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Lawn Mower Blades Won't Engage

The 2 most common part(s) or condition(s) which cause the symptom Lawn mower blades won't engage are listed below starting with the most likely. Check or test each item and watch any available videos.


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To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

PTO Clutch

If the blades don't rotate the electric PTO clutch might not be engaging. The PTO - or Power Take Off clutch provides a non-mechanical way to disconnect the engine from the blades. When electricity is applied to the clutch solenoid the clutch engages. Attached to the clutch is a pulley, a belt from the engine crankshaft pulley to the PTO provides the rotation of the blades. If power doesn't reach the PTO, or if the solenoid is defective, or if the clutch is worn out, the blades will not engage. The PTO clutch is not repairable, if defective or worn out it will need to be replaced.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

To see parts for your lawn mower, you need to enter your model number on the right. The system will then display parts that are associated with your lawn mower.

PTO Switch

The PTO switch provides power to the PTO clutch. If the switch is defective or doesn't have continuity, power might not be supplied to the PTO clutch and then it won't engage and the blades don't rotate. Check the switch with an Ohm meter for continuity.

Enter your model number for the best repair help results:


What is a model number, and where do I find it?

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