H edge ClipperO peratOr's Manual21Exhaust Port CleaningLevel 2.Parts Required: As needed: Heat Shield1. Remove spark plug lead from spark plug, and remove engine cover.2. Place piston at top dead center. Remove muffler (A) and heat shield(B).3. Use a wood or plastic scraping tool to clean deposits from cylinderexhaust port.IMPORTANTNever use a metal tool to scrape carbon from the exhaust port.Do not scratch the cylinder or piston when cleaning the exhaustport. Do not allow carbon particles to enter the cylinder.4. Inspect heat shield, and replace if damaged.5. Install heat shield and muffler.6. Tighten muffler mounting bolts (or nuts) to 80-95 in•lbf(90-110 kgf•cm).7. Install engine cover and attach spark plug lead.8. Start engine, and warm to operating temperature.9. Stop engine, and re-tighten mounting bolts (or nuts) to specifica-tions.aB