Need chain adjustment wheel part # for poulan pro model pp4620apx chsain saw

H I ONE quarter turn L one turn then adjust the idle.

Adjust the low side out another quarter turn first before messing with the idle screw.

You can find just about any item needed to fix you chainsaw on www.ereplacementparts.com

I am not sure if you have the Poulan 260 pro, but I have attached the link from e replacement parts for that saw.

http://www.ereplacementparts.com/poulan-260-pro-chainsaw-parts-c-16962_17133_202439.html

Good luck in fixing your saw.

First, RTFM- read the manual. Lost it? No problem, download it from Poulan PRO website page for PP4620avx. Pick a version you like, save and read it. Google is your friend.
Chain Adjustment Part cut and pasted as follows:
Adjusting the tension:
Chain tension is very important. Chain stretches during use. This is especially true during the first few times you use your saw. Always check chain tension each time you use and refuel your saw.
1. Lift lever on bar knob and turn counter-clockwise 1.5-2 turns to loosen clutch cover.
2. Turn adjusting wheel (downward direction) to tension chain until chain solidly contacts bottom of guide bar rail. Lift tip of guide bar while adjusting tension. Tighten chain Adjusting Wheel
3. Use a screwdriver to move chain around guide bar to ensure all links are in bar groove.
4. While lifting tip of guide bar, tighten bar knob securely (clockwise).
Hand tighten only.

Be careful not to destroy the adjustment mechanism. When it breaks, go for a clutch cover with the simple adjuster that needs a "scrench". Longer term, learn how to search this info. Saves time. Now you can work on sharpening chains- very important.

Manual page:
http://www.poulanpro.com/ddoc/PPOO/PPOO2006_USen/PPOO2006_USen_PP4620AVX_952802146.pdf

are you talking about the magneto to the flywheel gap i just use a piece of paper between the two and tighten it

the adjustment screw near the end of the bar( next to the engine) needs to be turned in to tighten the chain just don't tighten it to much

Following is a link to a Poulan Parts Dealer that has the adjusting wheel. I also included a pdf of break down parts list for your model. Please rate the answer on its value of help. Good Luck have a great weekend.

Order Part
Parts List PDF

Ordertree.com (Poulan authorized parts outlet)
http://www.ordertree.com/cms/contact-us/9790.html
Telephone - For Handheld or Wheeled Products contact us at 1-877-500-7499
I looked at "Gas Chain Saw PP4218 Types 1 & 2" IPLs. there are no carburetor illustrations. I suggest you contact them by phone. Please have your saw and a supply of common hand tools within easy reach before calling. HTH
Lou
There are often multiple carburetor manufacturer's used on the same model. They can easily help you determine what is on your saw.

Their not the best saws but make sure the nuts holding the bar and cover on are tight after adjusting chain sometimes improper cutting will continue to kick chain off bar.

i have a 4620 poulan that had the same problem. use it for 10 minutes, spend 15 minutes reinstalling the chain. i sent poulan an email threatening to sue them and they decided to send me the parts to change it over to the old style for free. try poulan.com