ArboristSite.com Sponsors
 
 


261 c-m running LEAN?

Discussion in 'Chainsaw' started by MountainHigh, Oct 28, 2019.

  1. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    Just ran my saw and it started on 5 easy pulls using decomp. Ran well and I noodled a couple of logs. Restarted with 1 or 2 pulls every time when warm. Will try another cold start later today with drop start only and no decomp.

    Things are looking up.
     
    chipper1, holeycow and farmer steve like this.
  2. farmer steve

    farmer steve outstanding in my field, 5150

    Joined:
    Feb 8, 2013
    Messages:
    16,071
    Likes Received:
    119,234
    Location:
    Stihl, PA
    Good to hear. I just looked at a couple of acres of dead ash that needs to come down . Hoping to give my 261 a good work out.
     
    MountainHigh and chipper1 like this.
  3. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    That sounds like fun ... I'll be right over ;)
     
  4. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    I'll be interested to hear how your saw performs.
     
    farmer steve and chipper1 like this.
  5. farmer steve

    farmer steve outstanding in my field, 5150

    Joined:
    Feb 8, 2013
    Messages:
    16,071
    Likes Received:
    119,234
    Location:
    Stihl, PA
    Ran 2 tanks thru it yesterday. This was the first time I ran a ethanol free mix since a local gas station just started selling it. My back was acting up so I was pulling the cord a bit gingerly on start up. Took about 6 pulls initally and after warm up 1 pull. 2 pulls after I ran out of fuel on the first tank. Temps were around 50* Definitley can tell a big difference between it and the old 026.:chainsaw:
     
    Be Stihl, MountainHigh and chipper1 like this.
  6. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    Your experience seems to be about how my saw is now starting and re-starting.

    Are you running 50/1?
    16" bar?
    Stihl RS chain?

    Glad to hear it outperforms your 026!
     
    chipper1 and farmer steve like this.
  7. farmer steve

    farmer steve outstanding in my field, 5150

    Joined:
    Feb 8, 2013
    Messages:
    16,071
    Likes Received:
    119,234
    Location:
    Stihl, PA
    Stihl ultra. 90 octane. About 45:1. LOL
    18" bar with Stihl RM yellow chain.
     
    MountainHigh and chipper1 like this.
  8. KiwiBro

    KiwiBro Hold my beer and film this...

    Joined:
    Jan 28, 2009
    Messages:
    7,149
    Likes Received:
    15,098
    Location:
    Aotearoa
    Well, my 261cm gave me a few lean screams yesterday. You know, that vocal disapproval when you run the tank dry trying to get those last few cuts in. Only the tank wasn't dry. Far from it. It screamed, died and the [email protected] thing would not start again. I gave up and pulled out old faithful, Dolly. Will try the 261 again today but hopefully it's just a glitch that goes away, bc it has become my go-to saw for anything small.
     
    chipper1 and farmer steve like this.
  9. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    damn! Sounds similar to what mine did. I hope this issue is not contagious.
     
    chipper1 and farmer steve like this.
  10. NYresq

    NYresq ArboristSite Lurker

    Joined:
    May 28, 2013
    Messages:
    5
    Likes Received:
    7
    Location:
    LI, NY
    Threads like these make me appreciate my carbureted 261 that pops on two pulls and starts on two more... cold, dry, warm, same procedure every time. I am looking at new saws and was thinking the M-tronic is the way to go for never having to worry about adjusting carbs... But after reading several of these types of M-tronic nightmares, I am wondering if I should just stick with a carburetor?
     
    Tobystihl, MountainHigh and chipper1 like this.
  11. farmer steve

    farmer steve outstanding in my field, 5150

    Joined:
    Feb 8, 2013
    Messages:
    16,071
    Likes Received:
    119,234
    Location:
    Stihl, PA
    My 241 was my first mtronic. Probably have cut close to 50 cords with it . No problems. My 462 probably has about 10 cords on it again no problems except the fuel cap attachment. I'm a little nervous on the 261 since it only has about 3 tanks through it. Unfortunately carb saws will be a thing of the past in a few more years.
     
    MountainHigh, chipper1 and NYresq like this.
  12. SuperDuty04

    SuperDuty04 ArboristSite Operative

    Joined:
    Sep 4, 2019
    Messages:
    296
    Likes Received:
    423
    Location:
    In the sticks
    My 261cm has been the best running and easiest starting saw I've ever used. Wouldn't trade it for anything.
     
  13. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    Glad it works so well for you. Hoping this lean/no start glitch gets solved with something simple like a reset. :reading:
     
    chipper1 likes this.
  14. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    I'm all ears KiwiBro, waiting to hear if you can get it started without a reset.

    What mix are you using? I keep asking this as mine 'seems' happier with 50/1
     
  15. KiwiBro

    KiwiBro Hold my beer and film this...

    Joined:
    Jan 28, 2009
    Messages:
    7,149
    Likes Received:
    15,098
    Location:
    Aotearoa
    Got sidetracked today so will try it tomorrow and keep you posted. I'm running 40:1.
     
    chipper1 likes this.
  16. MountainHigh

    MountainHigh Selective Tree whacker

    Joined:
    May 2, 2013
    Messages:
    1,653
    Likes Received:
    2,984
    Location:
    BC Mountains
    that's what I was running when mine started acting up. I read in another thread somewhere here that another guy had 261 cm problems that cleared up when he went back to 50/1.

    Carburetor police monitoring our usage?! - :omg: :D
     
    Be Stihl, chipper1 and farmer steve like this.
  17. SuperDuty04

    SuperDuty04 ArboristSite Operative

    Joined:
    Sep 4, 2019
    Messages:
    296
    Likes Received:
    423
    Location:
    In the sticks
    I wonder if there is an issue with running a stronger mix, possibly fouling sensors? I've ran 50:1 premix in mine from the start.
     
    MountainHigh likes this.
  18. SuperDuty04

    SuperDuty04 ArboristSite Operative

    Joined:
    Sep 4, 2019
    Messages:
    296
    Likes Received:
    423
    Location:
    In the sticks
    Maybe use a MAF cleaner and clean the sensors would help.

    I think I'm gonna add this to my routine maintenance
     
    MountainHigh likes this.
  19. chipper1

    chipper1 Living Life to the Full

    Joined:
    Nov 5, 2014
    Messages:
    29,883
    Likes Received:
    195,103
    Location:
    GR. MI.
    What type of mix are you guys running, maxima k2 at 40:1 gave me no problems.
    Yesterday I ran a few couple thru the ms201cm, after a refill it was running a little wonky for a bit and gave me a fit starting it. I shut it off as soon as I heard it surge, filled it, hit the purge button once and it was full, pulled the cord and she fired up, but when I hit the throttle it stalled and did that a couple times, then I started it and let it idle a bit before I hit the throttle and it stayed running but it took about 20 sec for it to straighten out. After all that it never missed a beat.
     
    MountainHigh and farmer steve like this.
  20. BangBang77

    BangBang77 The chair is against the wall...

    Joined:
    Mar 8, 2018
    Messages:
    265
    Likes Received:
    423
    Location:
    Oklahoma
    I'm running ethanol free gas plus Echo Powerblend at 40:1 in my 261c and have for 3 years. I cut year around and the only issues I've had are hot start when the temps are 105F + (and only then when I don't let idle for a few seconds before shutoff or if placed directly in the sun for a while). I also run this in my newer 261c and my 441c with no issues.

    I don't think your fuel ratio is the issue. Just my two cents...
     
    Be Stihl and chipper1 like this.

Share This Page