Is this what you were reading on your installation instructions?
FORE/AFT ADJUSTERS and SUSPENSION KITS
If the seat is to be installed with fore/aft adjusters and or a suspension kit. Mount the adjusters to the seat bottom using the mounting bolts described above, then secure to the suspension kit. Orient the adjuster handle and weight adjustment handle to properly project out the front side of the seat. This handle can be used to unlock the adjusters, which will allow the seat to slide backwards and forward to a comfortable latched position for the operator. Check to ensure that the seat or suspension kit does not strike any part of the cab, wiring or any of the controls as it is moved through the fore/aft stroke. Ensure the seat is locked in place before operating the equipment. Do not operate the adjusters while the equipment is moving. Do not operate the equipment if the adjusters are loose, broken, or malfunctioning.
The installer must ensure that the suspension is positioned and mounted properly so that the seat, safety belts, tether belts, tether mounting points and floor anchor points meet FMVSS 207/210 SEA standards and others when applicable. The installer must also ensure that there is adequate head clearance above the seat for the occupant while the vehicle/machine is in motion. FAILURE TO DO SO MAY CAUSE SERIOUS INJURY OR DEATH.