My copy of the dash 10 doesn't make any mention of when to adjust the seat. And, the first step of Chapter 4, OPERATING PROCEDURES is the description of how the hand throttle works. The first step in Section 4-6, GENERAL OPERATING PROCEDURES, Step a. Before Engine Startup is:
1. Pull handbrake lever (1) up to position.
Now that's trivia.
Although, the first step in paragraph 2-9 PREPARE TO OPERATE VEHICLE of the -10 for the M977 series HEMTT (TM-9-2320-279-10-1) is:
a. Change Vehicle Weight Indicator.