PROGRESSION
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STRINGING MASTRINGING MA
STRINGING MA
STRINGING MASTRINGING MA
CHINECHINE
CHINE
CHINECHINE
OO
WNER'S MANUWNER'S MANU
O
WNER'S MANU
OO
WNER'S MANUWNER'S MANU
Issue 1 - April, 2000Issue 1 - April, 2000
Issue 1 - April, 2000
Issue 1 - April, 2000Issue 1 - April, 2000
Copyright 2000 GAMMA Sports - All Rights Reserved
ALAL
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PROGRESSION
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STRINGING MACHINE
TABLE OF CONTENTSTABLE OF CONTENTS
TABLE OF CONTENTS
TABLE OF CONTENTSTABLE OF CONTENTS
PAGE 1 ................................................................................... WARRANTY
PAGE 2 .....................................................................................FEATURES
PAGE 3 ...........................................................ASSEMBLY INSTRUCTIONS
PAGE 5 ................................................................ MOUNTING THE FRAME
PAGE 7 ................................................................ STRINGING THE FRAME
PAGE 11 ....................................................................... PATHFINDER AWL
PAGE 12 ............................................................................MAINTENANCE
PAGE 13 .......................................................... TROUBLESHOOTING TIPS
PAGE 13 ................................................................. CARE AND CLEANING
PAGE 14 ............................................................. EXPLODED PARTS VIEW
PAGE 15 ................................................................................. PARTS LIST
LIMITED WARRANTYLIMITED WARRANTY
LIMITED WARRANTY
LIMITED WARRANTYLIMITED WARRANTY
GAMMA SPORTS ("GAMMA") warrants to the original purchaser that the GAMMA PROGRESSION 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 electrical parts
and string clamps), and for a period of one (1) year from the date of purchase for all 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.
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 by calling 1-800-333-0337.
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
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
! Patented Parallel Jaw Rotating Ratchet Gripper w/ Diamond Dust Coated
Gripping Surfaces - U.S. Patent #4,491,322
! Professional Dual Action, Diamond Dust Coated, Fixed String Clamps
! Durable Polystyrene Base Cover w/ Convenient Padded Tool Tray
! Strong, Light Weight, Powder Coated Molded Aluminum Construction
2
ASSEMBLY INSTRUCTIONS
Engaging the Drop Weight Bar Stop
The stringing machine is shipped with the drop weight
bar in the horizontal position. To prevent racquet
damage during stringing, the bar stop must be engaged.
Remove the machine base from the shipping carton
being careful to avoid lifting by the plastic cover.
Hold the drop weight bar in the vertical position as shown
while turning the stop screw clockwise with the supplied
5mm hex wrench.
Installing the Turntable
The turntable is located under the foam packing in the
bottom of the shipping carton.
Insert the center post of the turntable into the bushing
of the stringing machine base.
Installing the Frame Support Posts
The GAMMA 600FC support post assemblies are precision aligned at the factory and are marked for proper
installation on the turntable.
Install the support post with the dot on its base to an
identical dot on the turntable. Align the threaded hole in
the bottom of the frame support post with the slot in the
turntable. Screw the lever lock bolt with washer into the
bottom of the support post and tighten gently.Position
the washer the rounded side toward the turntable.
Repeat procedure on the opposite side of the turntable
3
ASSEMBLY INSTRUCTIONS
Fixed Clamp Installation
To install the clamps, remove the winged lock knob to
separate the knob from the lower guide bushing. Be
careful not to lose the radial thrust bearing components
located in the center recess of the knob.
Align the clamp base with the clamp slot of the turntable
base. Insert the clamp guide bushing into the clamp from
the bottom of the turntable making sure to engage the
guide with the clamp slot.
Place the load bushing into the top of the clamp base
mating it to the lower guide bushing. After checking that
the thrust bearing is positioned correctly in the base of
the winged lock knob, screw the knob into the base
bushing until fully seated.
The post of the string clamp head 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.
4
MOUNTING THE FRAME
Adjusting the Frame Support Posts
Place the racquet frame over the center posts and onto
the frame support. Loosen the lever lock bolt on one
support post. Slide the post outward until the center
support of the racquet support slide is positioned near
the inside surface of the racquet frame. Securely tighten
the lever lock bolt.
Adjust the opposite post using the same procedure.
Caution: To avoid racquet damage, the center posts
should not contact the racquet prior to fixing the support
posts.
Tightening the Center Supports
Tighten the Center Supports by turning the adjustment
knob clockwise until slight resistance is felt.
Caution: Overtightening the Center Supports may 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.
5
MOUNTING 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 where the
racquet frame will not move in the 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.
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:Note:
Note: Tensions above 77lbs. require removal of the
Note:Note:
drop weight bar endcap.
7
STRINGING THE FRAME
Fixed Clamp Operation
The fixed clamps for the GAMMA 600FC 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 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.
Rotate the winged lock knob clockwise to secure the
clamp base to the turntable.
Reverse the clamping procedure to unlock the string
clamp.
The winged lock knob 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 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 12.
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 AVOID INJURY, KEEP FINGERS AWAY FROM GRIP-
PER 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
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 knot.
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.
10
PATHFINDER AWL
The Progression 600FC includes the new 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.
11
MAINTENANCE
Your GAMMA 600FC 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 :
Adjusting the Turntable Bushings
There are two adjustment points on the machine base.
One is located beneath the polystyrene base cover while
the other is accessed from below the machine.
Using the supplied 3mm hex wrench, tighten both set
screws slightly until the turntable rotates smoothly without excessive free play.
Repeat procedure until final adjustment is reached.
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 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 hex
screw counter clockwise to open the gap between the
jaws. The clamp jaws should be cleaned periodically 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.
be free from dirt, oil, and any string coating for them to
12
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.
13
EXPLODED P ARTS VIEW
14
PARTS LIST
PART #
4
5
6
7
8
9
10A
13
14
15A
21
22
23
24
25
25A
26
27
28
29
30
30A
31
32B
33B
34
35
36
37
40
53
54
55
56
DESCRIPTION
TURNTABLE BUSHING
RUBBER FEET
CAP SCREW
FOOT NUT
BUSHING SET SCREW
WASHER - M8
WINDER STAND - B/S
POST LOCK LEVER
WASHER - M10
2021 SUPPORT POST
FRAME SUPPORT SLIDE
BADMINTON ADAPTER
TENNIS ADAPTER
SUPPORT SLIDE KNOB
TENSION BAR
SET SCREW
TENSION BAR CAP
DROP WEIGHT KNOB
FRONT WT. - BADMINTON
BACK WIEGHT - TENNIS
TENSION BAR DRUM
SET SCREW
STRING GRIPPER DRUM
UPPER JAW w/ INSERT
LOWER JAW w/ INSERT
RATCHET TEETH
RATCHET TEETH SPRING
GRIPPER JAW SPRING
CAP SCREW
CAP SCREW
CLAMP BASE ASSEMBLY
CLAMP BASE
GUIDE BUSHING
GUIDE BUSHING NUT
PART #
57
57A
58
122
140
141
142
143
144
145
146A
147
148
161
162
163
172
179
181
187
188
189
190
DESCRIPTION
LOAD BUSHING
RADIAL BEARING
WINGED KNOB
SHOULDER PADS (RED)
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
2020-25 TURNTABLE
GLIDE BAR - ALUM.
COMP. FIXED CLAMP - RED
PII ALUMINUM BASE
PII BASE COVER
PII LOWER TRAY PAD
PII UPPER TRAY PAD
TOOLS AND ACCESSORIES
70
72
73
108
109
167
170
196
HEX WRENCH - 5MM
PATHFINDER AWL
STRINGERS AWL
UTILITY KNIFE
BOX WRENCH - 17MM
M10 SUPP - POST SCREWS
10 PC. HEX WRENCH SET
PLIERS
15
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