Warning: Refer to Safety Glasses Warning in the Preface section.
| • | Loose or improperly installed crankshaft balancer front groove pin (1) |
| A properly installed front groove pin should be installed until flush or below flush with the face of the crankshaft balancer. |
| Note: A crankshaft front oil sealing surface with excessive scoring, grooves, rust, or other damage must be replaced. |
| • | Worn, grooved, or damaged crankshaft front oil sealing surface (2) |
| Minor imperfections on the crankshaft balancer crankshaft front oil seal surface may be removed with a polishing compound or fine grade emery cloth. |
| • | Worn, chunking, or deteriorated rubber (3) between the hub and the outer ring |
| • | Worn or damaged keyway (4) |
| • | Worn or damaged bolt hole threads (5) |