THE REAR BRAKE FREE TRAVEL ADJUSTING BOLT AND NUT INSTALLED DURING VEHICLE ASSEMBLY MAY HAVE BEEN INCORRECTLY TIGHTENED. THIS COULD CAUSE THE BRAKE PEDAL TO BECOME JAMMED DURING BRAKE OPERATION.
THE INVOLVED MOTORCYCLES WERE MANUFACTURED WITH FRONT BRAKE MASTER CYLINDERS IN WHICH THE PLUNGER PISTON BORE DIAMETER WAS HONED .015 INCHES OVER MAXIMUM SPECIFICATIONS. THIS OVERSIZED BORE RESULTS IN A POOR FIT BETWEEN THE ELASTOMERIC PISTON CUP AND THE CYLINDER BORE, WHICH ALLOWS FLUID LEAKAGE FROM THE HYDRAULIC SYSTEM.
SOME OF THESE VEHICLES WERE MANUFACTURED WITH WEAK REAR BRAKE CONTROL INNER LEVER ARM AND PIVOT SHAFTS. AS A RESULT, EXCESSIVE PRESSURE WILL BE NEEDED ON THE BRAKE PEDAL TO STOP THE VEHICLE.