X-6FC
STRINGING MACHINE
OWNER'S MANUAL
Issue 1 - May 2004
Copyright 2004 GAMMA Sports - All Rights Reserved
OWNER'S MANUAL
GAMMA X-6FC
TABLE OF CONTENTS
PAGE 1 ................................................................................................WARRANTY
PAGE 2 ...................................................................................................FEATURES
PAGE 3 ....................................................................... ASSEMBLY INSTRUCTIONS
PAGE 5 .............................................................................. MOUNTING THE FRAME
PAGE 7 ..............................................................................STRINGING THE FRAME
PAGE 11 ...........................................................................ADDITIONAL FEATURES
PAGE 13 ....................................................... MAINTENANCE AND ADJUSTMENTS
PAGE 14 ........................................................................ TROUBLESHOOTING TIPS
PAGE 14 .............................................................................. CARE AND CLEANING
PAGE 16 ............................................................................................... PARTS LIST
PAGE 17 ..................................................................................... PARTS DRAWING
LIMITED WARRANTY
GAMMA Sports (GAMMA) warrants to the original purchaser that the X-STRINGER stringing machine ("EQUIPMENT") purchased
is free from defects in materials and workmanship for a period of five (5) years from the date of original purchase for mechanical parts
(excluding any electrical parts and string clamps), and for a period of one (1) year from the date of purchase for any electrical parts
and string clamps. Should any defects develop under normal use within the specified time periods, GAMMA will at its option, repair or
replace the defective EQUIPMENT provided it is returned to GAMMA prepaid at the purchaser's expense. This warranty does not apply
to any damage or defect caused by negligence, abuse, misuse, unauthorized alteration, shipping, handling, or part wear and tear as
a result of normal use.
Routine maintenance, adjustment, and cleaning required to ensure proper operation are the responsibility of the purchaser and are not
covered under the terms of this warranty. These include, but are not limited to: String Clamp adjustment, as described on page 12,
Turntable Bushing Adjustment, as described on page 12 and the Rotational String Gripper.
GAMMA's obligation under this warranty is limited to repair or replacement of defective EQUIPMENT, and no one is authorized to
promise any other liability. GAMMA shall in no event be liable for any incidental or consequential damages.
To return defective EQUIPMENT, a return authorization (RA#) must be obtained from a GAMMA customer service representative. The
RA# must be marked on the outside of the shipping carton being returned. All returns must be shipped prepaid by the customer to
GAMMA. Please retain the original shipping carton and packing materials for any future shipments. GAMMA will not be responsible
for machines which are not sent in the original undamaged packaging.
1
GAMMA X-6FCGAMMA X-6FC
GAMMA X-6FC
GAMMA X-6FCGAMMA X-6FC
MACHINE FEATURES
Drop Weight Tensioner w/ 8lb. to 90lb. range and Permanently
Engraved Weight Scale
Professional Six Point “Quick Mount” Racquet Mounting System -
Accomodates All Racquets Without Adapters
Parallel Jaw Rotating Ratchet Gripper w/ Diamond Dust Coated
Gripping Surfaces
Professional Dual Action, Rotating, Diamond Dust Coated, Fixed
String Clamps
High Strength Extruded Aluminum Frame with Durable Anodized
Finish and Convenient Padded Tool Tray
Unique Internal Drawer System for Storing Tools and Adaptors
2
ASSEMBLY INSTRUCTIONS
Winder Support Stand Installation
Remove the M5 bolts from the 2 brackets
located in the rear slots of the machine base
using the 5MM hex key. Slide the brackets to
the right end of the base and position the
winder stand over the brackets aligning the
holes in the base of the winder stand with
the holes in the brackets. Attach the winder
support stand using the M5 bolts. Install all 4
bolts loosely at first and then tighten all
securely.
Engaging the Drop Weight Bar Stop
The stringing machine is shipped with the
drop weight bar in the horizontal position. To
limit the rotation of the drop weight bar and
prevent racquet damage during stringing,
the bar stop must be engaged.
Hold the drop weight bar in the vertical
position as shown while turning the 5mm
stop screw located on the back side of the
winder stand clockwise.
Installing the Drop Weight
Remove the endcap from the tension bar and
slide the drop weight onto the bar. The
weight should be oriented with the knob end
closest to the string winder. Replace the end
cap.
3
ASSEMBLY INSTRUCTIONS
Support Post Installation
To install the support posts you must first
remove the turntable end cap by grasping
the sides of the end cap and removing it, to
gain access to the inside of the turntable.
Repeat procedure on the opposite side of
the turntable.
If end caps are tight, a flat blade screw driver
may be used to pry the end caps off.
Nylon
washers
Remove Mounting Bolts
While holding the mounting plate on the inside
of the turntable remove the support post
mounting bolts.
NOTE: There are two Nylon washers that
are are included for shipping purposes only.
Remove and discard the nylon washers.
Repeat procedure on the opposite side of
the turntable
Installing the Frame Support Posts
Place the support post onto the central slot
of the turntable. While holding the mounting
plate against the inside top surface of the
turntable with your fingers, align the hole in
the support post with the hole in the mounting
plate. Install the mounting bolt through the
support post and into the plate by hand and
tighten with the 6 mm hex wrench. Re-install
the turntable end caps.
Repeat procedure on the opposite side of
the turntable
4
ASSEMBLY INSTRUCTIONS
String Clamp Installation
The post of the string clamp and tube of the
string clamp base are treated with grease to
provide protection against corrosion during
shipping. Remove any excessive grease
with a clean cloth prior to use. The post and
tube may also be cleaned with isopropyl
alcohol. After this type of thorough cleaning,
the post and tube should be treated with a
light coating of machine oil to protect the
surfaces against corrosion and to ensure
smooth operation.
MOUNTING THE FRAME
Adjusting the Frame Support Posts
Loosen the lock bolts of the frame support
posts and space them apart with the frame
support slides separated by the approximate length of the racquet head. Although it
is not required, it is good practice to center
the support posts on the turntable. Lock one
of the posts in position by tightening the lock
bolt and position the other post until the frame
support slide is positioned near the inside
surface of the racquet frame. Securely
tighten the lock bolt of the second support
post.
Caution: To avoid racquet damage, the
center posts should not contact the racquet
prior to locking down the support posts.
5
MOUNTING THE FRAME
Tightening the Frame Supports
Tighten the Frame Support Slides by turning
the adjustment knob clockwise until snug
against the racquet frame and slight resistance is felt.
Caution: Overtightening the Center Supports will stretch the head of the racquet and
could cause racquet damage.
Frame Shoulder Support Adjustment
Being sure the shoulder supports are free
to swivel in their mountings, simultaneously
rotate the shoulder support adjustment knobs
clockwise until both shoulder supports gently and squarely contact the frame.
Securing the Frame
Lock the shoulder supports in position by
turning the knob at the base clockwise.
Repeat the adjustment procedure for the
remaining support post.
Re-tighten all of the frame supports in the
same order as before.
Do not overtighten any of the supports as
racquet damage may occur.
The supports should be tightened to the point
mounting system when the handle is grasped and attempts are made to move it. Should any
supports lose contact with the frame while stringing, they should be re-tightened.
where the racquet frame will not move in the
6
STRINGING THE FRAME
Setting Tension
To set the stringing tension, loosen the
locking knob on the side of the drop weight.
Slide the weight in the appropriate direction
until the face closest to the string gripper is
indexed with the desired tension mark on the
tension bar.
The drop weight is of a two piece design.
When assembled, it will accomodate tensions from 20 lbs. to 90 lbs. For tensions from
8 to 20 lbs., remove the 5mm bolt on the face
of the drop weight, and use the smaller
portion of the weight as described above.
Note: Tensions above 77lbs. require removal of the drop weight bar endcap.
7
STRINGING THE FRAME
Fixed Clamp Operation
The fixed clamps for the X-6FC are of a dual
action design. The string clamp and the
clamp base operate independently of one
another.
To clamp a string, lift the clamp head and
place the string between the jaws. Depress
the clamp head lever to secure the string.
The clamping pressure applied to the string
should be adjusted to provide sufficient
pressure to secure the string when subjected to the desired pulling tension. The
increased friction between the clamps and the string to allow for reduced clamping pressure
while securing and holding the string under tension.
tensions, additional tightness may be required.
Note: If the string slips in the string clamp while tensioning, adjust the gap
between the clamp jaws as per the instructions on page 13.
diamond coated gripper plates provide for
Rotate the lever lock clockwise to secure the
clamp base to the turntable.
Reverse the clamping procedure to unlock
the string clamp.
The lever should be tightened enough to
prevent clamp base slippage on the turntable, when the desired tension is placed on
the string. To go from the loose position to the
clamped position and back, generally requires about 1/2 to 3/4 quarters of a turn.
Although when stringing at extremely high
Getting Started - Clamping the First
Main String
To begin stringing the main strings, thread
the two ends of the string through the two
center holes at the appropriate end of the
frame and continue through the opposite
center holes. Thread one end of the string
through the adjacent grommet hole and pull
excess by hand.
Secure one of the strings using a string
clamp.
8
STRINGING THE FRAME
Gripping the String
While holding the tension bar slightly above
horizontal, wrap the free string clockwise
around the gripper drum once and position
between the gripper jaw.
Gently turn the gripper clockwise while
squeezing the jaws together until all slack in
the string is removed.
Note: For proper operation, the string gripper jaw must be in the position shown. The
tension in the string provides the clamping
force to the jaws.
Pulling Tension
While securely holding the string gripper
drum with your hand, lift the tension bar
above horizontal and gently lower the bar
under its own weight. If the tension bar
drops below horizontal, repeat the above
action until the bar comes to rest parallel to
the racquet.
WARNING: TO A VOID INJUR Y, KEEP FINGERS AWA Y FROM
GRIPPER JAWS WHILE TENSIONING STRING.
When the correct tension is attained, the
drop weight bar will rest horizontally as
shown. For accurate tensioning, it must be
lowered and come to rest at horizontal
without assistance. Manually forcing the
tension bar to the horizontal position will
greatly increase the string tension and may
result in racquet damage.
If the tension bar comes to rest above
horizontal, release the string by lifting the bar
and re-pull the string.
9
knot.
STRINGING THE FRAME
Clamping the First Main String
Secure the tensioned main string using the
remaining fixed clamp. Repeat the procedure for all of the remaining main strings and
tie off following the racquet manufacturers
recommendations.
Follow the manufacturer's recommended
stringing pattern for one or two piece stringing. This will determine the starting point for
the cross strings. If applicable, tie the first
cross string using an appropriate starting
Weaving the Cross Strings
Weave the cross strings over and under the
main strings being careful to alternate the
weave direction of each consecutive cross
string so as to be opposite of the previously
installed cross string.
Once the final cross string is tensioned and
clamped, tie off at the appropriate hole specified by the racquet manufacturer. Remove
the frame from the mounting system by
loosening the shoulder supports and frame
supports.
10
ADDITIONAL FEATURES
Storage Drawer
There is a storage drawers located in the
base of the machine. The drawer opens
from the right end of the base and locks into
the end cap with a spring loaded latch.To
open the drawer, reach under the right had
end cap to find the the spring loaded latch
handle. Pull the latch handle toward the
outside of the end cap to release latch from
the end cap and slide the drawer out. To
close the drawer simply slide the drawer
back inside the base and the latch with
automatically lock into place.
View from underside of end cap showing latch
handle.
Cutting Block
A cutting block is provided to provide a
surface for cutting a point on the strings
using a cutter.
11
PATHFINDER AWL
The stringing machine includes the Pathfinder stringing awl which creates a pathway between and around strings to make
inserting a string through tight grommets
easier and quicker.
Insert the awl through the grommet hole in the
same manner as for traditional awls. The
Pathfinder awl must be in the closed position
before insertion.
Once the awl is inserted, pull the handle of
the awl outward while holding the tip section
in place, leaving the outer sheath in the
grommet hole.
Insert the end of the string into the center of
the sheath.
While holding pressure on the string, slowly
pull the sheath out of the grommet hole to
leave the end of the string exposed.
12
MAINTENANCE and ADJUSTMENTS
Your GAMMA stringing machine is adjusted for optimum performance at the factory and needs
no further adjustments before use. After extensive use however, the machine may need minor
adjusments as follows :
Turntable Bushing Adjustment
The turntable bushing is adjusted at the
factory for optimum performance. After time
and use, the turntable bushings may need
minor adjustment. An adjustment is indicated
when noticeable turntable looseness or
wobble occurs while stringing.
To adjust the fit between the turntable pin
and the bushings, tighten the set screw at
the top of the bushing using a 3mm hex
wrench. Tighten until the turntable rotates
smoothly without excessive free play.
String Clamp Base Adjustment
The string clamp bases do not require
adjustment. The simple “Lever Bolt & Nut”
design, provides maximum flexibility for
providing clamping pressure to the turntable and running clearance for repositioning. Approximately 1/2 turn is all that is need
to lock and release the clamp base from the
Closed Position
Open Position
turntable.
Adjusting the Clamp Pressure
The clamps provided with your stringing machine will need
minor adjustments according to what string type, construction, and gauge you are using.
To adjust the gap (clamping pressure) between the clamp
jaws, insert the string through the racquet as if you were
beginning the main strings. Clamp the strings and pull
tension. If the string slips through the jaws of the clamp,
tighten the clamp by compressing the clamp jaws together
Adjustment
Knob
the gap between the jaws. The clamp jaws should be cleaned periodically to be free from dirt,
oil, and any string coating for them to grip properly.
Note: The string clamps supplied with your stringing machine can accomodate tight string
patterns such as badminton. Depending on the string pattern, the clamp may spread the strings
slightly which will not compromise the quality of the string job.
by hand while turning the Adjustment Knob, in the clockwise
direction. If the clamp leaves impressions or damages the
string, it may be excessively tight and should be adjusted
by turning the Adjustment Knob counter clockwise to open
13
TROUBLESHOOTING TIPS
PROBLEM SOLUTION
String slips in clamps. - Adjust gap between jaws.
- Clean clamp jaws.
String slips in gripper. - Clean gripper jaws.
- Make sure string is wrapped over top
jaw of gripper prior to inserting between
gripper jaws.
String clamp base slips on turntable. - Clean Clamp Base and Turntable
surface.
CARE and CLEANING
With time and use, the clamping surfaces of your machine may become oily or dirty and result
in string or clamp slippage while stringing. Periodic cleaning of the following parts is
recommended.
String Clamps
Clean the inside gripping surfaces of the string clamp jaws by inserting a cloth or pipe cleaner
soaked with isopropyl alcohol between the jaws and rub back and forth. If the build-up is
excessive, dismantle the string clamp jaws to expose the gripping surfaces by removing
the adjustment screw. Using a small nylon brush, (such as a toothbrush), scrub the inside
surfaces until all debris is removed. Clean the jaws with isopropyl alcohol and re-assemble.
String Clamp Base
Clean the base of the clamps and the top of the turntable with isopropyl alcohol.
String Gripper
Follow the same procedure for cleaning the string clamps.
14
15
P ARTS LIST
PART #
4
5
6A
8
9
21
MFSPP
MFSPP
25
25A
26
27
28
29
30
30A
31
MRSG
34
35
37
83A
88
MMSPP
140
141
142
143
144
145
146A
147
148
161
162
163
DESCRIPTION
TURNTABLE BUSHING
RUBBER FEET
CAP SCREW - M8
BUSHING SET SCREW
WASHER - M8
FRAME SUPPORT SLIDE
BADMINTON ADAPTER
TENNIS ADAPTER
TENSION BAR
SET SCREW
TENSION BAR CAP
DROP WEIGHT KNOB
FRONT WT. - BADMINTON
BACK WIEGHT - TENNIS
TENSION BAR DRUM
SET SCREW
STRING GRIPPER DRUM
STRING GRIPPER
RATCHET TEETH
RATCHET TEETH SPRING
CAP SCREW
TENSION BAR STOP SCREW
CAP SCREW
SHOULDER PADS
MTNG. STAND TOP PLATE
MTNG. STAND PAD
SUPPORT ARM - LEFT
SUPPORT ARM - RIGHT
SUPPORT LOCK KNOB
ARM RETURN SPRING
ARM ADJUSTMENT KNOB
ARM ADJUSTMENT SCREW
SHOULDER V-CLAMP
WINDER BEARING
GRIPPER PIVOT PIN -B/S
PIVOT PIN RTNG. COLLAR
PART #
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
MDCSC10
270
271
274
284
288
DESCRIPTION
BASE
TRAY PAD
UPPER WINDER STAND
LOWER WINDER STAND
SLIDE BRACKET
TURNTABLE
TT END CAP
SUPP POST MOUNTING PL.
SMALL DRAWER
BASE CORNER CAP
SMALL DRAWER END CAP
BASE CORNER CAP
TT END CAP - RIGHT
TT END CAP - LEFT
BASE CLAMP
STRING CLAMP
FRAME SUPP SLIDE KNOB
SUPP POST
CHOP BLOCK
EXTRUDED GLIDE BAR
BASE END CAP
TOOLS AND ACCESSORIES
70
MPSA
MA
108
109
167
HEX WRENCH - 5MM
PATHFINDER AWL
STRINGERS AWL
UTILITY KNIFE
NEEDLE NOSE PLIERS
10 PC. HEX WRENCH SET
16
P ARTS DRAWING
17
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