Question about Poulan Pro Chain Saw 46cc 20"

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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 gas it starts to stall. I have to keep pulling the trigger then letting go to keep it running without the choke on. I ahve cleaned the air filter and changed the spark plug. Any Ideas

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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!

Posted on May 14, 2010

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1 Answer

How do you remove a clutch drum on Poulan Pro PP4620AVHD chain saw


YouTube can be a great help with video's of 'how to' do things.

I have attached a video from 'donnyboy73.' I found his video's to be very informative and well put together. The video link is not of your exact saw but is a Poulan and I hope will be helpful to you.

HOW TO Remove Clutch & Sprocket on Poulan 2150 Chainsaw. The same procedure can be applied to many other chainsaws.

http://www.youtube.com/watch?v=zf28-ztoHfg

Oct 17, 2014 | Poulan Garden

1 Answer

Poulan 45cc chainsaw will start running with starting with choke, but will not stay running.


Sounds like the low speed fuel adjustment is out of whack....you can reset it by turning it in all the way clockwise...then as a starting point, turn it out 1 and 1/2 times, start the engine and slowly adjust the screw until the engine starts to choke out..when this occurs, turn it back in until it starts to choke again...then you need to set it somewhere in between to find the "happy medium"....thew high speed screw is adjusted after you get the engine idling properly...if you haven't messed with this then I wouldn't worry about it..unless you have poor high speed operation, then you will need to set the high speed screw...the object here is to obtain the best low to high speed throttle...if , when you throttle up the saw, the engine bogs or goes to high speed slowly , here is where you adjust to get the best throttle response...use small increments until you achieve the desired response

Apr 26, 2011 | Poulan Garden

1 Answer

Poulan pro 42cc starts when choked,take off choke runs almost 1 minute and dies.chock and restart same thing. will not stay running even when throttled.


Check the fuel filter, air cleaner, and muffler for plugging. Inspect the fuel lines for decay or other damage. If no help, remove the carburetor, disassemble and clean the interior with spray carburetor cleaner. Check the condition of the diaphragm in the lower chamber--it should be flexible with no holes or cracks. Also check the small needle valve that the diaphragm controls. Check the crankcase impulse passage behind the carburetor for gasket failure or other damage. This passage pulse-pumps additional fuel into the carburetor as it runs. Hope this helps!

Jan 14, 2011 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Wont stay running. it idles kinda high. stays running with the choke on. pull the trigger 2 giv it gas it dies.


Check the fuel filter, air cleaner, and muffler for plugging. Check the fuel lines for decay or other problems. The idle speed screw (turned CCW) will slow the engine down. Hope this helps!

Nov 08, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Poulan chain saw will not stay running after i start it. What are the carb settings ?


Hello,
a good starting point is the low speed screw at 1 3/4 turns and the high side at 1 1/2 turns. Hope it helps

May 20, 2010 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

Poulan Pro Chainsaw chain tensioner is junk -- chain now goes from tight to falling off in 1 cut. Model PP4620AVX. Looking for more foolproof mechanism!


Hammy if you scream loud enough Poulan may foot the bill for this.
Poulan “PP4620AVX” IPL (exploded parts list)
We are going to replace this page 2; item 70
http://weborder.husqvarna.com/order_static/doc/NIUS/NIUS2009/NIUS2009-PP4620AVX-545103410-952802169.pdf

Poulan “PP4620AVHD” OM
http://weborder.husqvarna.com/order_static/doc/NOUS/NOUS2005/NOUS2005_545047502.pdf
Poulan “PP4620AVHD” IPL
http://www.ordertree.com/modelinfo/PWE/PP4620AVHD-Gas-Saw/75.PP4620AVHD-Gas-Saw.1.59.1.html
With this; “Handle, Chassis & Bar Assembly” print; item 67; ChainBrake Assembly; $21.83.
You also need;
  • Item 68; Bar Mounting Nut; $0.56 each (need 2) and
  • “Engine Assembly” print; not illustrated; part number 545006011; Scrench; $9.75.
This is the configuration professionals have used forever. The only thing to remember here is to hold the nose of the bar up when adjusting and tightening the bar nuts.

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

Apr 18, 2010 | Poulan Pro Chain Saw 46cc 20"

2 Answers

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...


The best thing you can do to these engines it take them completely apart - take piston out and everything. Believe it or not, my 12-year-old son was able to do it - very few parts in these little 2-stroke engines. He polished the carbon off of the piston with a drummel tool and cleaned everything with carb-cleaner. Put it back together and it ran like a champ. Still does. It was a great learning experience for him too. The worst that can happen is you have a bunch of parts that you will throw away.

Mar 19, 2010 | Poulan Pro Chain Saw 46cc 20"

3 Answers

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:
http://www.drystacked.com
for an excellent article (but poor pix) on Walbro carburetors, but related to most all 2-stroke carburetors. Hope this helps!

Feb 18, 2010 | Poulan Pro 16-Inch 38 cc Anti-Vibration...

1 Answer

Poulan Pro pp4620AVHD chainsaw won't start


It's dirty...blow it out with air if available

Jun 11, 2009 | Poulan Pro Chain Saw 46cc 20"

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