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Mr. Michael KimAug 2, 2025
What to do if my Gravely Promaster 320 Lawn Mower won’t engage?
- BBenjamin DavisAug 2, 2025
If your Gravely Lawn Mower won’t engage, here are a couple of potential reasons: First, the attachment might be blocked. To solve this, stop the unit, remove the key, and clear the attachment. Second, the PTO switch might be bad, in which case you'll need to replace the switch.