Small Engines (Lawn Mowers, etc.): Mantis rototiller, new spark, boggs


Question
My Matis rototiller will idel, however when I go to run it, it boggs out! I put fresh fuel in it, and a new spark plug still has same problem!

Answer
Hi Michael,

Try adjusting the carb.  The high speed mixture screw is initially set at 1 & 1/2 turns out.  Then adjust it to give good acceleration and top speed, while not closing the screw more than you need to.  The low speed mixture screw is set at 3/4 of a turn out.  Adjust that, to give a smooth idle.  The 3rd screw, the idle speed screw, is set to give a low idle speed without stalling.   

If no change, I would clean and rebuild the carb.

Let me know how you make out.
Michael