Video & Articles: Appliance & Equipment RepairHusqvarna String Trimmer On/Off Switch Replacement #545049309

Husqvarna String Trimmer On/Off Switch Replacement #545049309

03:19
This video provides step-by-step instructions for replacing the on/off switch on a Husqvarna string trimmer. The most common reason for replacing the switch is when the engine will not start and testing the switch for continuity proves it is defective.

All of the information in this on/off switch replacement video is applicable to the following brands: Poulan, Husqvarna, Craftsman, Poulan Pro

Tools used: T-25 Torx head screwdriver, flat-head screwdriver

Step By Step Instructions

1
Anncr: repairclinic makes fixing things easy…
2
…with millions of replacement parts available on our website…
3
…and the help you need to do the repair yourself.
4
Since we encourage you to perform this repair safely, a warning icon will appear when you should use caution.
5
Before you replace the on-off switch on your string trimmer…
6
…make sure the engine has cooled.
7
Next, remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
8
Use a t-25 torx bit to unthread the five screws holding the two halves of the throttle housing together.
9
You can leave the clamp screw intact.
10
Use a small flat-head screwdriver to help separate the two halves of the housing.
11
Lift the trigger off of the mounting post.
12
Note the orientation of the on-off switch…
13
…then use the screwdriver to depress the retaining tabs to release it.
14
Disconnect the wires to fully remove the old switch.
15
Install the new on-off switch…
16
…by first connecting the wires to the terminals…
17
…then snap the new switch into place in the housing.
18
Confirm that the short end of the trigger spring is inserted through the hole in the trigger with the hook facing the left side.
19
Realign the trigger on the mounting post…
20
…and place the long end of the spring above the tension pin.
21
Make sure the wires and throttle cable are secured…
22
…then realign the right side of the housing and snap the two halves of the housing together.
23
Rethread and tighten the screws to secure.
24
With the repair completed, reattach the wire and boot to the spark plug…
25
…and your string trimmer should be ready for use.
26
At repairclinic – we make fixing things easy.
27
Thank you for supporting the production of these videos by purchasing your parts from our website.
Description
This video provides step-by-step instructions for replacing the on/off switch on a Husqvarna string trimmer. The most common reason for replacing the switch is when the engine will not start and testing the switch for continuity proves it is defective.

All of the information in this on/off switch replacement video is applicable to the following brands: Poulan, Husqvarna, Craftsman, Poulan Pro

Tools used: T-25 Torx head screwdriver, flat-head screwdriver
Step-By-Step Instructions
1
Anncr: repairclinic makes fixing things easy…
2
…with millions of replacement parts available on our website…
3
…and the help you need to do the repair yourself.
4
Since we encourage you to perform this repair safely, a warning icon will appear when you should use caution.
5
Before you replace the on-off switch on your string trimmer…
6
…make sure the engine has cooled.
7
Next, remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
8
Use a t-25 torx bit to unthread the five screws holding the two halves of the throttle housing together.
9
You can leave the clamp screw intact.
10
Use a small flat-head screwdriver to help separate the two halves of the housing.
11
Lift the trigger off of the mounting post.
12
Note the orientation of the on-off switch…
13
…then use the screwdriver to depress the retaining tabs to release it.
14
Disconnect the wires to fully remove the old switch.
15
Install the new on-off switch…
16
…by first connecting the wires to the terminals…
17
…then snap the new switch into place in the housing.
18
Confirm that the short end of the trigger spring is inserted through the hole in the trigger with the hook facing the left side.
19
Realign the trigger on the mounting post…
20
…and place the long end of the spring above the tension pin.
21
Make sure the wires and throttle cable are secured…
22
…then realign the right side of the housing and snap the two halves of the housing together.
23
Rethread and tighten the screws to secure.
24
With the repair completed, reattach the wire and boot to the spark plug…
25
…and your string trimmer should be ready for use.
26
At repairclinic – we make fixing things easy.
27
Thank you for supporting the production of these videos by purchasing your parts from our website.

Applicable Product Model

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