OutdoorKing Repair Forum Forums Repairs and Maintenance Questions On Hand Held Blowers/Vacuums McCulloch Blowers & Vac's MC Culloch Super Airstream IV Gas Blower

On my blower carby there is only two screws to adjust compared with the MCCulloch Brushcutter carby where there is three screws. Is there a different procedure to set the screws on the blower?

Those two screws are low and high speed mixture adjustments. You can see on the lever attached to the throttle butterfly (just above the mixture screws) the tang which would normally rest against the idle speed screw, but there is no idle speed screw, and no boss on the carburetor body to screw it through. Instead there is a big block holding the throttle pin: the position of that block sets the idle speed. I don't know how they get acceptable idle speed control that way, but it seems they do.

Thank You. So is setting the 2 screws the same procedure (with difficulty) as with the 3 screws like on the brushcutter.

Yes, same procedure and probably the same challenges.

Yes thanks, plenty of trial and error.