Catch hold of the damper rod at the left behind the action and work it. If it squeaks, you will have to take out the action and oil the swings where they are hinged to the main rail.

QUESTIONS ON LESSON V.

  1. If you should find a key sticking, how would you determine the cause?
  2. Name all the defects to which the key is subject.
  3. Describe the proper adjustment of bottom or capstan.
  4. Give two causes of blocking.
  5. Give the purpose of the regulating button, and its proper adjustment.

LESSON VI.

REGULATING AND REPAIRING.(Continued.)

The Square Action.

1. The key in the square piano is subject to the same troubles as that of the upright, and requires the same treatment. However, the keys being much longer are more liable to cause trouble by warping.