Idle surge
Air to Gas mix is not correct. The carb will need to be cleaned very good and all new carb gaskets in place to work right. It only takes 1 stopped up port or a slight air leak due to dry gasket to cause your problem. Hope this will help.
.
SOURCE: won't run on idle and surging when revived up
Most newer carbs can be VERY difficult to get completely clean. It sounds dumb, but if you will take it apart and boil it on the stove with a couple of doses of cascade or electrasol automatic dishwasher detergent. (powder is best) for 10-15 minutes, it'll be spotless.
SOURCE: Toro snowblower///// tecumseh# on motor is H35-45598R SER 5283B
Usually that is a sign of the carb not being adjusted right. Run it at full throttle and adjust the main mixture needle (usually on the bottom) until it runs the smoothest. Set it in the middle of the range where it runs smooth. Then set it down to idle and adjust the idle mixture until it runs smooth at idle. Accelerate it rapidly and if it bogs or hesitates turn the idle mixture a little leaner (clockwise) and try again until it works right. That should get you very close. Try tweaking it a bit from there. as the microscopic specks clean out of it, it may need more adjusting.
217 views
Usually answered in minutes!
×