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600ES - LED
PROGRESSION
Copyright 1997 GAMMA Sports - All Rights Reserved
OWNER'S MANUAL
Issue 3 / Version E - Oct. 28, 1997
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TABLE OF CONTENTS
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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PAGE 1 .................................................................................................. WARRANTY
PAGE 2 ..................................................................................................... FEATURES
PAGE 3 ........................................................................ASSEMBLY INSTRUCTIONS
PAGE 5 ............................................................................MOUNTING THE FRAME
PAGE 6 ............................................................................ TENSIONER CONTROLS
PAGE 7 .............................................................................STRINGING THE FRAME
PAGE 10 ......................................................................................PATHFINDER AWL
PAGE 11 ..................................................... MAINTENANCE AND ADJUSTMENTS
PAGE 12 ....................................................................... TROUBLESHOOTING TIPS
PAGE 13 ................................................................................... COMPONENT LIST
PAGE 14 ....................................................................... COMPONENT DRAWING
PAGE 15 ......................................................................MOUNTING STAND PARTS
OWNER'S MANUAL
PROGRESSION 600ES-LED
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FEATURES
Electric Constant Pull Tensioner w/ 11lb. to 89lb. Tension
Range
Digital Tension Setting Display
Professional Six Point “Quick Mount” Racquet Mounting
System - Accomodates All Racquets Without Adapters
Parallel Jaw Rotating Gripper w/ Diamond Dust Coated
Gripping Surfaces
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
Page 4
ASSEMBLY INSTRUCTIONS
3
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 600ES 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 edge
toward the turntable.
Repeat procedure on the opposite side of the
turntable.
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.
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4
ASSEMBLY INSTRUCTIONS
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 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.
Page 6
MOUNTING THE FRAME
5
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 cen-
ter 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 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
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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6
TENSIONER CONTROLS
Setting Tension
The Progression 600ES stringing machine utilizes a rotary adjusting knob along with a digital
L.E.D. display to indicate the set tension. To set the tension, rotate the adjustment knob
clockwise to decrease the displayed tension, counter-clockwise to increase the displayed
tension, until the desired tension is displayed on the digital display. Aramid fiber and Metallic
strings will generally string up tighter on the Progression Es machine compared to synthetic
or natural gut strings. Therefore, when stringing with Aramid (Kevlar, Technora) hybrid strings
or metallic strings, we recommend setting tension 4-5 lbs. lower than you would normally use
for synthetic or natural gut strings.
C
D
B
A
C
D
E
B
A
F
G
88.8
Front Panel Features
A - String Gripper
B - Indicator lights
C - Tension Switch
D - L.E.D. Tension Display
E - Tension Adjustment Knob
F - Cover Plate
G - Gripper Reversing Switch
Rear Panel Features
A - Lighted Power Switch
To turn the power on, press the top half
of the switch.
B - 5 Amp Fuse Holder (w/ spare fuse)
C - A/C Power Cord Socket
Insert the female end of the power cord
into the socket.
D - 110V / 220V Select Switch
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7
STRINGING THE FRAME
Fixed Clamp Operation - Step 1
The fixed clamps for the GAMMA 600ES 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 pres-
sure 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.
Fixed Clamp Operation - Step 2
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 11.
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.
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8
Pulling Tension
To pull tension, wrap the free string clock-
wise around the gripper drum and position
the string between the gripper jaws.
The string must pass over the top half of the
gripper before being placed between the
gripper jaws, as the tension on the string
provides the clamping force to the gripper
jaws.
Gently pull the string until all slack is re-
moved.
Push the Tension Switch toward the right
side of the machine. The string gripper will
rotate and slowly apply tension to the string.
When the set tension has been attained, the
gripper will stop rotating and the green LED
will light. As the tensioned string stretches,
the gripper may rotate intermittently, main-
taining the set tension.
To release the string after clamping, push
the tension switch toward the left side of the
machine. If the string gripper does not re-
lease the string, depress the Gripper Re-
versing Switch once to release the string.
Secure the tensioned main string using the
remaining fixed clamp. Repeat the proce-
dure 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 string-
ing. This will determine the starting point for
the cross strings. If applicable, tie the first
cross string using an appropriate starting
knot.
STRINGING THE FRAME
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9
STRINGING THE FRAME
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 speci-
fied by the racquet manufacturer.
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1010
PATHFINDER AWL
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.
The GAMMA 600ES includes the new Path-
finder 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.
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11
Adjusting the String Clamps
The clamps provided with your stringing ma-
chine will need minor adjustments according
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 hex screw
opposite of the handle, in the clockwise di-
rection. If the clamp leaves impressions or
damages the string, it is too tight and must be
adjusted by turning the hex screw counterclockwise. The clamp jaws must be clean and free
from dirt, oil, and any string coating for them to grip properly.
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 may spread the
strings slightly which will not compromise the quality of the string job.
MAINTENANCE and ADJUSTMENTS
Turntable Bushing Adjustment
The GAMMA 600ES 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.
Tension Calibration Procedure
If you suspect that your 600ES is not pulling
the correct tension, you should check the
tension with a Gamma Tension Calibrator
which provides a measurement of the actual
pulling tension being applied by the ma-
chine.
With the 600ES machine tension set at 20
lbs., place one end of a calibrator equipped
with synthetic string into a string clamp.
Place the opposite end into the string grip-
per and apply tension. If the measured ten-
sion is inaccurate, remove the 2 small caps
from the L.E.D. display cover plate cover. Rotate screw (“L”) in small increments until the
displayed tension matches the tension indicated on the calibrator. Set the machine tension
to 75 lbs. and apply tension to the calibrator. If the measured tension is innacurate, rotate
screw (“H”) in small increments until the displayed tension matches the tension indicated on
the calibrator. Replace the 2 caps in the L.E.D. display cover plate.
H
L
88.8
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12
TROUBLESHOOTING TIPS
PROBLEM SOLUTION
For additional assistance, contact Gamma Sports Customer Service at 1-800-333-0337
Fuse Replacement
To change the fuse, remove the power cord and pull the fuse holder straight out. Remove the
old fuse from the holder and replace it with the supplied spare. Replace the fuse holder into
the machine and check for proper operation.
String tension too tight or too loose - Check tension using a tension calibrator
and adjust machine calibration if
necessary
Electrical system does not function - Check power source
- Check power cord connection
- Check stringing machine fuse
- Call Gamma Sports customer service
String clamp winged lock knob is difficult to
turn
- Check for proper position of thrust
bearing in the base of the winged lock
knob
String clamp slips on base - Clean base of clamp and top of turntable
String slips in gripper - Clean gripper jaws
- Make sure string is wrapped over top
jaw of gripper prior to inserting between
gripper jaws
String slips in clamps - Adjust gap between jaws
- Clean clamp jaws
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.
CARE and CLEANING
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13
PARTS LIST
PART #
1
2
3
4
5
6
7
8
9
11
12
13
14
15
17
21
22
23
24
32
33
36
37
100
101
102
103
DESCRIPTION
ALUMINUM BASE
BASE COVER
TRAY PAD
TURNTABLE BUSHING
RUBBER FEET
CAP SCREW
FOOT NUT
BUSHING SET SCREW
WASHER
TURNTABLE
TURNTABLE PIN
POST LOCK LEVER
WASHER
SUPPORT POST
CAP SCREW
FRAME SUPPORT SLIDE
BADMINTON ADAPTER
TENNIS ADAPTER
KNOB
UPPER GRIPPER JAW
LOWER GRIPPER JAW
GRIPPER JAW SPRING
CAP SCREW
TENSIONER ASSEMBLY
A/C POWER CORD
FUSE HOLDER
5A FUSE
PART #
50
52
53
54
55
56
57
57A
58
59
60
61
62
66
67
67A
68
99
69
70
71
72
73
74
DESCRIPTION
PIVOT PIN
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 / 2.5MM
HEX WRENCH / 3MM
HEX WRENCH / 4MM
HEX WRENCH / 5MM
HEX WRENCH / 6MM
PATHFINDER AWL
STRINGERS AWL
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14
EXPLODED PARTS VIEW
Page 16
15
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
15
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