Part no Description weight CR025-004-001 Upper cheek plate 86.3 CR025-004-002 Lower cheek plate 50.8 JW40A1600 Front frame 1187.1 JW40AW1713 Jaw 2297.6 JW40AW1714 Rear frame 773.9 JW40AW1717 Flywheel 575.7 JW40AW1718 Pulley 297.5