Remove the drive belt.
(Refer to Timing System - "Drive Belt")
Remove the idler (#2).
(Refer to Timing System - "Idler")
Remove the drive belt tensioner (A).
Tightening torque :
25.5 ~ 30.4 N.m (2.6 ~ 3.1 kgf.m, 18.8 ~ 22.4 lb-ft)
Install in the reverse order of removal.
Check the belt tensioner for excessive foreign substances, crack, damage or sticking of pivot shaft. Replace if necessary.