EGO ST1300E User manual

REPAIR GUIDELINE
String Trimmer_ST1300E
Version: 1
Issue Date: 02//2016

Table of Contents
2
NO.
Contents
Page
1
Troubleshooting
3
2
Tool list
4
3
Part 1: Replace the motor assembly
5-26
4
Part 2: Replace the PCBA
27-37

Troubleshooting
3
Problem
Possible Cause
Fault
Position
Test & Solution
Not feed line
Poor cutting line
Trimmer line
Replace the cutting line. (e.g. 2 mm
nylon line)
Fail to start
The cables that connect to motor are
loosed or fallen off from motor.
Motor
Open the motor housing, check the
cable connection with motor.
Motor is burned
Motor
If the cables are well connected, check
the motor and test with a new motor.
PCBA is broken
PCBA in rear
housing
If the cables are well connected, and
motor is functional, replace the PCBA in
the rear housing.
The battery pack is not
stayed/locked on the
trimmer properly; or hard to
remove from the trimmer.
The locking mechanism is worn.
Rear housing
Replace the rear housing set.
The motor speed varies up
and down when the
trimmer works.
Motor was burned due to overload
Motor
Replace the motor

Tool List For Repair
4
NO.
Tool List
SPEC
Remark
1
Magnetic bits
#1 , #2 phillips
2
Socket wrench
13mm
3
Hex wrench
M5
4
Electric soldering iron
5
Heat gun
6
Heat shrinkable sleeves
7
Scissor
To remove the shrinkable sleeve

5
Part 1: Replace the Motor Assembly

1. Stop the motor and remove the battery pack from the string trimmer.
2. Loosen the two combination screws in the guard with the M5 hex wrench, remove the guard from the
shaft base.
Description
Part Number
Guard assembly
2824273001
Combination screws
5620526001
Replace the Motor
6
Combination screws
Guard
assembly
Combination
screws

Spool retainer
Spool
3. Press the two release tabs on the trimmer head base, pull the spool and spool retainer out.
7
Replace the Motor
Description
Part Number
Spool
2824055002
Spool Retainer
2824019002
Release tab

8
Replace the Motor
4. Hold the bump knob and pull it straight out. Remove the bump knob, compression spring and
washer from the trimmer head base.
Description
Part Number
Bump Knob
2824022001
Compression Spring
3660582001
Washer
5650349002
PULL
Compression spring
Washer
Trimmer head
base
Bump knob

9
Replace the Motor
5. 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

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.
Description
Part Number
Outer Flange
3520800001
Hexagon Nut
5630271001
Trimmer Head Base
2824082003
Hexagon nut
Trimmer head base
Motor shaft
Outer flange
Pull

11
Replace the Motor
Description
Part Number
Including
Trimmer Head Set
2824421001
Spool, spool retainer, bump knob, compression
spring, washer, trimmer head base, hexagon nut
Shield Cover
3127655001
Screw
5610059007
Washer
5650396003
7. Loosen the three screws on the shield cover, remove the shield cover from the motor assembly.
Shield cover
Screw
Washer

8. Loosen the eleven screws in the rear housing set, open the housing.
NOTICE: During opening, the two spring pins may be remained in the right housing. If the rear
housing set need replacing, take down the pins and assemble them to the new housing.
12
Description
Part Number
Qty.
Tapping Screw
5610032004
11
Spring Pin
5670011001
2
Rear Housing Set
2824291001
1
Replace the Motor
Rear housing set Spring Pin

9. Loosen the locking screw on the fixing ring, take out the shaft from the housings.
13
Description
Part Number
Qty.
Fixed Ring
3705178001
1
Plain Washer
5650005002
1
Tapping Screw
5610032004
1
Internal Cable
Assembly
4860300002
1
Replace the Motor
Internal cables in
the shaft

10. Remove the heat-shrinkable sleeves from the connectors with a scissor.
11. Move the transparent sleeves aside, and pull the connectors to separate.
14
Replace the Motor
Transparent
sleeve
Heat-shrinkable
sleeve

15
12. Take out the motor from the motor housing.
13. Remove the heat-shrinkable sleeves from the cables and disconnect the cables.
Replace the Motor
Motor housing
Motor

16
14. Replace with a new motor. The motor housing can be replaced as well if it is broken or worn.
15. Place new heat-shrinkable sleeves through the cables. Connect the cables by electric soldering iron.
Correct connection: Black to black, white to white, green to blue.
Replace the Motor
Description
Part Number
Qty.
Motor Housing
3421371001
1
DC Motor
2730228001
1
Motor housing Motor
Cables of the motor
Internal Cables Heat-shrinkable sleeves

17
16. Move the heat-shrinkable sleeves to cover the soldering points and use a hot air gun to shrink
the sleeves.
Replace the Motor
17. Position the motor into the motor housing. Mount the shield cover on the motor assembly and
lock it with three screws and washers.
Shield cover

18
18. 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.
Replace the Motor
Outer flangeTrimmer head base Correct direction

19
b) 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

20
c) Mount 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 on the base.
Replace the Motor
Washer
Align the ribs with
slots in the base