Video & Articles: Appliance & Equipment RepairHonda Lawn Mower Replace Engine On/Off Switch #35120-Z8D-901

Honda Lawn Mower Replace Engine On/Off Switch #35120-Z8D-901

02:58
This video provides step-by-step repair instructions for replacing the on/off switch on a Honda small engine. The most common reasons for replacing the on/off switch are when the switch doesn’t snap firmly into the “on” and “off” positions, the engine stops during operation, or the engine won’t start at all.

All of the information for this on/off switch replacement video is applicable to the following brands:
Honda

Tools needed: 10mm socket and socket wrench, flathead screwdriver, pliers, needle-nose pliers

Step By Step Instructions

1
Before you replace the engine on/off switch first make sure the engine has cooled.
2
Next, you should remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
3
Now remove the nuts securing the recoil starter to the engine.
4
Pull the starter off.
5
Now lift off the engine cover and fuel tank and set them aside.
6
Be aware that some fuel may spill.
7
Next, remove the bolts to release the control mounting plate.
8
Use a small flathead screwdriver to help pry off the on/off switch.
9
Use pliers to release the wire retainer.
10
Detach the wire from the ignition coil and remove the old switch.
11
Prepare the new engine on/off switch for installation by first transferring the wire retainer from the old part to the new one.
12
Now bend the top edge of the grounding strap down.
13
Connect the wire to the ignition coil and snap the wire retainer into the control mounting plate.
14
Now hook the grounding strap onto the mounting plate and snap the new switch into place.
15
Realign the plate and secure it with the bolts.
16
Replace the engine cover and fuel tank on the engine.
17
Reinstall the recoil starter by aligning it on the mounting posts. then thread the nuts on to secure.
18
You’re now ready to reattach the wire and boot to the spark plug and confirm that the engine runs properly.
Description
This video provides step-by-step repair instructions for replacing the on/off switch on a Honda small engine. The most common reasons for replacing the on/off switch are when the switch doesn’t snap firmly into the “on” and “off” positions, the engine stops during operation, or the engine won’t start at all.

All of the information for this on/off switch replacement video is applicable to the following brands:
Honda

Tools needed: 10mm socket and socket wrench, flathead screwdriver, pliers, needle-nose pliers
Step-By-Step Instructions
1
Before you replace the engine on/off switch first make sure the engine has cooled.
2
Next, you should remove the wire and boot from the spark plug to prevent the engine from accidentally starting.
3
Now remove the nuts securing the recoil starter to the engine.
4
Pull the starter off.
5
Now lift off the engine cover and fuel tank and set them aside.
6
Be aware that some fuel may spill.
7
Next, remove the bolts to release the control mounting plate.
8
Use a small flathead screwdriver to help pry off the on/off switch.
9
Use pliers to release the wire retainer.
10
Detach the wire from the ignition coil and remove the old switch.
11
Prepare the new engine on/off switch for installation by first transferring the wire retainer from the old part to the new one.
12
Now bend the top edge of the grounding strap down.
13
Connect the wire to the ignition coil and snap the wire retainer into the control mounting plate.
14
Now hook the grounding strap onto the mounting plate and snap the new switch into place.
15
Realign the plate and secure it with the bolts.
16
Replace the engine cover and fuel tank on the engine.
17
Reinstall the recoil starter by aligning it on the mounting posts. then thread the nuts on to secure.
18
You’re now ready to reattach the wire and boot to the spark plug and confirm that the engine runs properly.

Applicable Product Model

Parts Needed
Switch
Switch
$9.80
Recommended Tools and Accessories
Fuel Tank
Fuel Tank
$31.52
Fuel Tank
Fuel Tank
$54.38
Total$0.00

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