Mechanical clutch for lawn tractor mower lawn mower MTD compatible DIMENSIONS: A (mm): 170.0 B (mm): 90.3 C(mm): 170.0 D (mm): 123.0 E (mm): 25.4 F (mm): 23.0 Code 122-168 Original part number reference 717-1787, 717-1787A 753-06346 MTD VR