Fitting Steel String Slotted Head Tuners
The extra delrin bearing bushes are optionally used. The outer bush is a clearance bush that sits behind the side-plate. The inner bush supports the roller and prevents wear of the headstock which is greater than classical guitars because of the heavier string load and the smaller diameter of the string roller.
These bushes are not attached to the string rollers and must be bonded to the headstock. Once bonded, locate the set on the headstock and mark the woodscrew holes accurately. Then pilot drill the holes 1.5mm diameter by 5mm deep. It is important that this is done accurately as poor fitting will affect the precision of the gearing and performance of the tuner.
Download the pdf
