Attention.
- The belt must fit correctly into the pulley grooves.
- Do not allow engine oil or coolant to come into contact with the belt or pulley grooves.
2. Adjust the belt tension.
3. Tighten the idler pulley lock nut to a torque of 34.8 Nm.
4. Make sure that the drive belt tension corresponds to the nominal value.
(The text was borrowed from here: nissanbook)