Elecraft KXPD3 - Manual (Page 4)

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Figure 4. Removing Top Cover.
Free the spring as shown in Figure 5 and replace it with the desired spring. Move the paddle arm back over the
travel stop with the spring captured by the screw in each paddle arm, and then hold the paddles compressed
together against the stationary contacts while you replace the top.
Be sure that:
 The pivots are in the bottom and top cover recesses.
 The spring is positioned between the screws.
 The paddles are positioned inside the travel stops.
 The pivots fit into the recesses in the top cover.
 You replace all three hex screws securing the top cover.
Figure 5. Replacing the Spring.