Question about Poulan Pro 42CC 2 Cycle Chainsaw, 18"

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A Poulan Pro 4218 Chain Saw; the chain comes loose after just a few cuts?

I've put new chains on and keep the oil filled, but after just a few cut the chain will become so loose that it falls off the chain bar. My model has the little asjuster wheel, so all I have to do is loosen bracket and turn wheel; it doesn't appear to just loosen a little but a-lot and falls off the bar!

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6 Suggested Answers

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Posted on Jan 02, 2017

dennisgladx
  • 52 Answers

SOURCE: Insufficient chain oiling

Sorry to tell you this but you need a new OIL PUMP but it's not a difficult thing to replace.
On the main shaft of the crank shaft under the centrifugal clutch is a spiral wound wire that matches a plastic part that is the oil pump. You can get the part from Poulan parts and it will take about 15 minutes to fix the first time eight minutes the second time.
Glad to be of assistance.

Posted on Oct 20, 2008

  • 1 Answer

SOURCE: poulan pro series chain saw 20" bearings seizing up on bar

There's a tiny hole on the front of the bar near the bar sprocket. This is used to grease the sprocket. If you go somewhere like Lowe's look in the chainsaw section and you'll find a grease tube that is specially designed to lube the front sprocket. Before lubing use a small wire to clean out any debris from the whole. Press the lube tube against the hole and push repeatedly until grease comes out from the outside of the bar. This should greatly extend the life of the bar.

Posted on Jan 09, 2009

  • 1 Answer

SOURCE: poulan pro with tooless chain tightening - chain will not stay on

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

Posted on Apr 27, 2009

  • 205 Answers

SOURCE: Poulan Pro 42cc Just Won't Cut It

The chain is directional, only cuts one way. If a new chain won't cut, it must be on backwards.

Posted on Apr 28, 2009

  • 5 Answers

SOURCE: poulan pro 20 chain wont stay tight

Take a link out of the chain. Had the exact same problem with my dad's chainsaw

Posted on Aug 13, 2009

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Poulan pro troubleshooting


CHAIN STRETCHS AS IT HEATS - KEEP CHAIN TIGHTENED CORRECTLY AND ALWAYS KEEP OIL IN OILER AND MAKE SURE IT OILS THE CHAIN. IF THIS DOESN'T FIX - REPLACE THE CHAIN. IF IT STILL HAPPENS THEN REPLACE BAR. WILL FAIL AGAIN WITHOUT OIL. POULAN WILL NOT HOLD UP WITHOUT CHAIN LUBRICATION. WORSE THAN OTHERS. IF CHAIN OR BAR OVERHEATED YOU'LL WORK ON IT MORE THAN YOU CUT. OIL IS THE KEY TO CUT WITH A POULAN!

Aug 10, 2014 | Poulan Pro PP4620AVX 46cc Gas Chainsaw...

1 Answer

Poulan Pro 42cc 2-Cycle 18'' Gas Chain Saw excess oil on chain


are you using a chain bar oil as this is a lot thicker than normal engine oil

Jul 16, 2012 | Poulan PP4218AV 18" Chain Saw

2 Answers

I have a Poulan 295. I needed to replace the chain. It is a 20" chain. There is bar oil in the resevoir. The chain will not stay on the bar (it seems loose even when fully tightened). I replaced...


If you replaced the bar AND the chain, you'll need to make sure the chain is the correct chain for the particular bar you've used. If you're only replacing the chain, you need to make sure the chain has the same # of drive links as your old chain (maybe one or two more, if you've had some removed because of chain stretch).

On that particular model, for a 20" chain, you could have a 78 OR 80 drive link chain (drive links being the part of the chain that rides in the groove of the bar). The correct drive link count is determined by the bar you've installed and should have been made clear by whoever you purchased the bar from. Some brands use an 80 drive link chain, but MOST use the 78 drive link chain.

If the bar you purchased uses the 78 drive link chain, but you have an 80 drive link chain, then no matter how far out you adjust the bar, you may not get the chain tight enough. PartsBuggy shows a listing of which bars use the 78 drive link chains here.

Aug 29, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

My Poulan Pro chain saw (model # PP4620 AVHD) doesot move B&C oil from the oil reservoir to the chain. How can I repair this?


If the ports where the oil comes out aren't clogged, you will have to order a oil pump and then take apart the saw from right underneath the bar. The oil pump is run by a worm gear that strips easily.

Aug 22, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

I have Poulan Pro 42 CC 18" Chain Saw. When I


Check to see if you have the chain oriented correctly - it is east to put them on backward without realizing it. Th3e teeth should point forward, with the anti - kickback lug in front of the tooth. Let me know if this helps!!

Nov 05, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Poulan pro model 4218 got caught in stump I was trying to cut down. Bar was bent. Went to box store where I bought the saw and bought "POWER CARE" 18A replacement bar and chain, brought it home and...


Try the easy solution first and post back if this does not solve the problem:

Insure your chain is on the teeth of centrifugal clutch sprocket correctly. It is easy to have it either on the inside of the sprocket or on the outside of the sprocket. If it is not on the sprocket teeth, it will not turn the chain.

Sep 29, 2010 | Poulan 18" Chain Saw Replbar (small Saws)

1 Answer

Chain wont stay tight


Is the chain being properly oiled? Make sure the cover fasteners are tight after adjustment. If the chain is dull or is improperly sharpened, it will heat badly causing the chain to become loose. Adjust the chain (cover fasteners finger tight) so that the chain just comes up to the lower bar, but not so tight that you can't pull the chain by hand. Make sure the teeth cut toward you on the bottom run. Run the engine at speed with the bar tip near some cardboard for a few moments, it should throw off a thin line of oil onto the board. Hope some of this helps!

Jun 23, 2010 | Poulan Pro Chain Saw 46cc 20"

2 Answers

What size chain does the Poulan Pro 4218 use?


Hi,

It is an 18" chain .The user manual is at http://www.chainsawsdirect.com/manuals/PP_3516_4218_Man.pdf

On page 6 the part numbers for the bar and the chain are shown

Hope this helps .. if so, pls leave feedback, if not - let me know!

Jan 24, 2010 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

3 Answers

I just bought a Poulan 16'' chain saw with quick adjust chain tensioning. The chain seems to loosen after a short time of use and the chain comes off. Quite disturbing.


1. It is common for a new chain to stretch. that is probably what occurred
2. I'd hold the tip of the bar 2-3" above a stump or even a news paper, rev it up for a few seconds and look for a line of bar oil. If none is visible your bar oil reservoir is empty or saw isn't oiling. If you added oil and it's not oiling return it to where you purchased it.
HTH
Lou

Sep 08, 2009 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Poulan Pro 42cc Just Won't Cut It


The chain is directional, only cuts one way. If a new chain won't cut, it must be on backwards.

Apr 27, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

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