EGO ST1210E Repair Manual Line Download Page 4 | Manualshive

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Troubleshooting

4

Problem

Possible Cause

Fault
Position

Test & Solution

The motor speed varies up
and down when the
trimmer works.

Motor was burned due to overload

motor

Replace the motor

The carbon brushes were short

Carbon brush Replace the carbon brushes.

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Summary of Contents for ST1210E

Page 1: ...REPAIR GUIDELINE String Trimmer_ST1210E Version 1 Issue Date 2015 03 04...

Page 2: ...Table of Contents 2 NO Contents Page 1 Troubleshooting 3 4 2 Tool list 5 3 Part 1 Replace the motor 6 19 4 Part 2 Replace the carbon brushes 20 23 5 Part 3 Replace the PCBA 24 34...

Page 3: ...string trimmer then release the line and test the speed If thicker line was used replace with 2 0mm line and test the speed Fail to start The cables that connect to motor are loosed or fallen off fro...

Page 4: ...ossible Cause Fault Position Test Solution The motor speed varies up and down when the trimmer works Motor was burned due to overload motor Replace the motor The carbon brushes were short Carbon brush...

Page 5: ...Repair 5 NO Tool List SPEC Remark 1 Magnetic bits 1 phillips 2 Magnetic bits 2 phillips 3 Socket wrench 13mm 4 Electric soldering iron 5 Heat gun 6 Heat shrinkable sleeves 7 Scissors To remove the shr...

Page 6: ...6 Part 1 Replace the Motor...

Page 7: ...1 Remove the guard and bumper protector from the motor housing Description Part Number SPEC Guard Assembly 2824054000 Bumper protector 3650148000 Replace the Motor 7 bumper protector guard...

Page 8: ...8 Replace the Motor 2 Press the release tabs to remove the spool and spool retainer Release tab spool Spool retainer Description Part Number Spool 3127635000 Spool retainer 2824019000...

Page 9: ...knob and pull it straight out remove the bump knob compression spring washer from the trimmer head base compression spring washer Trimmer head base PULL Description Part Number Bump knob 2824022000 co...

Page 10: ...10 Replace the Motor 4 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 and remove it hexagon nut...

Page 11: ...the motor shaft Remove the flange from the base Take out the plain washer from the motor shaft Pull Description Part Number Trimmer head base 2824082000 Flange 3520816000 Hexagon nut 5630271000 Plain...

Page 12: ...6 Remove the 6 screws in motor housing and open the housings Description Part Number SPEC Tapping screw 5610032000 Motor housings 2823769000 Replace the Motor 12...

Page 13: ...7 Remove the two connectors from the connection plates on the motor by pulling them straight out 8 Replace the motor if it was burned Description Part Number DC Motor 2730222000 Replace the Motor 13...

Page 14: ...he two connection plates towards outside 10 Mount two connectors to the connection plates on the motor Align the cables in the grooves Replace the Motor 14 Connection plate Connection plate Black cabl...

Page 15: ...ead to the motor shaft a Mount the plain washer onto the motor shaft b Position the flange into the trimmer head base Replace the Motor Flange Trimmer head base 11 Close the housings and locked with 6...

Page 16: ...16 c Mount the trimmer head base together with the flange onto the motor shaft lock the base with the hexagon nut Replace the Motor hexagon nut...

Page 17: ...Align the ribs in the bump knob with the slots in the trimmer head base fix the bump knob onto the base f Press the bump knob until it is fully slid in position and locked by the base Replace the Mot...

Page 18: ...Replace the Motor 18 g Put the spool in the spool retainer and mount the spool retainer to the trimmer head base spool Spool retainer...

Page 19: ...13 Fix the guard and the bumper protector on the motor housing 14 Test the motor Replace the Motor 19...

Page 20: ...20 Part 2 Replace the Carbon Brushes...

Page 21: ...1 Remove the screw and clamp plate which is used for locking the brush holder Description Part Number Tapping Screw 5610011000 Plain Washer 5650001000 Replace the Carbon Brushes 21...

Page 22: ...ut the spacer 3 Lift up the outside of the brush holder and take out the carbon brush 4 Replace with a new set carbon brush Description Part Number Qty Brush set 2823807000 1 Carbon Brush 4960015000 2...

Page 23: ...crewdriver to pull the carbon brush onto the commutator of the motor 7 Insert the spacer between the brush holder and motor housing bracket 8 Lock the brush holder with tapping screw Replace the Carbo...

Page 24: ...24 Part 3 Replace the PCBA...

Page 25: ...1 Loosen the screws in the rear housing 8 pcs and handle 6 pcs open the housings Replace the PCBA 25 Description Part Number Qty Tapping Screw 5610032000 14...

Page 26: ...king screws take out the lock off trigger switch trigger and connecting Tube from the housings Replace the PCBA 26 Description Part Number Qty Fixed Ring 3705178000 2 Plain Washer 5650005000 2 Tapping...

Page 27: ...er or switch trigger if they are broken Replace the PCBA 27 Description Part Number Qty Lock off Trigger 3127332000 1 Compression Spring 3660453000 1 Switch Trigger 3127331000 1 Lock off Trigger Switc...

Page 28: ...4 Remove the heat shrinkable sleeves from the connectors with a scissors 5 Move the transparent sleeve aside and pull the connectors to separate Replace the PCBA 28...

Page 29: ...n lever housings can be replaced if they are broken or worn Replace the PCBA 29 Description Part Number Qty PCBA 2830069000 1 Battery release button 3127201000 1 Latch 3127202000 1 Battery ejection le...

Page 30: ...Plug the two connectors and make sure they are fully insert in place Correct connection Red to White Black to Black 11 Move the heat shrinkable sleeves to cover the connectors and use a hot air gun to...

Page 31: ...connecting tube in the rear housing lock it with the tapping screw 13 Position the PCBA in the housing align the cables in the grooves of housing Replace the PCBA 31 Cable alignment Cable alignment F...

Page 32: ...14 Fix the switch in the handle housing align the cables in the grooves Replace the PCBA 32 Switch Cable alignment...

Page 33: ...nd put the shaft and switch trigger into the handle housing 16 Fix the lock off trigger into the handle housing Replace the PCBA 33 Align the fixing hole in the trigger with the fixing pole on handle...

Page 34: ...17 Close the rear housing and handle housing Locked the housings with 14 tapping screws Replace the PCBA 34...

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