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Stihl Chainsaw oiler not working

Discussion in 'Chainsaw' started by druist, Nov 27, 2007.

  1. druist

    druist ArboristSite Lurker

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    Hi people, hope i am posting in the right forum.

    I have a Stihl M170 which i just use for cutting for firewood generally. Anyway I noticed no oil was going onto the chain, in fact no oil was coming out at all. I took the easily accessible parts of and cleaned the harder parts with an airline and a peice of wire - still no joy.

    The manual is useless as it doesnt tell me how the Oiler system works. Can anyone help out here. I have searched in vain for a diagram. I assume its blocked but i cant trace it back as i dont know where i am going.

    thanks

    drew
     
  2. aquan8tor

    aquan8tor AboristSite Guru

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    Welcome to the forum, but you probably will have better luck posting in the "chainsaw" forum. I can tell you how to fix it on a different saw, but I've never had an ms170......Good luck.
     
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  3. druist

    druist ArboristSite Lurker

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    thanks aquan8tor i didnt see a "chainsaw forum" will have another look. Do you know a site that shows diagrams of chainsaws, like a circuit diagram but not, if you catch my drift.

    ta, drew
     
  4. Lakeside53

    Lakeside53 Stihl Wrenching

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    Take of the clutch drum and clutch (reverse thread) - inspect the pump arm and worm.

    Check that the body (beneath the clutch) that hold the pump isn't scored or burned and busted though. If it is, sometimes, marine epoxy will fix this.

    The most common reason is that it's blocked... You have to take the handle off - take out screws, the external plugs and it just pulls off. You'll see a hose from the tank to the oiler- pull it out. If it's broken you've found your problem.

    Flush out the tank, hose and pump inlet with gas (careful...).

    If you need to remove the pump, it comes out though the bottom of the saw - wind in a 5mm bolt (I think) and pull it out.

    Get a service manual....


    And first make sure its not just your bar hole that's blocked... Run the saw without the bar and chain and look for oil pumping.
     
    Last edited: Nov 27, 2007
  5. druist

    druist ArboristSite Lurker

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    Thanks Lakeside. Will give that a go. I have a service manual which came with it, but it doesnt go into that sort of essential detail - unless there is a more comprehensive one that is about?? Its almost as though they dont want you to know, so you visit a Stihl dealer!
     
  6. Lakeside53

    Lakeside53 Stihl Wrenching

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    The service manual is all we have... the rest comes the hard way!
     
  7. phbrush

    phbrush New Member

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    Another Stihl (017) Oiler problem

    I'm also having oiler problems with my Stihl 017 - appears to be producing more air bubbles than oil out of the oil port. Disassembled and cleaned clutch - pump drive, checked screen, hose,etc. No oil leaks, just air bubbles out of the port. Is this a pump problem or am I missing something ?. Thanks -Pete
     
  8. Lakeside53

    Lakeside53 Stihl Wrenching

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    you're missing the hose from the tank to the pump.
     
  9. druist

    druist ArboristSite Lurker

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    Hi, dont know if you have seen the one that comes with m170 but it doesnt even tell you about the oiler let alone show you where it is. its as though they dont want you to know as its seen as a DIY home hobbyist chainsaw - which is i suppose true and certainly what i am using it for. Therefore, they expect ppl like me to take it to a certified Stihl repair shop, which will cost more than the chainsaw cost me.

    Thanks for telling me where it is, i reckon from your description i can pretty much work it out.

    What worried me though is that inside the oil reservior there is a long instrument freely moving about - any idea why that should be doing there - its obviously something? Again nothing in the manual.
     
  10. druist

    druist ArboristSite Lurker

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    Lakeside, wish i had tried to flush it with petrol (gas) first, as that did the job i think, at first nothing happened, then i blew into the oiler tank (yuck - with petrol still there), then load of gunk came out near the clutch and petrol. So all i have to do is get those bast***rd annular things back in.

    any tips for getting em in, these are 3 maybe 4 ridged annular thingys? do you just bash em? or is there a proper tool?
     
  11. Lakeside53

    Lakeside53 Stihl Wrenching

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    Just work around them with a screwdriver. Use soapy water if you need to.
     
    Last edited: Dec 4, 2007
  12. Lakeside53

    Lakeside53 Stihl Wrenching

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    You obviously don't have the workshop service manual... It covers the oil pump and all other parts in exacting detail.

    [​IMG]

    [​IMG]






    Here's two pages to help you out.
     
  13. taplinhill

    taplinhill Addicted to ArboristSite

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    Sounds like you are looking at the Owners Manual, not the Workshop Manual.
     
  14. druist

    druist ArboristSite Lurker

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    I have three manuals, an owners and two that someone kindly sent me in pdf, one of which is very indepth, but i wonder if they were scanned and that page was missed or i have missed a page.

    Thanks again Lakeside.
     
    Last edited: Dec 5, 2007
  15. druist

    druist ArboristSite Lurker

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    on a different note, can a longer bar and chain be added to this model eg 14" as opposed to 12"?
     
  16. SawTroll

    SawTroll Information Collector

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    The Service manual doesn't usually come with the saw - but the dealer should be able to get you one.
     
    Last edited: Dec 5, 2007
  17. Lakeside53

    Lakeside53 Stihl Wrenching

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    yes, but stay with the the thin keft 0.043 bar and chain - PMN.
     
  18. druist

    druist ArboristSite Lurker

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    AHHHHHHHHHHHHGGGGGGGGGGGGGGGGGGGGG:cry: :cry: :cry: :cry: :cry:

    Got it all back together and i cant get oil coming onto the chain still. When i poured petrol through the oiler it seemed as though the block had cleared; so put it all back together (thanks for the rubber buffer installation tips, hopefully i could now get em out without breaking them.

    But anyway having seen oil/gas come though the correct area i assumed all was well. I sort of clear ran it with a big white sheet of paper beneath me. So i would have saw any chain oil appear. It seems to run all right in other ways.

    Can anyone think of anything it might be? Or at least how the oiler works, then i might know why its failing, as thin fluid (petrol) will go through it, put the actual pumping doesnt. I am thinking of letting it soak overnight in petrol then flush out with chain oil before i start again.

    thanks.

    drew
     
    Last edited: Dec 12, 2007
  19. Lakeside53

    Lakeside53 Stihl Wrenching

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    If you put oil in the tank, and run it without the bar and chain, do you get oil coming out of the oiler hole?
     
  20. druist

    druist ArboristSite Lurker

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    good idea. havent tried that. should i see some, what sort of amount of oil should be coming out, its been a while since i have used it working and therefore see it working properely?
     

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