John Deere — Testing Park Brake Switch
Testing & diagnosis · Safety Interlock System
From a John Deere owner's manual — check it applies to your exact model before use.
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Before you start
- Perform these tests in a clear open area. Keep bystanders away
Procedure
- Park machine safely.
- Sit on seat.
- Unlock the park brake.
- Try to start engine. Result: Engine must not turn over.
Specs & values
- If engine turns over, there is a problem with your safety interlock circuit
Source: John Deere owner's manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.