2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 115Get this manual

2002 Yamaha YFM660 Grizzly factory service and repair manual, Page 115

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CLEANING THE SPARK ARRESTER Tap

the tailpipe lightly with soft-face hammer or suitable tool, then use wire brush to remove any carbon deposits from the spark arrester portion of the tailp