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EGO ST1500E Repair Manual Line
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EGO ST1500E Repair Manual Line

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REPAIR GUIDELINE
String Trimmer_ST1500E
Version: 1
Issue Date: 02/27/2015

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Summary of Contents for EGO ST1500E

  • Page 1 REPAIR GUIDELINE String Trimmer_ST1500E Version: 1 Issue Date: 02/27/2015...
  • Page 2 Table of Contents Contents Page Troubleshooting Tool list Part 1: Replace the motor Assembly 5-28 Part 2: Replace the PCBA 29-40...
  • Page 3 Troubleshooting Fault Problem Possible Cause Test & Solution Position Replace the cutting line. (e.g. 2.4mm Not feed line Poor cutting line trimmer line nylon line) The cables that connect to motor are Open the motor housing, check the Motor loosed or fallen off from motor. cable connection with motor.
  • Page 4 Tool List For Repair Tool List SPEC Remark Magnetic bits #1 , #2 phillips Socket wrench 13mm Hex wrench Electric soldering iron Heat gun Heat shrinkable sleeves Scissors To remove the shrinkable sleeve...
  • Page 5 Part 1: Replace the Motor Assembly...
  • Page 6 Replace the Motor 1. Stop the motor and remove the battery pack from the string trimmer. 2. Loosen the two bolts in the guard with the M5 hex wrench, remove the guard from the shaft. Guard Assembly Description Part Number SPEC bolt Guard Assembly...
  • Page 7 Replace the Motor Press the release tabs on the upper housing to remove the spool and spool retainer. Spool retainer Release tab spool Description Part Number Spool 3127635000 Spool retainer 2824019000...
  • Page 8 Replace the Motor Hold the bump knob and pull it straight out; remove the bump knob, compression spring, washer from the trimmer head base. Trimmer head base PULL compression spring bump knob Description Part Number Bump knob 2824022000 washer compression spring 3660582000 washer 5650349000...
  • Page 9 Replace the Motor Wear gloves and hold the trimmer head base with one hand, use a 13mm manual socket wrench to turn the hexagon nut counterclockwise to loosen it. hexagon nut...
  • Page 10 Replace the Motor 6. Hold the trimmer head base and pull it straight out from the motor shaft. Remove the flange from the base. Pull Trimmer head base Description Part Number Hexagon nut Hexagon nut & Motor shaft &flange set 2824010000 flange set Trimmer head...
  • Page 11 Replace the Motor 7. Loose the three screws on the shield cover, remove the shield cover from the motor assembly. Shield cover washer Screw Description Part Number Including Spool, spool retainer, bump knob, Trimmer Head 2824021000 compression spring, washer, trimmer head base Shield cover 3127655000...
  • Page 12 Replace the Motor Loosen the screws in the rear housing (7 screws) and handle (7 screws), remove the housings, upper cover and lower cover. Upper cover Lower cover Description Part Number Qty. Description Part Number Qty. Tapping Screw 5610032000 Upper cover 3127650000 Lower cover 3127675000...
  • Page 13 Replace the Motor Loosen the two locking screws on the fixing rings, take out the shaft from the housings. Internal Cables Description Part Number Qty. in the shaft Fixed Ring 3705178000 Plain Washer 5650005000 Tapping Screw 5610032000 Internal Cables 4860285000 Assembly...
  • Page 14  Remark: There are two kind of the internal cables assembly for this string trimmer ST1500E. They have different color assortment. Below separate them with structure A and structure B: 1. Structure A: The colors of the internal cables assembly is black, red and blue.
  • Page 15  Correct connection: Between the cables of the PCBA and the Internal cables in the shaft; Between the cables of the Motor Set and the Internal cables in the shaft; 1. Structure A: The cable colors of The cable colors of The cable colors of Table A the PCBA...
  • Page 16  Correct connection: Between the cables of the PCBA and the Internal cables in the shaft; Between the cables of the Motor Set and the Internal cables in the shaft; 2. Structure B: The cable colors of The cable colors of The cable colors of Table B the PCBA...
  • Page 17  Notice: If the Internal Cables are broken, no matter the Internal Cables are Structure A (black, red and blue) or Structure B (black, red and brown), replace them with Structure A (black, red and blue).
  • Page 18 Replace the Motor 10. Remove the heat-shrinkable sleeves from the connectors with a scissors. 11. Move the transparent sleeve aside, and pull the connectors to separate. heat-shrinkable sleeve transparent transparent sleeve sleeve...
  • Page 19 Replace the Motor 12. Take out the motor assembly from the motor housing; 13. remove the heat-shrinkable sleeves from the cables and disconnect the cables. Motor assembly Motor housing Motor assembly...
  • Page 20 Replace the Motor 14. Replace with a new motor assembly. 15. The motor housing can be replaced as well if it is broken or worn. 16. Place new heat-shrinkable sleeves through the cables. Connect the cables with electric soldering iron. Correct connection: See Table A or Table B in slide 15-16. Motor housing Motor set Description...
  • Page 21 Replace the Motor 17. Move the heat-shrinkable sleeves to cover the soldering points and use a hot air gun to shrink the sleeves. 18. Position the motor assembly into the motor housing; mount the shield cover on the motor assembly and lock it with three screws and washers. shield cover...
  • Page 22 Replace the Motor 19. Assemble the trimmer head set onto the motor shaft. a) Position the flange into the trimmer head base;  Notice: the flat surface of the flange should be rested on the trimmer head base. Trimmer head Flange Correct base...
  • Page 23 Replace the Motor b) Mount the trimmer head base together with the flange onto the motor shaft, lock the base with the hexagon nut.
  • Page 24 Replace the Motor Fix the washer into the trimmer head base. d) Align the ribs in the bump knob with the slots in the trimmer head base, fix the bump knob onto the base. e) Press the bump knob until it is fully slid in position and locked by the base.
  • Page 25 Replace the Motor Put the spool in the spool retainer and mount the spool retainer to the trimmer head base.
  • Page 26 Replace the Motor 20. Assemble the connectors in the rear housing. a) Place new heat-shrinkable sleeves through the connectors. b) Plug the three connectors and make sure they are fully insert in place. Correct connection: See Table A or Table B in slide 15-16. Move the transparent sleeves and the heat-shrinkable sleeves to cover the connectors and use a hot air gun to shrink the sleeves.
  • Page 27 Replace the Motor 21. Align the cables in the grooves of the rear housing. Notice: the black cable must be aligned as followed in the figure below. Cable alignment...
  • Page 28 Replace the Motor 22. Position the shaft in the rear housing and handle housing, lock it by the fixed rings with the tapping screws. 23. Close the handle housing, put the support leg and upper cover into position, then close the rear housing, lock the housings with 14 tapping screws.
  • Page 29 Part 2: Replace the PCBA...
  • Page 30 Replace the PCBA 1. Loosen the screws in the rear housing (7 screws) and handle (7 screws), remove the housings, upper cover and lower cover. Upper cover Lower cover Description Part Number Qty. Description Part Number Qty. Tapping Screw 5610032000 Upper cover 3127650000 Lower cover...
  • Page 31 Replace the PCBA 2. Loosen the two locking screws on the fixed rings, take out the shaft from the housings. Fixed ring Internal Cables Description Part Number Qty. in the shaft Fixed Ring 3705178000 Plain Washer 5650005000 Tapping Screw 5610032000 Internal Cables 4860285000 Assembly...
  • Page 32 Replace the PCBA Remove the heat-shrinkable sleeves from the connectors with a scissors. 4. Move the transparent sleeve aside, pull the connectors to separate. heat-shrinkable sleeve transparent transparent sleeve sleeve...
  • Page 33 Replace the PCBA Take out the PCBA from the housings. Replace it with a new PCBA. 6. The battery release button, latch, battery ejection lever, housings can be replaced if they are broken or worn. PCBA Description Part Number PCBA 2830057000 Battery release 3127201000...
  • Page 34 Replace the PCBA 7. Place new heat-shrinkable sleeves through the connectors. 8. Plug the three connectors and make sure they are fully insert in place. Correct connection: See Table A or Table B in slide 15-16. Move the transparent sleeves and the heat-shrinkable sleeves to cover the connectors and use a hot air gun to shrink the sleeves.
  • Page 35 Replace the PCBA 10. Position the PCBA in the housing, align the cables in the grooves of housing. Notice: the black cable must be aligned as followed in the figure below. Cable alignment Cable alignment Cable alignment Cable alignment...
  • Page 36 Replace the PCBA 11. Position the shaft in the rear housing, lock it by the fixed ring with the tapping screw. 12. Fix the switches into the handle housing, align the cables in the grooves. Switches Cable alignment...
  • Page 37 Replace the PCBA 13. Replace the lock-off trigger or switch trigger if they are broken. Lock-off Trigger Compression spring Switch Trigger Description Part Number Qty. Lock-off Trigger 3127654000 Compression Spring 3660030000 Switch Trigger 3127653000...
  • Page 38 Replace the PCBA 14. Mount the lock-off trigger and switch trigger into the handle housing. 15. Position the shaft in the handle housing, lock it by the fixed ring with the tapping screw. Align the fixing hole in the lock-off trigger with the fixing pole in handle and push the trigger in place Align the fixing hole in the...
  • Page 39 Replace the PCBA 16. Close the handle housing, put the lower cover and upper cover into position, then close the rear housing. (pictures on next page) Notice: the fixing pole in the rear housing and handle housing must align with the fixing hole in the shaft.
  • Page 40 Replace the PCBA 17. Lock the housings with 14 tapping screws.