Tecumseh 640349. Oregon Equipment Replacement Parts are designed for various applications to service and repair lawn and garden equipment. This extensive selection of top quality parts include premium lawn mower and edger blades, string trimmer line and heads, air filters, oil filters, fuel filters, carburetor parts, belts, and much more. These genuine OEM parts are designed to meet the exact requirements and extend the life of your lawn, garden, and landscape equipment.