Caution: Refer to Safety Glasses Caution in the Preface section.
| • | Damage to the webs (1) between the hub and the drive belt inner pulley | 
| • | Damage to the threaded holes (2) | 
| • | Damage to the seating surface (3) for the crankshaft balancer bolt's washer | 
| • | Wear or damage to the hub-to-crankshaft surface (4) | 
| • | Wear, chunking or deteriorated rubber (5) between the drive belt inner and outer pulleys | 
| • | Damage to the drive belt inner and/or outer pulley ribs (6) | 
| • | Wear or damage to the hub-to-crankshaft surface (1) | 
| • | Wear, grooves or damage to the hub sealing surface (2). A crankshaft balancer hub sealing surface with excessive scoring, grooves, rust or other damage must be replaced. | 
| • | Bent, damage or missing crankshaft front oil seal shield (3) | 
| • | Wear, chunking or deteriorated rubber (4) between the drive belt inner and outer pulleys | 
| • | Damage to the drive belt inner and/or outer pulley ribs (5) |