It will be necessary to fabricate a styrene spacer. Locomotives
with the green printed circuit board should already have a styrene spacer.
This spacer will be placed under the decoder so that the wires from the
motor don't touch the decoder.
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Using the decoder as a pattern, trace the shape of the sides of the
decoder onto a piece of sheet styrene. (It is not necessary to trace the
ends of the decoder.) Make sure that you have traced the two square
holes in the decoder onto the styrene. Your pattern should be similar to
Figure 1 below.
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Draw a line in front of the two square square holes and cut out the
spacer. Do not cut the two square holes for the tabs. Your
spacer should look like Figure 2.
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The spacer will have to fit below the black plastic tabs on the motor
mechanism. To make the spacer fit, measure 1/8" on each side of the
square holes. Cut out the holes. Your spacer should look like
Figure 3.
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