Yamaha TMAX 2020 Service Manual

3-21PERIODIC MAINTENANCE4. Install:• Drive beltRefer to “BELT DRIVE” on page 4-94.• Drive belt upper guard and lower guardRefer to “REAR WHEEL” on page 4-30.EAS32399DRIVE BELT TENSIONChecking the drive belt tensionWARNINGEWA13120Securely support the vehicle so that there isno danger of it falling over.NOTICEECA25750A drive belt that is too tight will overload theengine and other vital parts, and one that istoo loose can skip and damage the swing-arm or cause an accident. Therefore, keepthe drive belt tension within the specifiedlimits.TIPMeasure the drive belt tension when the drivebelt is at room temperature, and when the drivebelt is dry.1. Stand the vehicle on a level surface.TIPPlace the vehicle on the centerstand.2. Remove the drive belt upper guard.Refer to “REAR WHEEL” on page 4-30.3. Tap the drive belt and measure the vibrationfrequency.• Drive belt tension (vibration frequency)Out of specification  Adjust.TIPBefore using the tension meter, read the instruc-tion manual.a. Face the microphone part “1” of the tensionmeter to the drive belt.b. Position the microphone part of the tensionmeter on the belt within 10 mm (0.39 in).c. Set the microphone part of the tension me-ter at the intermediate distance betweenthe drive pulley and the rear wheel pulley.d. Tap with the suitable stick “2” to vibrate thebelt.EF GH IJ KTension meter (TEXA)90890-03258Drive belt vibration frequency74–94 Hz