In loving memory of Kenis D. Keathley 6/4/81 - 3/27/22 Loving father, husband, brother, friend and firewood hoarder Rest in peace, Dexterday

Husqvarna carb tune ?’s

Discussion in 'Chainsaws and Power Equipment' started by Chud, Mar 27, 2021.

  1. Chud

    Chud

    Joined:
    Aug 15, 2020
    Messages:
    7,215
    Likes Received:
    53,672
    Location:
    NC
    I picked up a 371 a few weeks ago and it was idling high and chain was creeping so I backed out the L and T and it sounded better and stopped the creep. The L screw came to a stop. Is there a limiter on how fat you can make L? It’s idling at 2800 to 3000. It’s revving out to 13,200. This may be recommended peak rpm, but I’m a Stihl guy and it sounds unsustainable. there is a limiter on the H screw that will not let me back off H anymore.
    I noticed the oiler screw is counterclockwise to increase oil, that is opposite Stihl. I don’t see how the carb screws could be opposite, but why would counterclockwise be limited? I know why lean would be limited, but why limit richening the mix, especially if it’s turning 13,200? I can see the white plastic piece limiting movement on H. Is it ok to pull the plastic tubes and limiters off? It’s a pain to find the screws through the tubes. I have to lay the saw on it’s side to get at H.
    Throttle response is good and it’s good in the cut, just trying to figure out why I can’t go further counterclockwise on L and H
    Do I need to add pics?
     
    tamarack, M2theB and Sandhillbilly like this.
  2. Sandhillbilly

    Sandhillbilly

    Joined:
    Mar 8, 2019
    Messages:
    4,256
    Likes Received:
    30,685
    Location:
    North central Nebraska
    No need for pictures, that’s just the huskies are engineered, total pice of garbage. I’ll unburden you of it, how does $50 sound :emb:
     
  3. Chud

    Chud

    Joined:
    Aug 15, 2020
    Messages:
    7,215
    Likes Received:
    53,672
    Location:
    NC
    Sounds about 8 c notes short. :makeitrain"
     
    brenndatomu, Sandhillbilly and M2theB like this.
  4. Eric VW

    Eric VW Moderator

    Joined:
    Jan 6, 2015
    Messages:
    24,535
    Likes Received:
    141,452
    Location:
    US
    brenndatomu, MikeInMa and M2theB like this.
  5. M2theB

    M2theB

    Joined:
    Jan 13, 2017
    Messages:
    3,004
    Likes Received:
    19,226
    Location:
    Central Massachusetts
    My experience is if it’s limited anywhere by the factory, it’s limited everywhere. Meaning H and L.
    It’s fine to pull the limiter and ritchen it, but if you need to it’s because there is another source letting more air through. Muffler mod, air leak, etc.
    13200 sounds ok though
    According to spec, you have a little margin to lean it. 13700 is target, oem
     
    Last edited: Mar 27, 2021
  6. Eric VW

    Eric VW Moderator

    Joined:
    Jan 6, 2015
    Messages:
    24,535
    Likes Received:
    141,452
    Location:
    US
    FHC info share- love it!
     
    MikeInMa and M2theB like this.
  7. huskihl

    huskihl

    Joined:
    Jan 30, 2016
    Messages:
    3,716
    Likes Received:
    21,396
    Location:
    Michigan
    Limiters are there for the epa.

    If you rotate the limiter, you’ll see where it lines up with the slot. Thread a drywall screw down into it, turn the limiter backwards until it lines up again, and pull it out with vise grips. Trim the tab off and reinsert it where the slot heads line up. If the plastic is wallowed out round, heat up the end of a tuning screwdriver and push it all the way down into the metal jet slot.
     
  8. Eric VW

    Eric VW Moderator

    Joined:
    Jan 6, 2015
    Messages:
    24,535
    Likes Received:
    141,452
    Location:
    US
    More great advice!!!
    FHC is the best- and no one can convince me different!
     
  9. Chud

    Chud

    Joined:
    Aug 15, 2020
    Messages:
    7,215
    Likes Received:
    53,672
    Location:
    NC
    Ok thanks for the help. I’ll take a closer look at the limiters and removing them. The muffler does not appear to be modified. One outlet on top. I’ll check for leaks also
     
  10. The Wood Wolverine

    The Wood Wolverine

    Joined:
    Aug 23, 2015
    Messages:
    18,791
    Likes Received:
    120,873
    Location:
    Gettysburg, PA
  11. Chud

    Chud

    Joined:
    Aug 15, 2020
    Messages:
    7,215
    Likes Received:
    53,672
    Location:
    NC
    It may be me not being used to a screaming saw. I’ll shove the plugs in deeper.
     
  12. M2theB

    M2theB

    Joined:
    Jan 13, 2017
    Messages:
    3,004
    Likes Received:
    19,226
    Location:
    Central Massachusetts
    Me 2
     
  13. Sandhillbilly

    Sandhillbilly

    Joined:
    Mar 8, 2019
    Messages:
    4,256
    Likes Received:
    30,685
    Location:
    North central Nebraska
    I had to try!
     
    The Wood Wolverine and Chud like this.
  14. JCMC

    JCMC

    Joined:
    Dec 15, 2014
    Messages:
    1,601
    Likes Received:
    10,119
    Location:
    Just outside of Shushan, NY
    :yes:
     
    Eric VW likes this.