Brother GT-541 Instruction Manual page 110

7. Troubleshooting
(12) Insert the right projection of the new Wiper Blade to the slit of the right Operation Arm by pushing
the right Operation Arm about 5 mm (0.2 inches) to the right.
<Note>
Do not push the Operation Arm by force. It may be distorted.
Take care not to push down the Wiper Blade and the Operation Arms by force. They can be
easily damaged..
(13) Confirm that both projections of the Wiper Blade are inserted to the slits of the Operation Arms.
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GT-541