K1-LMB Genuine Walbro LMB Carburetor Repair Kit Tecumseh 31390 K1-LMB Genuine Walbro LMB Carburetor Repair Kit Tecumseh 31390 29155, 29157, 30359 & 31390 and Stens 520304 LMB-118, LMB-120, LMB-120, LMB-133, LMB-145