OPERATION SECTION 1 Page 33 BELT TENSION CHART (kg) *Adjust used belts to the values in this column. if below minimum. re-tension to maximum. NOTE: A belt is considered used if it has been in operation for at least 10 minutes. BELT TENSION - CHECK AND ADJUST * Do not use Part No. ST-1274 Belt Tension Gauge on v-ribbed belts. The use of the Part No. ST-1274 Gauge on v-ribbed belts will result in an incorrect adjustment. Refer to the Belt Tension Chart for the specification and the correct gauge for belt tension adjustment. If there is insufficient space to use a gauge. ilse the deflection method described on Belt Tension-Check. Measure the belt tension in the center span of the pulleys.