Knee levers
Procedure as above; refer to Figure 11 if lever is moving left, to Figure 12 if lever is moving right, guitar in playing position. Be sure cap screw on mobile knee lever slave is tightened on cross shaft. This is also true on non-mobiles; they must be centered.
Trouble shooting
General tuning: it is important to realize that the Sierra guitar is a precision machine set up to operate within tuning specs set at the factory. Occasionally, through expanding his tuning, a player will exceed the original predetermined specs set up by us, (e.g. different pedal action, different pedal throw length, extra long changes, new changes, etc.). To broaden the scope of your original tuning specs is no problem. The following section will describe the procedures necessary to achieve your goals.
To lighten: remove pedal rod ball end from center hole on pedal and move to hole nearest pedal bracket. The closer toward the pedal bracket the pedal bail end, the easier but longer) it will be. Away from the pedal bracket the opposite is true (Figure 15). Additional effort change can be achieved by adjusting rod end on cross shaft. Remember: when making a change, shorter is to make it harder. Also, keep in mind when changing mechanism advantage (lightness) of a change that it must be compatible with the setting of your cam stop ’Äî you may need more or less room.
Tension springs
Insufficient travel may be caused at the tension springs, Figure 14, on underside of changer. Push a lowering change while looking at the tension springs, (B). Observe the lowering finger (C) will move forward; this should only happen while lowering. If this is occurring during a raise, it will tend to cancel your raise. Tighten the small screw at the right endplate (D) while working the pedal. When the movement is stopped turn screw 1-1/2 to 2 complete turns and you should have a greater raise of pitch to your change. (This should be done with the raise having most travel on any given string, such as the 3rd pedal E to F# instead of left knee lever right E to F.
Untrue return
If a change does not return all the way to its original pitch make sure the pull rods are not over-tightened. Observe underside of changer, Figure 14, ’Äî if the change lowering finger (C), or the offending string is misaligned, and not pulled back to the rear (E) bushing, tighten the tension until misalignment is corrected. A good preliminary test for rod over-tightening is to check changer bridge, Figure 14., Item A, at the ball end of the string. If the string in question is over-tightened, it will be out of alignment with the other changer bridges. Loosen the next rod and follow tuning procedures.
Insufficient travel
Follow pedal tuning section procedure; you may need to re-set your cam.