EGO Power ST1500E-F User manual

REPAIR GUIDELINE
String Trimmer_ST1500E-F
Version: 1
Issue Date: 12/02/2016

Table of Contents
2
NO.
Contents
Page
1
Troubleshooting
3
2
Tool list
4
3
Part 1: Replace the Motor Assembly
5-28
4
Part 2: Replace the PCBA
29-42

Troubleshooting
3
Problem
Possible Cause
Fault
Position
Test & Solution
Not feeding line
Poor cutting line
Trimmer line
Replace the cutting line. (e.g. 2.4mm
nylon line)
Hard to wind up line
Support of the lower housing
assembly is worn
Lower
housing
assembly
Replace the lower housing assembly
Not cutting line
Blade on the guard assembly is worn
Guard
assembly
Replace the guard assembly
Fail to start
The cables that connect to motor are
loose or disconnected 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
connected to 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
Phillips
PH2
2
Socket wrench
14mm
3
Torx screwdriver
T-15
4
Hex wrench
M5
5
Electric soldering iron
6
Heat gun
7
Heat shrinkable sleeves
8
Scissors
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 hex bolts in the guard with the M5 hex wrench, remove the guard from the shaft.
Description
Part Number
Guard Assembly
2824871002
Hex Bolt
5620216003
Spring Washer
5650015012
6
Bolts
Guard
assembly
Hex bolt
Spring washer
Replace the Motor Assembly

3. Press the release tabs on the lower housing assembly to remove the lower housing assembly.
7
Description
Part Number
Qty.
Lower Housing
Assembly
2824808001
1
Release tab
Replace the Motor Assembly

4. Pull the spring out of the motor shaft .
8
Replace the Motor Assembly

5. Rotate the nut counterclockwise to remove the nut.
9
Replace the Motor Assembly

6. Pull washer out of the motor shaft.
10
Replace the Motor Assembly

7. Pull the upper housing assembly out of the motor shaft and then pull the outer flange out of
the motor shaft.
11
Replace the Motor Assembly

12
Description
Part Number
Qty.
Shield cover
3127655001
1
Screw
5610059007
1
washer
5650396003
1
8. Loosen the three screws on the shield cover, remove the shield cover from the motor
assembly.
Shield cover
Screw
Washer
Replace the Motor Assembly

9. Loosen the screws in the rear housing (7 screws) and handle assembly (7 screws), remove the
housings, upper cover and lower cover.
13
Description
Part Number
Qty.
Tapping Screw
5610294001
14
Upper cover
3127650001
1
Lower cover
3127675002
1
Upper cover
Lower cover
Spring pin
Replace the Motor Assembly

10. Loosen the two locking screws on the fixing rings, take out the shaft from the housings.
14
Description
Part Number
Qty.
Fixed Ring
3705178001
2
Plain Washer
5650005002
2
Tapping Screw
5610294001
2
Replace the Motor Assembly

11. Remove the heat-shrinkable sleeves from the connectors with a scissor.
12. Move the transparent sleeves aside, and pull the connectors to separate.
15
Heat-shrinkable sleeve Transparent sleeve
Replace the Motor Assembly

16
13. Take out the motor assembly from the motor housing.
14. Remove the heat-shrinkable sleeves from the cables and disconnect the cables.
Motor housing Motor assembly
Motor assembly
Replace the Motor Assembly

17
15. Replace the damaged motor with a new one.
16. The motor housing can be replaced as well if it is broken or worn.
17. Place new heat-shrinkable sleeves over the cables. Connect the cables with electric soldering
iron. Correct connection: White to White, Black to Black, Blue to Green.
Replace the Motor Assembly
Blue
Green
Black
Black
White
Description
Part Number
Qty.
Motor housing
3421602001
1
Motor set
2730220001
1
Motor housing
Motor set

18
18. Move the heat-shrinkable sleeves to cover the soldering points and use a hot air gun to shrink
the sleeves.
shield cover
Replace the Motor Assembly
19. Position the motor assembly into the motor housing; mount the shield cover on the motor
assembly and lock it with three screws and washers.

20. Put the outer flange onto the shaft and then put the upper housing assembly onto the shaft.
19
Replace the Motor Assembly

21. Mount washer onto the motor shaft.
20
Replace the Motor Assembly