Hi there,
You can re position the wiper arm, but that may make it strike the bonnet instead, what is normally the problem is one or more of the wiper regulator bushes are worn, and this allows the wiper arc to increase, causing the arm to strike off the screen. You should get your mechanic to inspect and repaired as needed.
Mark (mhpautos)
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Wednesday, December 26th, 2007 AT 3:57 PM