my mac 3200 chainsaw stop running, change spark plug and put a new fuel line on it, now it will run for awhile in half choke but not with choke off.

dwayne, August 2009

open the (L) low speed fuel mixture adjustment screw
on the carb counter clockwise to give the engine more fuel. turn the mixture screw maybe a quarter turn counter clockwise untill to the point you can open the choke up all the way. then you may have to
adjust your (H) high speed mixture adjustment screw
eather way, from an idle to full throdle to get rid of any hesitation or bog down it may have, when you quickly pull the trigger and give it the gas. you also will have to adjust your idle screw on the carb to maintain the proper rpm. hope this helps. Jimbob

jimbob, March 2011

you need to strip and clean out the carb with a low presure air line. it is not getting petrol thru one of the jets.

Derek, August 2009