I have a McCulloch 438 Chain saw and cannot get it to rev on load! It now starts ok but will cough to a stop after several seconds and if you give the throttle a squeeze is coughs and conks out. Does anyone have any solutions or ideas; What do the 'L' and 'H' gagues do on the carb?
Thanks

Tim in France, December 2010

Hi

I have exactly the same problem with mine. I see no one has replied on this forum. Did you solve it elsewhere?

thanks

Norm, March 2011