I wrote and emailed this earlier today, but not to the forum. Some of the questions in my Questionnaire might require raising or removing the motor board. For those who are willing to do this, here is a set of instructions that will help to prevent damage caused by the crescent shaped auto-stop lever digging into the painted front edge and top of the motor board, while removing the motorboard from the cabinet. It was written with the later control levers in mind, but much of it will apply to the early type levers as well.
Andy Caution: Motor board is heavy. Stand on side of cabinet opposite the winding crank side. Use care to prevent further damage to paint on motorboard and damage to top rim of cabinet when removing motor board assembly away from cabinet. 1) Remove the reproducer and winding crank. 2) While guiding the top of the horn with one hand (behind the knurled collar that retains the reproducer), lift the whole horn/mute ball/horn support shaft assembly up and out of the socket in the floor of the horn compartment. It needs to be lifted high enough to clear the top of the socket plate. 3) Gently set the end of the ball-stud (at the bottom of the vertical horn support shaft) down, outside of the socket hole, gently far enough away from the hole to prevent it dropping back in. The weight of the horn and arm may want to push this slightly out toward the front of the machine, typically to about the 4 or 5 o'clock position around the socket hole. You may want to place a pad or piece of stiff board (such as found on the back of a legal pad) on the floor of the horn compartment to prevent scuffs. 4) With the horn lift control-lever angled straight up (all the way vertical), slide the crescent auto-stop lever up until it touches the underside of the rocking horn/reproducer control handle bracket. Because of the off-center weight of the crescent lever itself, it should tilt down just slightly and stay up against the rocking bracket. The idea is to get it as far up above the painted motor board as you can. 5) Make sure the winding crank has been removed from the motor. You may wish to place a cloth between the motor board top front edge and the underside of the crescent lever before proceeding. Lift the motor board up from the side (opposite the winding crank) until the flats in the pivot studs align with the exit paths of the support bracket. It shouldn't tilt more than a few inches before the alignment occurs. The exit position is very specific. Slightly too high or low will prevent the withdrawal of the motor board. 6) Disengage the rear pivot stud just slightly before disengaging the front one, by pulling the motor board away from the crank side of the cabinet. At the same time, move the entire motor board slightly rearward to disengage the front stud completely and keep the motor board clear of the auto-stop lever. 7) Once both studs are disengaged from the cabinet bracket, lift the whole motor board up high enough to prevent striking the cabinet rim with the bottom of the motor.
