PENTA Premium Stringer 7600 User manual

7600/8600 STRINGING MACHINE
USER’S MANUAL

ANATOMY
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1. Machine Body along Tension-Head Assembly
2. Table Top Base
3. Tennis Swivel Clamp
4. Swivel Clamp Base
5. Side Support
6. Side Support Arm Adjustment Knob
7. Center Support Adjustment Knob
8. Mounting Stock
9. Turntable
10. Mounting Stock Locking Knob
11. Rubber Cover
12. Side Support Arm
13. Center Support
14. Turntable Track
15. Tension Head Rail
16. Height Adjustment Knob
17. Brake
18. Entry-Part
19. Column
20. Base
21. Rubber Feet
22. String Gripper
23. Tension Locking Lever
24. Tension Setting Knob
25. Tension Head Housing
26. Tension Head Handle/Crank
27. Stopper
28. Scale Sticker

ASSEMBLY
Step 1 :
Adjust the machine body to the desired height and lock in place with the height
adjustment knob.
Step 2 :
Unlock the turntable by loosening the brake.
Step 3 :
Insert two string clamps into the string clamp bases and four side supports in the holes of
the side support arms.

Step 4 :
Unlock the tension head by pushing the tension head by pushing the tension locking lever
back into catch.. Rotate the crank/handle counter-clockwise to slide the tension head to
get closed to the racquet mount.

MOUNTING THE RACQUET FRAME
1. Begin by turning the black (side support adjustment) and chromed (center support
adjustment) knobs on the two mounting stocks counterclockwise to open the side
support arms and reduce the spread of the vertical supports.
2. Spread the mounting stocks so that the vertical centers supports fit within
the racquet head without touching it. The stocks are loosened from below the
turntable.
3. Locate the center points of the racquet at the head and throat and place them
next to the vertical supports on the mounting stocks. The turntable indicate
which stock the head and throat go on.
4. Turn the black side support arm adjustment knobs on each mounting stocks
clockwise to bring the side supports in contact with the racquet at all four points.
Note that the racquet levels and centers itself as the side supports cradle it.
Do not over tighten.
5. Now turn the chromed knob clockwise to tighten the vertical supports.
Ensure that the supports fit between the grommets in the center of the racquet.
Do not over tighten or the racquet may be difficult to remove at the end of
the string job.
An exclusive W-adapter is installed on your 7000 to spread stringing loads over
a wider area of the racquet at the head and throat. In cases where the W-adapter
doesn’t fit between the grommets of tennis racquet frame, it can be replaced with
a traditional straight support (I-adapter).

STRINGING INSTRUCTION
Please consult the stringing instructions from each racquet manufacturer for correct
stringing patterns and tensions.
1). STARTING POSITION
Move the tension head to
starting position for stringing.
Slide the tension head so that
with the handle up, the string
gripper comes within 1” to 2”
of the head straight center support.
This can be accomplished by
moving the lever on the bottom
of the tension head forward and
tipping the assembly back.
2). SETTINGTENSION
Set the tension by turning
the tension setting knob until
the desired tension is alignment
on both the scale and collar.
Fox example, to set tension
for 62 pounds, the tension scale
should read between the 60 & 66
LBS mark and the collar should
read 2 pounds with the number
lining up with the outside edge
of the flange. We recommend
that you return the tension to 9
pounds when not using the
machine.

3). PULLINGTHE STRINGS
To pull the string, continue rotating the tension head handle backward until
the tension lever clicks out. This clocks the tension head to tension arm.
4). RELEASINGTHE STRINGS
To release the string after clamping, hold on to tension head and push the
tension locking lever back up into the catch on the string gripper.

5). ADJUST STRING CLAMPTO THE CORRECT HOLDING PRESSURE
*If gripper of the string clamp is over tension, turn the thumb wheel adjustment
of the string clamp counterclockwise to the correct tension by needle nose pliers
or fingers adjusting directly.
*If gripper of the string clamp doesn’t hold string well, turn the thumb wheel
adjustment of the string clamp clockwise to the correct tension by needle nose pliers
or fingers adjusting directly.
Needle Nose Pliers Adjustment
Fingers Adjustment

6). ADJUST THE BASE OFTHE SWIVELCLAMPTO THE CORRECT
HOLDING PRESSURE
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CALIBRATION
1. Set the tension scale on 60 lbs and the collar on 0. Place a string attached
to a tension calibrator in string gripper. Tension calibrator will indicate
the pounds of tension on tension head under actual stringing conditions.
Pull string until the locking lever releases. If it releases before 60 lbs or after
60 lbs., the following adjustment is needed. CAUTIION: Be sure to
release string holding tension calibrator. You are now ready for adjustment.
Electronic
Calibrator:
Manual
Calibrator:

2. Loosen the safety screw A. If the locking lever release before 60 lbs.,
turn the adjustment screw B counterclockwise until the scale reading
matches the calibrator’s; if the locking lever release after 60 lbs.,
turn the adjustment screw B clockwise. WARNING: Be sure to tighten
the safety screw A after the adjustment has been made.

MAINTENANCE
1. The stringing machine is adjusted and calibrated properly before shipping.
It is designed to work snugly and be relatively maintenance-free.
2. Always keep the stringing machine in a clean and safe place.
Keep it away from dust, grease, moisture and any source of heat.
3. Clean the stringing machine often enough to prevent dust or dirt from accumulating in
or on it. Clean the dust from the outside of the stringing machine by cleaning the
surface with a soft cloth or brush. The brush will remove dust from around the
tension indicator.
4. Hardened dirt or grease may be removed with a cotton-tipped applicator dampened
with a solution of mild detergent and water.
5. Do not allow water to get inside the tension head.
6. Do not clean any plastic materials with organic cleaning solvents (such as benzene,
toluene, acetone, or similar compounds); they may damage the plastic.
7. Do not use liquid cleaners, abrasive cleaners or aerosol cleaners.
8. Use the isopropyl alcohol and the soft & clean cloth to clean the posts of the string
clamps, the tracks of the turntable, and the string gripper.
9. Use a cotton-tipped applicator dampened with isopropyl alcohol to clean the inside of
the clamp holder’s tube.
10. Use fine emery cloth to remove the wax buildup from the jaws of the string clamps
and the string gripper. Use a cotton-tipped applicator dampened with isopropyl
alcohol to clean the debris away.
11. Do not use the sandpaper to remove the wax buildup from string clamps and the
string gripper.
12. Use a light machine oil, such as sewing machine oil to lubricate the posts of the
string clamp and the tracks of the turntable after cleaning.
13. Do not lubricate the brake.
14. Do not use penetrating oils to clean or to lubricate.
15. Check the string clamps often to ensure that they hold the string properly.
16. Reset the tension setting to 9 pounds after stringing.