Matrix L4-1.8L (1ZZ-FE) (2008)
(a) Turn the drive belt tensioner clockwise to relieve tension on the belt, and then remove the belt.
(b) Carefully return the tensioner to the unloaded position.
NOTICE:
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When retracting the tensioner, turn it clockwise slowly in 3 sec. or more. Be sure to not apply force rapidly.
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After the tensioner is retracted all the way, do not apply force any more than necessary.