Hi, I have a Mac-3200 and need to know where to set the 3 carb. screws at. T, low and high I don't have a manual Thank you. Z-man

asked by

on

27 Nov, 2015

  • 81%
    Solved this issue
  • 93min
    Time to fix
  • 74%
    Recommend to DIY
Need a faster answer?
Most guys adjust them 'by ear'. Warm up the saw (hopefully you can get it to start), and set the high speed by opening the screw until it sounds like it is 'burbling' at wide open throttle. DO NOT adjust until it is screaming at its highes attainable rpm !!!! If you do, the mixture will be so lean it will damage the saw under repeated heavy load. Leaving it 'burble' at WOT (wide open throttle) will ensure that proper lubrication will be available in the cut. Under load, the burble will disappear and the saw should pull strong and not overheat, damage the piston or score the cylinder wall.

Next set the low speed screw until there is no hesitation in rpm increase when the trigger is pulled. Some suggest setting the low speed first then the high speed so you may have to readjust the high speed once the low speed is done.

The idle screw should be adjusted to where the chain is NOT rotating the guide bar at idle. If it continues to move, the idle is too high.
SHARE YOUR EXPERIENCE
  • Were you able to resolve it?
    Yes No
    Awesome !
    Ok
  • How long did it take to fix?
    Good to know
  • Is it better to DIY or Repair?
    DIY Repair
    Great
    Got it
Instant Repair Help
over the Phone or Video