3
NECK
Ibanez steel string models are
equipped with adjustable truss
rods. The purpose of a truss rod
is to adjust the neck to counteract
string tension. There are many
reasons for truss rod adjustments.
One of the most frequent reasons
is changing string gauges or
tuning pitch which can affect string
tension. String tension changes
may affect the string height and
cause fret buzz or incorrect notes.
To adjust the truss rod, locate the
truss rod nut and adjust it by
inserting the correct wrench into
the nut and tightening (clockwise) or loosening (counter clockwise) the rod. Truss rod tension can
be measured by installing a capo at the first fret, holding the string down at the fret position where
the neck joins the body. Insert a thickness gauge between the string and the fret at the 8th fret.
There should be between 0.3 mm to 0.5 mm clearance. That clearance is referred to as “neck
relief” Too much neck relief can cause the neck to have higher action in the middle of the neck
causing poor intonation and uncomfortable playability. No neck relief can cause fret buzz.
* Appropriate care must be taken when adjusting the neck and we recommend only qualified technicians perform this
procedure.
ACTION
Ibanez bass string action is set at the factory. However, there are many
reasons that an instrument’s string height can change. Instruments can be
affected by changes in temperature and moisture. High string action can
make the guitar difficult to play. If the string action is too low, fret buzz or
unclear notes can occur. To remedy this, follow the instructions for the
particular type of bridge installed. In the case of string action, make sure
the guitar is in tune and the truss rod is adjusted properly. Ibanez action is
set to 2.0mm for treble side and 2.5mm for bass side at the 12th fret. The
action may also need to be readjusted after the neck is adjusted or strings
are changed to a different gauge. Follow the instructions in the relevant bridge manual to make
adjustments.
ENGLISH
TIGHTEN
LOOSEN
TIGHTEN
LOOSEN
0.3 to 0.5 mm
8th FRET
