9. Maintenance

F32

F33

4. Spark plug (F32)

Clean the electrodes with a wire brush and reset the gap to 0.65 mm as necessary.

Champion: CJ-7Y

or

NGK: BPM7A

5. Sprocket (F33)

Check for cracks and for excesslve wear interfenng with the chain drive. If the wearing is found obviously, replace it with new one. Never fit a new chain on a worn sprocket, or a worn chain on a new sprocket.

6. Spark arrester

Remove the front Cover of the muffler and inspect the spark arresting screen. Brush off Carbon deposits as necessary. Replace if damaged.

NOTE

When servicing the spark arrester, refer to the Service Parts List supplied with the unit for its location and correct assembly order of parts.

Be sure to use a correct tool for the muffler nuts. The nuts are tightened firmly, and the use of inadequate tool will damage them.

7. Front and Rear dampers

Replace if adhered part is peeled or crack is observed on the rubber part.

Replace if the inside of the rear damper metal has been beaten by the stopper bolt and the clearance of the metal increased.

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RedMax G621AVS manual NGK BPM7A