[. . . ] * When current speed does not appear, short-circuit the contact on the back with metal. ----- Is there anything on the contact of the main unit or of the bracket?----- Are the marking line of the sensor and the center of magnet matched each other? [. . . ] Choose a band that fits the fork diameter (S size for up to 24ø, L for oversize). Insert the band-B into the slit of the band-A, and put the rubber pad inside of the band-A(fig. Adjust the length in order that the screw-fastening part of the bands are parallel when mounted to the fork(fig. Mount the adjusted bands to the fork along with the sensor, by temporarily tightening the screw(fig. Align the magnet's center and the sensor's marking line(fig. 12), and make sure of 2mm clearance between the magnet and sensor (fig. Loosen the wire in the area marked with the arrow so that the wire does not hinder handlebar operation. · Use either 1mm- or 2 mm-thick pads if necessary, according to handlebar diameter. · Slide main unit onto the bracket from front until it clicks into position. 16) MAIN UNIT PREPARATION The following must be completed before operating. (1) How to measure wheel circumference (L) of your bike (Fig. 4) Put a mark on the tire tread and ride the bike one full wheel revolution. Mark the start and the end of the revolution on the ground and then measure the distance between the two marks. Or, the "Selecting Values Cross Reference Table" tells you an approximate circumference according to tire size. L Fig. 4 (2) Setting Speed Scale Preform all clear operation. Km/h and mile/h are alternately displayed with each press of S/S button. [. . . ] · In ODO mode --------------------- Wheel circumference · In mode ----------------------- 12-hour clock · In TM, DST or AVS mode ----- On/off the Auto function AUTO (AUTOMATIC START/STOP) FUNCTION DST AUTO Reset Operation: (Fig. 2) Select any mode except ODO, then press M button and S/S button simultaneously. (When done in ODO, registered wheel circumference will be displayed. ) RESET All Clear Operation: (Fig. 3) When M button, S/S and set buttons are pressed simultaneously, all data stored (ODO, speed scale, Wheel circumference and clock time) is erased. This should only be executed after replacing battery or when irregular display occurs due to static electricity, etc. [. . . ]