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Poulan pro 25cc high output engine stalls or bogs down when going to full throttle. runs wide open when choke is on . cannot take muffler apart to check . no adjustment screws on carb. , just pins.

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6ya6ya
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Posted on Jan 02, 2017

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  • 41 Answers

SOURCE: engine stalls out

sounds like a dirty carb or need to rebuild the carb, adj valves, new plug, do a tune up

Posted on Nov 25, 2008

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SOURCE: blower wont run at full throttle

Start with the spark plug it is the easiest.

But sounds like the carbourator is dirty, Probably fouled with old gas varnish. When it is idling give it a little throttle, flip the choke on and then full throttle. If it goes full throttle and doesn't conk out, it is a fuel issue.

Good Luck

Posted on Dec 11, 2008

#1 Taper
  • 1040 Answers

SOURCE: Toro 20016 engine surges up and down - then stalls

You have carburetor problems. Chances are the diaphragm needs to be changed and the carb. needs a good cleaning. If you need tips on carb. cleaning, let me know.

Jim

Posted on May 29, 2009

  • 168 Answers

SOURCE: Craftsman 32cc Trimmer Runs with choke at idle, then stalls

Sounds like somewhere you have a air leak. Most likely it's somewhere near the carburetor intake or maybe the carb itself. Could be a line from the primer if it has one and i do believe it should that could be leaking or loose. Good luck.

Posted on Aug 02, 2009

ollie reece
  • 1167 Answers

SOURCE: RM85 w/ 105 kit bogs down with rapid throttle onset rate

hi buddy set the needle clip to its normal condition and also on the carb is the mixture screw you need to turn this all the way in and out 1 turns and try this you will always get a bog if you rev fully too quick i had this problem with my kx85 and it was just this hope this helped mate i will send the pic in a mo

Posted on Sep 17, 2009

Testimonial: "Appreciate the help. I've been all over w/ the air mixture screw. Still smokey and bogging down."

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1 Answer

New poulan pro 25cc chokes out after if I give it full throttle. Runs ok except it wont stay running on full throtle.


I find with my Poulan Pro that you need to let it warm-up abit before applying full throttle, I live in Upstate NY where the weather has bee great lately,however, it stalls easy ..I mix 1-pint of 3 stroke oil to 1-gallon of gas for my weed eater and have no problem

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POULAN PRO CHAINSAW DOES NO WANT TO RUN AT FULL THROTTLE & WILL BOG DOWN UNDER LOAD. TRIED NEW GAS & CHECKED SPARK PLUG. HAD IT TUNED UP ONCE & STILL NO BETTER.


If this machine has a spark arrestor in the muffler this may be blocked, check around the muffler outlet for a gauze which may have carboned up.You need to find out if it is running rich, or lean which is causing the problem. too rich a fuel/oil mixture will also cause the machine to bog down at full revs, it should run a 50-1 mix with good quaility two stroke oil. If it is running too lean it will also cause this type of problem ( blocked fuel filter, cracked fuel hose, dirt in the carb )

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1 Answer

The saw stalls when under load and at high speed, runs good at idle and mid speeds, when you pull throttle all the way back with out load saw will bog down and die.


Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other damage. Make sure the carburetor is solidly mounted to the engine. Hope this helps!

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Weed eater starts but won't stay running


just bought a new Poulan 25cc 2cycle gas power weed eater . I can start it with the choke on but as soon as put on run it dies.

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1 Answer

Weedeater dies when you open choke


After you start it and are in the second stage of the choke (half choke ) let it run for awhile until it warms a bit then try openning choke and going to full throttle.

May 21, 2010 | Poulan 25cc 2-Cycle Gas Powered String...

1 Answer

I have a poulan pro pp4620avhd chainsaw. I can get it to start and stay running as long as I have the choke on. I can even run it at high speed using the choke control. When I pull the trigger to feed it...


Check the fuel filter and muffler for plugging. Check the fuel lines for condition. Check the carburetor fasteners for tightness. If the saw has a lot of hours, remove the lower section of the carburetor and check the condition of the diaphragm--it should not be hard/cracked. If everything seems to check out ok, Turn both jet screws CW to stops (lightly), then CCW each 1-1/2 turns. The engine should start and run--allow the engine to warm up. Pull the throttle full on and adjust H needle CW til the engine speeds up, but still 4-strokes. Proper adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Let idle and adjust L CW so that the engine runs fairly well, but allows the engine to 'follow the throttle'. Adjust the idle speed screw so that the chain stops turning, but the engine continues to run. Hope this helps!

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2 Answers

My poulan wild thing 2375 bogs out when throttle


Make sure that the air cleaner and muffler are not plugged. Check the carburetor screws and nuts for tightness. After turning both needles CW to stops (lightly), back them out CCW 1-1/2 turns each. Start the engine and allow to warm up. Open the throttle and adjust the H needle CW somewhat until the engine speeds up, but is 4-stroking. Correct adjustment is when the engine 4-strokes, but immediately 2-strokes when cutting. Release the throttle and adjust L CW till the engine runs fairly smoothly, but allows the engine to 'follow the throttle'. Set the idle speed screw so that the chain doesn't turn, but the engine keeps running. Hope this helps!

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1 Answer

How do I adjust needle valves on a 25cc Homelite UT08111A Backpack leaf blower?


Set the lowend & highend needles to about 1 3/4 to 2 turns each. Choke the carb or prime it, until the carb is wet. Fire up the engine and let it warm up. Let's set the topend first since it's the easier of the two. Go to full throttle. Adjust the topend needle for peak RPM. Leave it wide open for about a minute to see if it changes any. Should the engine go lean, open the lowend needle slightly, if this dosen't work... you will have to adjust the needle valve inside the carb.( I will explain this later) If the topend runs OK, then slowly pull the throttle down until the engine begins to "four cycle" hold the throttle there. Adjust the lowend needle until the "four cycling" barely stops. Now lower the throttle more until it "four cycles" again, and adjust the lowend again. Keep doing this until you reach full idle. Now, from full idle begin to throttle up until the engine starts to bog or hesitate. Open up the lowend needle just enough to eliminate the bog or hesitation.

http://tech.flygsw.org/walbro_tuneup.htm

hope this helps :)
if it does please vote

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1 Answer

I have a poulan pro trimmer, it wont stay running


First of all, YES. boggs is a word in my dictionary. Remove the muffler and carefully take it apart. Pay close attention as to how it comes apart because it is vary important it goes back the same way. you will probable find that it is clogged. If it is then remove the debree. If it isn't then you will have to adjust the fuel mixture screw. First start the trimmer, then let it run for a few minutes to warm up, then gently turn the screw a little bit at a time counter clockwise first, squeezing the throttle inbetween adjustments . If it starts to take off then fine tune it untile your happy. If it boggs worse then turn it clockwise.

But first check the muffler.

Good luck

Aug 05, 2009 | Poulan 25cc 2-Cycle Gas Powered String...

1 Answer

Only runs on full throttle


Are you saying full throttle, or full choke? if full throttle, you should be able to set the idle up. the idle screw will be the one when you give it gas, it will be the screw on you'r throttle linkage. If full choke, maybe the spark arrestor is plugged. You can remove it by removing the muffler.It would be between the muffler and cylinder head. You don't need this to run.I hope any thing I posted will help.

Jun 19, 2009 | Poulan 25cc 2-Cycle Gas Powered String...

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