3. INSPECTION/ADJUSTMENT MXU 300/250 SPARK ARRESTER CLEANING (OFF ROAD) Be sure the exhaust pipe and muffler are cool before cleaning the spark arrester. 1. Remove the bolt (1). 2. Remove the tailpipe (2) by pulling it out of the muffler. 3. Tap the tailpipe lightly, then use a wire brush to remove any carbon deposits from the spark arrester portion of the tailpipe. 4. Insert the tailpipe into the muffler and align the screw holes. 5. Install the bolt and tighten it. 3-26