Yamato CZ8000 Instruction Manual Download Page 1

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Thank you for purchasing the Model CZ8000 class.

Before using your machine, please read the instruction
manual and understand the contents well.

After reading the instruction manual, please keep it in a lo-

cation where it is easily accessible to the operator.

CZ8000 class

SUPER HIGH SPEED OVERLOCK

Instruction Manual

Summary of Contents for CZ8000

Page 1: ...sing your machine please read the instruction manual and understand the contents well After reading the instruction manual please keep it in a lo cation where it is easily accessible to the operator C...

Page 2: ......

Page 3: ...and rotating direction of pulley 6 4 Lubrication 7 4 1 Lubricating oil 7 4 2 Lubricating 7 4 3 Changing oil 8 4 4 Checking and replacing oil filter 8 5 Proper operation 9 5 1 Needle system 9 5 2 Insta...

Page 4: ...relation between lower looper and upper looper 26 6 7 Needle and needle guards 26 6 7 1 Needle and needle guard rear 26 6 7 2 Needle and needle guard front 26 6 8 Position of presser foot 27 7 Specifi...

Page 5: ...r any third party mishandles the machine or does not avoid the dangerous situation when operating or maintaining the machine CAUTION This indication is given when there is a potential danger of medium...

Page 6: ...dents If any of the labels has become stained or come unstuck be sure to replace it with a new one 2 2 Working environment The environment in which our industrial sewing machines are used may seriousl...

Page 7: ...or leaving the machine Be sure to remove the power plug by holding the plug section instead of the cord section in order to prevent electrical shock earth leakage or fire accidents If the machine is...

Page 8: ...operly as required by law If you have further questions on its disposal consult the place of purchase After opening the oil container be sure to seal it to prevent dust and water from getting into the...

Page 9: ...sure to turn off the power Also if the sewing machine malfunctions makes abnormal sound or emits unusual odors while operating be sure to turn off the power supply switch While operating the machine...

Page 10: ...operate with the eye guard opened Finger guard The finger guard prevents the operator s fingers from going under the needle However there is some space at the top of the finger guard and other section...

Page 11: ...0 1 Name of each part Fig 1 1 Oil cap Presser foot Drain hole screw Cloth plate Presser foot release lever Finger guard Oil reservoir Eye guard SP device behind Eyeguard Thread tension spring cap Fron...

Page 12: ...ram 2 Installation Fig 2 1 Center of crank shaft Center of machine pulley operator Installing hole for motor Table dimensions 1200 540 40 mm Section X X Section Y Y Section Z Z Refer to the instructio...

Page 13: ...Fig 2 2 and 2 3 Table 1 The number of spacers and Size of spacers 15 5 Fig 2 3 2 Installation rubber cushion Fig 2 2 supporting board rubber cushion chute upper support chute supporting board machine...

Page 14: ...s based on the com mercial pulleys at intervals of 5 Fig 2 4 Table 2 V belt of M type Servomotor Calculate the outside diameter of a motor pulley from the formula as below Or see Table 3 to select a p...

Page 15: ...e use ALWAYS install the eye guard and the finger guard on the prescribed position dur ing operation 2 3 Hanging belt Use the V belt of M type 1 Hang the belt on the machine pulley and then on the mot...

Page 16: ...on of pulley The maximum sewing speed is 8000 sti min Run a new machine at speed about 15 20 lower than maximum speed during the first 200 hours for about one month so that a machine can offer a long...

Page 17: ...a machine which has not been run for a while supply few drops of oil to the needle bar and the looper bar Remove the oil cap indicated OIL IN and supply oil to the upper line of the oil sight gauge Ma...

Page 18: ...achine on the machine table 9 Hang the V belt on the motor pulley and reinstall the belt cover See page 5 Be careful the oil may spill out from the oil filter when loosening the screw 4 Lubrication 4...

Page 19: ...e installing the needles ALWAYS turn the mo tor switch OFF and check that the motor has already stopped 1 Loosen the screw with a minus screw driver Fig 5 1 2 Remove the old needle with a pair of twee...

Page 20: ...tension turn caps counterclock wise Fig 5 4 Threading Table 5 Loosen Tighten Before threading ALWAYS turn the motor switch OFF and check that the motor has already stopped Improper threading can cause...

Page 21: ...rew clockwise To decrease the pressure turn the adjusting screw counterclockwise Keep the pressure as low as possible for stable stitch Rotate the machine pulley and position the needle at the highest...

Page 22: ...e left while press ing the lever For closing shift it to the right Make sure that it has been locked securely Loosen the lock nut and adjust the differential feed lever Moving up will make stretching...

Page 23: ...gth for one stitch Actual stitch length may different from the length on graduations It may changes depending on the application type weight of material or the differential ratio 1 Rotate the pulley w...

Page 24: ...ic fabric Fig 5 11 SP device Fig 5 12 HR device Use dimethyl silicone oil Check the oil amount in SP tank If not enough supply the oil into the hole Open the oil container plug of HR device and check...

Page 25: ...re thread correctly Make sure there is no slack Check that the thread hanger is right above the spool seat discs of the thread stands the thread stands should be fixed securely 2 Check the lubricating...

Page 26: ...et position the center of the screw with the marks To set the standard position of the needle thread pull off align the portion with the eye of the needle thread eyelet right when the needle thread pu...

Page 27: ...er thread tension for overlock stitch The standard setting of each looper thread eyelet To tighten the thread tension move each thread eyelet or thread pull off in the direction T To loosen the thread...

Page 28: ...older as desired in the direction N 3 Loosen the screw 4 Tighten the screw with applying the upper knife to the lower knife 5 Loosen the screw 6 The lower knife touches the upper knife closely with it...

Page 29: ...nife flat type Loosen the screw to install the edge of the lower knife on a level with the top surface of the stitch plate or 0 0 3 mm lower than it Loosen the screw to make the engagement between the...

Page 30: ...between the upper and the lower knives while rotating the machine pulley by hand If the lower knife cuts badly re sharpen it See Fig 6 9 The upper knife made of super hard alloy is unnecessary to re s...

Page 31: ...titch plate Make the height between the top of the stitch plate and the rear side of the main feed dog to 0 8 mm when the feed dog is at the highest point Install the auxiliary feed dog 0 5 mm lower t...

Page 32: ...eight of needle 2 Installation angle of lower looper 3 Fix the distance between needle and lower looper the front and rear position of lower looper temporarily 4 Parallel of needles 5 Front and rear p...

Page 33: ...and the center of the needle to 3 3 3 8 mm Loosen the screw on the lower looper holder to adjust it 1 Tighten the screw with a tightening torque of 1 5 N m 2 Check the parallel setting of the needles...

Page 34: ...edle overlock stitch on CZ8020 1 Loosen the screw to make the clearance between the lower looper tip and the left needle to 0 0 05 mm while loosening the screw 2 Make sure that the clearance between t...

Page 35: ...ort the looper thread eyelet and the looper holder cover 2 Loosen the screw of the upper looper bar crank arm to adjust it The thick portion around eye of the upper looper closes to the needle when th...

Page 36: ...h is interlocked with the lower looper The needle guard rear holds the needle from the rear and protect the lower looper tip when the needle meets the lower looper tip during upward movement process f...

Page 37: ...parallel to the stitch plate when looking from the front Slanted presser foot can cause feed scratch mark To set back and forth position adjust the clearance be tween needle drop of the presser foot...

Page 38: ...Differential Gathering 1 2 3 Available up to 1 3 0 by adjusting the position of the lever pin Max Reverse Differential Stretching 1 0 7 Available up to 1 0 6 by adjusting the position of the lever pin...

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Page 40: ...ted in 2012 9 Printed in China 2012 9 CZ8000 YAMATO SEWING MACHINE NINGBO CO LTD No 641 WEST HENGSHAN ROAD ECONOMIC TECHNICAL DEVELOPMENT ZONE BEILUN NINGBO P R CHINA P C 315800 Tel 86 574 8680 0888 F...

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Yamato CZ8000, Instruction Manual

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