TB 9-6680-284-35
(9) Adjust RPM control to 900. If frequency counter does not indicate between
66.00 and 67.340, repeat (1) through (8) above.
(10) Set range function control to 110-690 and adjust RPM control to 600.
(11) Adjust R8 (fig. 1) for 100.0 ms indication on frequency counter (R).
(12) Adjust RPM control to 150. If frequency counter does not indicate between
396.03 and 404 ms, repeat (1) through (6), (10), and (11) above.
(13) Repeat a above.
a. Deenergize and disconnect all equipment.
b. Annotate and affix DA Label/Form in accordance with TB 750-25.
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