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600 / 600FC
OWNER'S MANUAL
Issue 2 / Version E - Dec. 10, 1997
PROGRESSION
Copyright 1997 GAMMA Sports - All Rights Reserved
Provided by www.gssalliance.com
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TABLE OF CONTENTS
PAGE 1 ................................................................................................WARRANTY
PAGE 2 ...................................................................................................FEATURES
PAGE 3 ....................................................................... ASSEMBLY INSTRUCTIONS
PAGE 4 .............................................................................. MOUNTING THE FRAME
PAGE 5 ..............................................................................STRINGING THE FRAME
PAGE 8 ...................................................................................... PATHFINDER AWL
PAGE 9 ............................................................................ FIXED CLAMP UPGRADE
PAGE 10 ....................................................................... FIXED CLAMP OPERATION
PAGE 11 .......................................................................................... MAINTENANCE
PAGE 12 ............................................................................................... PARTS LIST
PAGE 13 .......................................................................... EXPLODED PARTS VIEW
PAGE 14 ....................................................................... MOUNTING STAND PARTS
OWNER'S MANUAL
PROGRESSION 600 / 600FC
LIMITED 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.
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FEATURES
Drop Weight Tensioner w/ 8lb. to 90lb. range and Permanently
Engraved Weight Scale
Professional Six Point Mounting System w/ L-Shaped Frame Shoulder
Clamps - Accomodates All Racquets Without Adapters
Patented Parallel Jaw Rotating Ratchet Gripper w/ Diamond Dust
Coated Gripping Surfaces - U.S. Patent #4,491,322
Two Composite Floating Clamps w/ Thumb Screw Adjustment
Durable Polystyrene Base Cover w/ Convenient Padded Tool Tray
Strong, Light Weight, Powder Coated Molded Aluminum Construction
Upgradeable to Progression 600FC w/ Professional Dual Action Fixed
String Clamps
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ASSEMBLY INSTRUCTIONS
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.
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 Frame Support Posts
The GAMMA 600 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
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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.
Adjusting the Frame Shoulder Supports
Being sure the shoulder supports are free to
swivel in thier mountings, simultaneously
rotate the shoulder support adjustment knobs
clockwise until both shoulder supports gently and squarely contact the frame.
Tighten the Frame Support Slides at the head
and throat of the racquet until they gently
contact the frame between the two center
main string grommets.
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.
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STRINGING THE FRAME
The drop weight is of a two piece design.
When assembled, it will accomodate ten-
sions 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 re-
moval of the drop weight bar endcap.
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.
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. Using a floating clamp,
secure the center and the adjacent string to
each other on the inside of the frame.
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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 grip-
per 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.
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.
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STRINGING THE FRAME
Clamping the String
Clamp the tensioned string to the next adja-
cent string using the second string clamp.
Release the string from the gripper by raising
the tension arm.
Repeat the procedure for all of the remaining
main strings and tie off following the racquet
manufacturers recommendations.
Starting the Cross Strings
Follow the manufacturer's recommended
stringing pattern for one or two piece string-
ing. This will determine the starting point for
the cross strings. If applicable, tie the first
cross string using an appropriate starting
knot.
Weave the cross strings over and under the
main strings being careful to alternate the
weave 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 speci-
fied by the racquet manufacturer.
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PATHFINDER AWL
The Gamma 600 includes the new Pathfinder
stringing awl which creates a pathway
between or around strings to make inserting
a string through tight gromets 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.
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FIXED CLAMP UPGRADE
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.
Fixed Clamp Installation - (cont.)
Place the load bushing into the top of the
clamp base mating it to the lower guide
bushing. After checking that the thrust bear-
ing 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 corro-
sion during shipping. Remove any exces-
sive 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.
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FIXED CLAMP OPERATION
Fixed Clamp Operation
The fixed clamps for the GAMMA 600 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 sub-
jected 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 ex-
tremely 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 11.
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MAINTENANCE
Your GAMMA 600 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 Clamps
The clamps provided with your stringing
machine will need minor adjustments ac-
cording to what string type, construction,
and gauge you are using.
To adjust, route 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 turning the thumb knob
(floating clamp) or hex screw (fixed clamp)
opposite of the handle, in the clockwise
direction. If the clamp leaves impressions or
damages the string, it is too tight and must be adjusted by turning the thumb knob or hex screw
counterclockwise.
The clamp jaws must be clean and free from dirt, oil, and any string coating for them to grip
properly. Clean the clamp jaws with alcohol.
Note: The string clamps supplied with your Gamma stringing machine can accomodate
tight string patterns such as badminton. Depending on the string pattern, the clamp
will spread the strings slightly which will not compromise the quality of the string
job.
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PARTS LIST
PART #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
17
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
39A
DESCRIPTION
ALUMINUM BASE
BASE COVER
TRAY PAD
TURNTABLE BUSHING
RUBBER FEET
CAP SCREW
FOOT NUT
BUSHING SET SCREW
WASHER
WINDER STAND
TURNTABLE
TURNTABLE PIN
POST LOCK LEVER
WASHER
SUPPORT POST
CAP SCREW
FRAME SUPPORT SLIDE
BADMINTON ADAPTER
TENNIS ADAPTER
KNOB
TENSION BAR
TENSION BAR CAP
DROP WEIGHT KNOB
FRONT WEIGHT
REAR WEIGHT
TENSION BAR DRUM
STRING GRIPPER DRUM
UPPER GRIPPER JAW
LOWER GRIPPER JAW
RATCHET TEETH
RATCHET TEETH SPRING
GRIPPER JAW SPRING
CAP SCREW
TENSION BAR ROLL PIN
GRIPPER PIVOT PIN
SNAP RING
PART #
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
57A
58
59
60
61
62
66
67
67A
68
69
70
71
72
73
74
DESCRIPTION
CAP SCREW
NYLON WASHER
FLOATING CLAMP ASSEMBLY
LEVER JAW
INNER JAW
KNOB JAW
LEVER
KNOB
SWING BOLT
RETURN SPRING
PIVOT PIN
RETAINING RING
CLAMP HEAD ASSEMBLY
CLAMP BASE ASSEMBLY
CLAMP BASE
GUIDE BUSHING
GUIDE BUSHING NUT
LOAD BUSHING
RADIAL BEARING
WINGED KNOB
FIXED JAW
LOOSE JAW
PIVOT BLOCK
LEVER
RETURN SPRING
HEX SCREW - FLAT HEAD
PIVOT BLOCK NUT
O-RING
HEX WRENCH / 3MM
HEX WRENCH / 4MM
HEX WRENCH / 5MM
HEX WRENCH / 6MM
PATHFINDER AWL
STRINGERS AWL
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EXPLODED PARTS VIEW
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MOUNTING STAND PARTS
143
140
141
145
144
PART #
9
13
14
15
21
22
23
24
140
DESCRIPTION
WASHER - M8
POST LOCKING LEVER
WASHER - M10
SUPPORT POST
FRAME SUPPORT SLIDE
BADMINTON ADAPTER
TENNIS ADAPTER
SUPPORT SLIDE KNOB
MTNG. STAND TOP PLATE
PART #
141
142
143
144
145
146
147
148
DESCRIPTION
MTNG. STAND PAD
SUPPORT ARM - LEFT
SUPPORT ARM - RIGHT
SHOULDER SUPP. LOCK KNOB
SUPP. ARM RETURN SPRING
ARM ADJUSTMENT KNOB
ARM ADJUSTMENT SCREW
SHOULDER V-CLAMP
14
13
147
146
142
24
9
122
22
23
21
148
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