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Oil failure on Ryobi PNC 4545 chainsaw

Regular failure of oil supply on my 4545 chainsaw, Have cleaned out the oil tank with fuel and then refilled wiyh oil, this solved the problem for about 20 minutes and then the problem returned. Anybody know if there's a known problem with this unit or can offer a solution.

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  • Ian Fairweather Jan 19, 2009

    Thanks Bill, Your vacuum idea certainly seems to have merit, I'll check that.

    Oil level has always been adequate and cheched on every re fuel, when re filled with oil, (not that it would have gone down much because it isn't using any!) it still doesn't work. I have , after removing all the necessary parts, blown compressed air back through the outlet hole, this worked but again only for a short while.

    I will also check the pick up tube to see if its falling the wrong way, I'll post a response after I check.

    Thanks for your suggestions.

    Ian

  • Anonymous May 09, 2009

    It is nothing to do with vacuume or blocked oilways! we two with the same problem!!!

  • bczerkie May 11, 2010

    If you loosen oil cap / retighten it does it work for another 20 minutes. Possibly forming a vacuum. Actually on the 20 minutes I'm guessing it's normal use, not severe use where you could be out of oil? Is the oil pick-up located on the bottom of the tank? not flipped upward? When it stops oiling, what level is oil at? if you refill it to the top does it work again,( do this at different check time then first one listed) possibly indicating a broken hose which would be in the bend at about half a tank. Age on saw?

    Check these and post. Bill

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It sounds like you have a contaminated oil source. I'd buy a new bottle, clean the tank again, and see if things improve.

Posted on Jul 09, 2009

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I get asked this question a lot , im gonna have to make a video on this subject someday .
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next dump out entire oil tank and wash out with kerosene (you'd be surprised what I seen come out)
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Ryobi chainsaw 4545 automatic chain lubrication not working


That number you provided does not cross to an IPL (exploded parts list) here:
Homelite/Ryobi.com
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
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Oil System Plugged.
A blunted, hooked piece of wire can be used to pull the hose in the oil tank out. I recommend the filter be replaced. Work your way through the linkage cleaning and replacing any defective parts as you go. Carefully check the hoses for cracks especially at connections. If equipped with an oil pump it is usually behind the clutch (probably left handed thread). The saw can be operated without the bar and chain to verify oiler operation. Please make extensive notes & some digital pictures will help during reassembly. GL
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Same problem as olliee69


Bar oil is delivered to the chain threw a port, usually at the top side of the bar. I recommend removing the bar, apply air pressure to the tank that holds the bar oil. It may flush out debris in this port.

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Ryobi Chainsaw - PCN 4545


Ryobi boasts a two year warranty. Have you contacted anyone about a warrantied repair?

An IPL (expanded parts list) for your saw with any oil system detail can be found here:
Homelite/Ryobi.com
https://www.gardnerinc.com/recons/disclaimer-lg.php - Agree; Choose “Product Line”; “Select OEM” & “Select Catalog” both to “Homelite Consumer Products”. A drop down list appears; self explanatory from here.
The numbers Homelite & Ryobi use don't match the numbers everyone posts. A careful inspection of your saw should find something that matches.

Oil System Plugged.
Remove the clutch cover, bar and chain. Clean the oiler hole and channel. Start the saw and see if it oils when revved up. If yes reassemble your saw.
If no a blunted, hooked piece of wire can be used to pull the hose in the oil tank out. I recommend the filter be replaced. Work your way through the linkage cleaning and replacing any defective parts as you go. Carefully check the hoses for cracks especially at bends and connections. If equipped with an oil pump it is usually behind the clutch (clutch is probably left handed thread). Please make extensive notes & some digital pictures will help during reassembly. GL
Lou

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