Briggs & Stratton
Excessive Vibration
Generator vibrates excessively, causing enclosure or nearby structures to shake.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Damaged or collapsed engine mounting isolators, Unbalanced cooling fan or alternator rotor, Loose base frame anchors, Misaligned gas piping stressing the frame
How to Fix / Troubleshooting
Safety first: Turn controller to OFF and allow engine to stop completely before inspection.
- Check mounting isolators: Inspect rubber engine and alternator mounts for cracks or compression. Replace any collapsed isolators with Briggs & Stratton parts.
- Base anchoring: Ensure the generator base is securely anchored to the concrete pad per installation instructions.
- Fan and rotor balance: Look for missing fan blades or obvious damage to the alternator rotor. Replace damaged components.
- Gas piping: Verify that rigid gas piping is properly supported and not forcing the generator frame out of alignment.
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Repair Difficulty
Medium
3/5
Required Part
Engine Mount Isolator
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