Lathe: Changing Gears

It took me a minute to figure out the proper way to adjust the lathe's gears when converting to and from threading operations. There are two adjustment, one locked in place by a 14mm bolt, and one by a 10mm nut. Use the 14mm bolt adjustment to set the clearance between the idler gear and the lead screw, and the 10mm to adjust clearance between the idler and spindle. Proper clearance should allow just the slightest amount of play between the teeth of the gears.