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Stihl 440 STILL NOT OILING CORRECTLY

Discussion in 'Chainsaw' started by Slackerjpt, Jan 29, 2012.

  1. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Hi all,

    I have posted previously on this issue and have yet to come up with a solution. I tried to open up the oil ports on the bar, which seemed to increase the output a bit, but still not on the chain. I ran the chainsaw wide open pointed at a cookie to see if it was slinging, what i FOUND WAS OIL EVERYWHERE BUT THE CHAIN!! (CAPS LOCKED) I did snap a few shots, I hope you can view them to see what happened. You can see in one photo the oil running down the bar, in others you can see little oil on the cookie but lots sprayed far to the right, all over the boat, as well as another pic of oil all over the cover. I am very frustrated and hoping you can help.

    MC
     
  2. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Surely the pros can help?
     
  3. redunshee

    redunshee Addicted to ArboristSite

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    If drive links are getting oil I'd say you're okay. Seems like they are from the photos. Stupid question but I assume you are using the correct bar. If you run saw w/o the bar is oil coming from the case outlet?
    Bob
     
  4. watsonr

    watsonr Aftermarket Parts Pusher

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    That thing is pouring oil! Are the chain drivers worn out? Is the bar rail clean? My bet is the drivers are worn and not really picking up the oil, but it is oiling plenty. Mine do that on some of the saws and those have worn chains. Honestly, today's chain lube is better and you don't need it to spray off like we used to in the older days of using motor oil.
     
  5. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Hey Bob, I'm using the correct bar, and the oil is coming out when reved without the bar on. I was just shocked to see all that oil running on the bar, the inside cover and yet the chain seems to have very little oil on it.
     
  6. walexa07

    walexa07 AboristSite Guru

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    That all looks great to me. I believe the oil under the cover is oil that has traveled the whole bar and come all the way back before being flung off with the tight radius around the rim sprocket.

    Waylan
     
  7. HorseFaller

    HorseFaller AboristSite Guru

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    So this might just be what I saw. Do your oil port holes go all the way through the bar? Or is that just an optical illusion?? I have a 440 and it does not do that I barely go through a half tank of bar oil to a tank of gas. I'm really jealous that yours oils like that. Clean out the bar rails and see what that does. Also what length bar you have will make a difference.
     
  8. watsonr

    watsonr Aftermarket Parts Pusher

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    The bar hole is only at the top where it matches the oil port on this type of Stihl bar and only on that one side. Excess oil runs down the chain slot until the chain drivers can pick it up and is flung off the bar at the top because of the turn at the tip. Fluid cannot make the turn and all of the excess that the chain can't carry is sprayed all over the place, that is, after it passed from the bottom of the chain (where the driver is) thru the link and off the top of the cutter. The drivers may be worn, a small amount of sawdust may be stuck in the bar groove and is stripping the oil off the driver or you can turn down the oiler.

    Look at the Oilimatic Stihl chain with oil grooves in the drivers that channel the oil up into the cutter.

    Like I said before, new bar oil is better than the older stuff we used to use and it doesn't have to flood the chain. If the chain is getting really hot, then I would turn it up until you see a small amount of oil spray off the tip. Is the chain hot after a few cuts or feel dry? Actually feel the chain to see if you have any oil residue on your fingers.
     
  9. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Hey Watson, I agree that oil is coming out, but it appears that it's hitting everything but the chain. The chain is new and seems to be dry after using it.
     
  10. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Hey Waylan, I'm questioning the amount of oil being flung in every direction, well mostly far right.
     
  11. Slackerjpt

    Slackerjpt ArboristSite Operative

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    Hey horse, you have a good set of eyes. If you look at my previous posts you will see that this has been an on going problem. One solution suggested was to open up the oil ports in the bar to allow more oil in and to also stop it from getting clogged so damn quikly. I'm running a 20 inch bar, new chain, and stihl bar oil from the orange bottle. Rails appear to be clean.
     
  12. Sagetown

    Sagetown Addicted to ArboristSite

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    Something is not right. Oil running over the rails and not being picked up by the drive links would indicate wood chips or some foreign material in between the rails at the farthest point of overflow. Below is my bar port opening, and it works great. I modded the bar on both sides.
    [​IMG]

    Note how the oil soaked residue has been slung off the chain onto the saw body. At the bottom of the bar you can see the residue filled into the bar port slot. I made it elongated to catch all the oil it can possibly get since I don't have an oil adjustment on this MS270.
    [​IMG]
     
  13. Slackerjpt

    Slackerjpt ArboristSite Operative

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    I did open the holes a bit to allow more oil into the bar. I am running a new stihl chain. When I ran the chain for the first time, it was hot as could be and dry like a $2 whore after a long night. The oiler holes in the bar also plugged up super fast! I guess I can't wrap my mind around how it is performing especially when comparing to my other, older saws.
     
  14. Sagetown

    Sagetown Addicted to ArboristSite

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    Yep; mine ran very hot also until I modded the bar ports. If you have access to an air compressor, by all means blow out the rails, nose sprocket, and bar oil ports. You shouldn't have all that excess oil all over the bar. Here's another look this bar after the mod. p.s. Sorry about the slow response time, I'm on Dial-Up.:D
    [​IMG]
     
  15. watsonr

    watsonr Aftermarket Parts Pusher

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    Right size chain to match the rail gauge? It's getting tons of oil, chain isn't picking it up. Either the drivers aren't deep enough in the slot or sawdust is keeping it from getting on the chain. Opening the bar hole will put more oil in the groove, chain still has to grab it. If it's spraying off the tip and making marks on the boat like that, its getting oil. I have saws that do that also.

    What brand bar oil are u using? Is the driver dipping down low enough when looking at it thru the oiler hole?
     
    Last edited: Jan 30, 2012
  16. Jonesy11

    Jonesy11 ArboristSite Operative

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    I agree to clean the guide rails on the bar first. Can you take a pic of the oiler hole mod you did just to kind of rule that out of the equation?
     
  17. showrguy

    showrguy Addicted to ArboristSite

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    an unbent paper clip works great for cleaning out bar rails !!!
    and who cares if ya lose it ??
     
  18. splitpost

    splitpost *********

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    Don't see a problem with anything you describe,if its slinging oil of the tip its working the way it should,if you want less oil being flung off the end of your bar turn your oiler down:cheers:
     
  19. Sagetown

    Sagetown Addicted to ArboristSite

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    That's the problem, he's not getting much oil off the tip, but you can see it's flooding over the top of the rail for a good portion of the bar. That indicates the oiler is putting out plenty of oil. There could be a mismatch of bar and chain, or foriegn material clogging the bar rail. Strange goings on there for sure.
     
  20. rupedoggy

    rupedoggy Addicted to ArboristSite

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    I think I know what is wrong. Take off the clutch. Check the worm and drive tang. They are probably good because it is pumping. Now look at the hose that feeds the hole for the bar. This is the back side and this hose blows out sometimes and send oil all over except where you need it. When you take the clutch, worm and plastic off there will be a lot of oil inside there. If an oiler is working correctly there will be very little oil in there behind the clutch. Sometimes that hose gets cut by the clutch drum or it just splits. Check it out and let us know. Mike
     

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