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Stihl 025 won't idle - what carb or kit?

Discussion in 'Chainsaw' started by dboyd351, Apr 10, 2012.

  1. dboyd351

    dboyd351 AboristSite Guru

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    A friend came over tonight and we cut a little wood with his Stihl 025. It would start and run fine, but would not idle. He said it hasn't idled for awhile and when he took it to the Stihl dealer they said something about they couldn't get a rebuild kit for it, so he just lives with it dying every time you let off the throttle. Every time it dies he drop starts it with his finger on the throttle to keep it running!!!:msp_w00t:I looked it up online and there is no shortage of carbs for it, but I see some are WT 215s and some are 286s. The saw is supposed to be an 1985 model.

    Does anyone know which carb is the correct one for this saw? I love the way Stihl won't post IPLs online. Maybe I should go to the search for manuals thread.
     
  2. watsonr

    watsonr Aftermarket Parts Pusher

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    yep, beg for manuals and just ask your friend to look at the numbers..... easy as pie. You play with the low or idle screw, I'd try that first.
     
  3. dboyd351

    dboyd351 AboristSite Guru

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    Thanks. I know you're right. It is kind of hard to explain this to him. He is very old school, doesn't have a computer at all and if the dealer tells him something he just accepts it. I'd like to get his saw running right, though. Phil on the beg for manuals thread came through with the manual and IPL. Now I've just got to get my hands on that saw and look up some numbers to see which carb it uses - could be the 215 or the 286.

    Thanks for the reply.
     
  4. sun64

    sun64 ArboristSite Operative

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    Stihl 025 Carb

    Hi, the carbie you need is the Walbro WT 215 for the 025 model.
    The 286 is for the Stihl ms250c model which has the intel carb on it. The Stihl ms 250c has a primer bulb on the side to make starting easier.
    I did a fair bit of reading on this as I have just purchased a Walbro WT 215 to fit to a Stihl ms 180.
    The 180 has no primer bulb and has only one adjuster screw which is why I want to fit the next size up carb.
    After a few mods it will work fine.
    Hope this helps
     
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  5. dboyd351

    dboyd351 AboristSite Guru

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    Thanks for the input. That explains some things. The IPL I got may have been for several models, thus the listing for 2 different carbs. Glad I found that out before I ordered one!
     
  6. watsonr

    watsonr Aftermarket Parts Pusher

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    Before you spend anything, try and tune the low setting. It may be that simple, a small twist and it may run perfect. A carb kit can be had for under $10, new carb $30+ and it actually may not fix your problem. No explanation required, tell him he may be throwing his money away without trying to tune the saw first, 5 minutes of your time will tell.

    Bring the saw across the bridge and I'll do it for you if your not sure.
     
  7. w8ye

    w8ye Addicted to ArboristSite

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    I bought a new twin needle carb for my 025 at the local Stihl dealer and it was $20 + change and tax
     
  8. steve316

    steve316 ArboristSite Operative

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    won't idel

    If the carb r&r dosen't fix the problem.Pressure test as it may be the crank seals,as this was the problem on mine. good luck Steve
     
  9. watsonr

    watsonr Aftermarket Parts Pusher

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    The saw runs good at WOT per the OP... so that tells me that the rubber gasket/fuel pump inside the carb is working. Typically a carb dies when you floor it meaning it needs more fuel and points directly to the carb/lines/filter and sometimes the vent. This one doesn't idle, if it needed a carb kit it would stumble on the WOT transition. The low isn't working... it's either plugged up with debris or not adjusted correctly. Either way a five minute check...... sounds like you'd prefer to spend $20+ on a problem that may cost nothing to fix.

    My offer to make the adjustment stands, bring it across the bay bridge and I'll do it for you. That new carb still needs tuned and may not cure the problem.

    Air leaks make the saw run at high idle.
     
    Last edited: Apr 11, 2012
  10. dboyd351

    dboyd351 AboristSite Guru

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    I don't want to spend anything on it if it can be fixed by turning up the idle screw or doing a low speed adjustment. If it's not those things, I'd try a carb kit first, but I think you're right, it probably needs an adjustment, or maybe a good cleaning. My primary problem is convincing the saw's owner it can be fixed, since he trusts the shop that told him they can't make it idle and they couldn't get a satisfactory rebuild kit or replacement carb. If I take the carb apart, might as well put in a rebuild kit, since the saw is 25 years old. My biggest problem is convincing the owner to let me fix it, despite what the shop said. I don't think drop starting a saw with your finger on the trigger is a good idea.

    I appreciate your offer. Where do you live? You mean the Bay Bridge or the CBBT? I'm MUCH closer to the latter. PM me if you'd like.
    David
     
  11. watsonr

    watsonr Aftermarket Parts Pusher

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    I'm in Virginia Beach. Drop starting a saw with your finger on the trigger was the only way to start old saw's.. He's old school!
     
  12. Fish

    Fish Account Hold

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    It also should be said to closely inspect every inch of the fuel line, they are well known for cracking.
     
  13. dboyd351

    dboyd351 AboristSite Guru

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    No doubt about that.
    I can easily start his saw drop starting it, or with it on the ground, without touching the trigger. It just won't keep running because it won't idle. Maybe I'll give you a shout if he lets me work on it and I have trouble. I do appreciate your kind offer.
     
  14. dboyd351

    dboyd351 AboristSite Guru

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    Thanks for the advice, Fish. It is certainly old enough that could be an issue, just like all those old Poulan micro/XXV/2000s (roughly the same vintage).
     

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