily idle performance (not speed) and acceleration to full throttle.
The "H" is mostly performance at speed, but all are interconnected.

Fresh mix of fuel. Put ALL of the old mix in any 4 cycle and start new. I suggest 50:1 regardless of what your manual says. This is the best performance adjustment I have found.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm
  • CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
  • Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
  • Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
  • There are 2 wav (sound - idle & full - may not be highlighted) files that I find most helpful, I think you will too.
If push comes to shove a local saw shop (I prefer Stihl mechanics and do not own a Stihl) should be considered.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

Mar 09, 2010 | Poulan P3314 14" Gas Chain Saw 2.0 Cuin...

2 Answers

The adjustment screw fell off


There is no adjustment screw. That should be all the way up so that it will compress the spring and lock the lift lever un the up position. You will need to put the spring, washer and then the Nylock nut back on, I use a standard socket with some paper wadded in the bottom and over one side to hold the nut it it while I screw it back on.

Nov 02, 2008 | KitchenAid K5SS Heavy Duty Commercial...

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