Landing Roll Procedure, Boeing 737-300-400-500 Operations Manual:
Pilot flying:
At 60 knots, reduce reverse thrust to be at IDLE reverse when reaching taxi speed.
Pilot not flying:
call "60 KNOTS"
Pilot flying:
Approaching taxi speed, slowly move the reverse thrust levers to the full down position.
Pilot not flying:
Verify REVERSER UNLOCKED lights extinguished.
