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General Product Question

    Fred Sims
    Chainsaw not oiling the bar/chain. I have a Husqvarna 440e...
    General Product Question posted March 9, 2015 by Fred Sims 
    5808 Views, 5 Comments
    Question:
    Chainsaw not oiling the bar/chain. I have a Husqvarna 440e chainsaw with 18" bar. I just tried to use it for the first time (it has been sitting in the original box in a closet for probably 5 years or so, never used, never had the bar and chain installed previously nor any fuel, or oil introduced). Oil reservoir filled with clean SAE 30 oil. I also oiled the bar manually before attempting to start the first time. Ran it for < 5 minutes at lower speed. Turned off. Placed a piece of cardboard in front of the chain per the manual and restarted. No oil showing up on the cardboard. Revved engine to moderate speed. No change. Removed bar, could not see an evidence of oil in the 1" slit (presumably the oil pump discharge) above the bar. This chainsaw does not have an oil rate adjustment as best as I can determine. Also, I think this model, e440, may have had some changes in later versions, although I don't know what they might be. ANY IDEAS on the oiler issue? Try Husqvarna chain oil, prime the pump some how?
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    Answer

     

    • Eugene Rounds

      The oil pump is self priming normally and is the non-adjustable version. One note the oil pump does not pump unless the chain is moving as it is driven by the clutch drum.

      It does sounds like the pump is not working from the above. To check oil will remove the clutch assembly, the clutch drum, the oil pump drive gear, and the chain guide plate. Once you have access to the oil pump it can removed easily. One note here there is a small needle roller pin that might be missing that keeps the oil pump piston in the pump cylinder. If it is missing the pump will not work properly.

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      • Fred Sims

        Thanks for the original reply.  Side tracked for AWHILE ....I eventually removed the bar from the ChainSaw (440e) and replaced the chain oil with Husqvarna chain oil.  After 1-20 sec after starting the engine, the oil was coming out of the oil "pipe" slot in the main body of the chain saw.  I thought I was on my way - NOT. With the bar and chain re-installed, the chainsaw would not spray any oil (or quite negligible amount) on a piece of cardboard. Oil may have been running down to the bottom of the chainsaw main body, but not conclusive. I checked the 18" bar part number with a local dealer.  The first part number he gave me did not match, but when I double checked with him he gave me a number that matched what I have (5089261-72).  This chainsaw offers either a 16" or 18".  All through this, I had not cut any wood with the saw, so should not have been any plugging, etc.  I have done some minor cutting since this, manually squirting some oil on the chain, and it cuts fine.  So it does not seem to be an issue with the chain/installation.  Any new thoughts out there appreciated.

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        • Eugene Rounds

          I would still remove the clutch and clutch drum check the pump driven gear has the small roll pin in place. I personally have installed a new pump and forgot to reinstall this pin. The result was low volume of oil being pump to bar and chain even though oil was shown to pump without a bar installed. Just a thought...

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    • Karla

      Fred,

      If its cold outside where you are the sae 30  weight oil may be too heavy for the winter, If you have a warm spot indoors, like above 70 degrees, I would bring the chainsaw indoors for a day and let the oil warm up, and then the next day try it outdoors. Or you could pick up a quart of Husqvarna "Winter weight" bar chain oil, dump the sae into a container, and fill with the winter weight oil.

      I have also heard of individuals thinning the motor oil with a little Kerosene but not sure of the mix probably like 8 oz oil and 2 oz kerosene, but again I'm not sure of the mix. 

      Also as a test, I have used  WD40, remove the bar and chain and make sure the area where the bar chain oil would come out at is clean, and clear of debris, usually a small 1/8" diameter hole, take the WD40 can with squirt straw attached and spray a second or two of oil into the hole. Now turn the clutch sprocket by hand in the direction the chain travels, typically clockwise. Watch the little port hole and see if droplets of the WD40 comes out of the hole as you manually turn the sprocket. If it does then the pump is working.

      I hope this helps,

      Karla 

      PS. I am Not a Husqvarna Representative or a Repair Service, just an Experimental chainsaw person

       

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    • Karla

      Fred,

      Its good that you have oil coming out of the pump during your test without the bar and chain, However you may not be getting the full volume of oil that you need to get the bar really oiled.

      Just a thought, and can't remember If you said that you had removed the clutch and drive sprocket or not, but I would remove the  clutch and drive sprocket and Inspect the worm gear (Part #5) in the diagram that Eugene provided, Make sure both the gear side is in good condition, with no stripped gear teeth, and also check the back side of this gear, and you will see a notch which mates with the sprocket drum, I have seen where when someone put the sprocket drum back on, they did not get the worm gear notch properly engaged with the drum sprocket, this is very important, and if not engaged properly will result in the drum not properly turning the gear.

      Also, a quick primer on how the oil system works, on some chainsaws the oiler is either fed from a separate oil pump, or an oil pump  which is directly connected to the crankshaft by a gear so that whenever the engine runs (idle or full speed the oiler is pumping. However on most Husqvarna Chainsaws the oiler is only pumping when the drive sprocket drum is turning, and this is because of that worm gear (part #5). So when the chainsaw is idling and the chain is not moving, No Oil should be pumping, As the chainsaw speed is increased the oil pump will also turn faster, and at Wide Open throttle the oiler should be running full speed, However If you have a problem with that worm gear, then this won't happen.

      Also when you perform your oil spray test, you should point the bar down (maybe 30 degrees down)  towards the cardboard on the ground, and give the throttle a good 5 second or so wide open throttle, in order to see a good spray of oil on the carboard, and I am assuming that is how you are doing your test..

      Also while you have the clutch off, I would clean the oil pump up, since its right there behind the metal plate, and check out the oil pump, that it looks like all the parts and pieces are all together.

      I hope this helps, and please keep me posted on your results

      Karla

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