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Exhaust Port Cleaning

Level 2

Tools required: Wood or plastic scraper, Cross Head Screwdriver, 4 & 5mm Hex Wrench

Parts Required: As needed: Muffler gasket

1.Remove spark plug lead from spark plug, and remove engine cover (5 screws).

2.Place piston at top dead center. Remove muffler (A) and muffler gasket (B ).

3.Use a wood or plastic scraping tool to clean deposits from cylin- der exhaust port.

IMPORTANT

Never use a metal tool to scrape carbon from the exhaust port. Do not scratch the cylinder or piston when cleaning the exhaust port. Do not allow carbon particles to enter the cylinder.

4.Inspect muffler gasket, and replace if damaged.

5.Install muffler gasket and muffler.

6.Tighten muffler mounting bolts (or nuts) to 80-95 in•lbf (90-110 kgf•cm).

7.Start engine, and warm to operating temperature.

8.Stop engine, and re-tighten mounting bolts (or nuts) to specifica- tions.

9.Install engine cover and attach spark plug lead.