TM 9-2320-386-10 2-65 2-21. OPERATION OF ADJUSTABLE DRIVER’S SEAT AND SEATBELT a. Seat Adjustment. WARNING Always wear seatbelts when operating vehicle. The use of seat- belts is essential to the safety of all personnel. Failure to wear seatbelts when operating vehicle may result in serious injury or death to personnel. General. The M35A3, M35A3C, and M36A3 are equipped with an adjustable driver’s seat (1). (1) To position seat (1) horizontally, pull lever (2) up and slide seat (1) to desired position. (2) Release lever (2) to lock the seat (1) into desired position. NOTE Operator must be in seat for accurate adjustment. (3) To adjust spring tension for the driver’s seat (1), set handwheel (3) at operator’s body weight. Seat will automatically adjust back to normal spring tension when operator’s weight is removed. b. Seatbelt Adjustment. (1) Pull shoulder harness strap (7) and lap belt (8) across body and fasten latch plate (9) to belt buckle (4). (2) Ensure seatbelt is not twisted in any way. (3) Remove all slack from seatbelt by pulling down on shoulder harness strap (7) and releasing. (4) Ensure shoulder harness strap (7) fits snugly against shoulders and chest, and lap belt (8) fits snugly across hips (not across waist). (5) To adjust seatbelt, pull shoulder harness strap (7) or lap belt (8) through latch plate (6). (6) To release seatbelt, push the release button (5) on belt buckle (4) and release the latch plate (6). 1 2 3 4 5 6 7 8