10
Setting Tension
The spring tensioner utilizes a rotary adjust-
ing knob along with a linear tension scale
to indicate the tension setting. The scale is
divided into 3 lb. increments and each 1/3
turn of the tension knob changes tension
by 1 lb. To set the desired tension, rotate
the tension knob and align the mark on the
spring guide with the desired tension setting
on the scale. When the “0” mark on the knob
aligns with the line on the knob support the
tension will be that indicated on the scale.
To increase tension by 1 or 2 lbs turn the
knob counterclockwise until the “1” or “2” mark on the knob aligns with the line on the knob
support. To decrease tension by 1 or 2 lbs, turn the knob clockwise until the “2” or “1” mark
on the knob aligns with the line on the knob support.
STRINGING THE FRAME
String Clamp Operation
The String
Clamps are of a dual action design
where the string clamp and clamp base oper-
ate independently of one another.
To clamp a string, lift the clamp head and
place the string between the jaws and de-
press the clamp head lever to secure the
string. The clamping pressure applied to the
string should be adjusted to provide suffi cient
pressure to secure the string when subjected
to the desired pulling tension. The diamond
coated gripper plates provide for increased
friction between the clamps and the string
to allow for reduced clamping pressure while securing and holding the string under tension.
Note that excessive pressure can damage both the strings and String Clamp.
Clamp Base Operation
Rotate the base locking lever clockwise to
secure the clamp base to the turntable.
Reverse the clamping procedure to unlock
the string clamp. The locking lever is spring
loaded to assist the unlocking of the clamp
base.
The locking lever should be tightened enough
to prevent clamp base slippage on the turn-
table, when the desired tension is placed
on the string. To go from the loose position
to the clamped position and back, generally
requires the travel permitted by the clamp base. If the travel is not suffi cient to allow smooth
operation adjust the clamp base as outlined on page 16.
