SERVICE BULLETIN SUPERSEDES SB 36-809 DATED DEC. 1994. A REVISED SETTING OF THE FRONT WIPER MOTOR LINK ARM HAS BEEN INTRODUCED ON PRODUCTION FROM VIN 854-166000, 855-70000. WHEN A WIPER MOTOR IS REPLACED ON ANY 850 THE NEW MOTOR SHOULD BE SET ACCORDING TO THE FOLLOWING INSTUCTIONS. THE REVISED SETTING PARKS THE MOTOR ARMATURE IN THE OPTIMUM POSITION CARBON BUILD UP AND EXTENDING MOTOR LIFE.