I have 4 BR 800 TWO OF WITCH ARE SIDE PULLS FOR CONNIVENCE. THE MUFFLERS WILL NOT STAY TIGHT.
VALVES ARE ADJUSTED, SPARK IS GREAT CORRECT GAP, NEW PLUGS, AIR FILTER, NEW FUEL FILTER. IDLES FINE, GOES TO FULL POWER. EVERYONE OF THEM THE MUFFLERS FELL OFF. MUFFLERS RUINED REPLACED WITH NEW AND...