Caution: Wear safety glasses in order to avoid eye damage.
- Clean the crankshaft balancer in cleaning solvent.
 
- Dry the crankshaft balancer with compressed air.
 
- Inspect the crankshaft balancer for the following:
 
| •  | 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. | 
 
|     | Important: A crankshaft front oil sealing surface with excessive scoring, grooves, rust, or other damage must be replaced.
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| •  | 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) |