Himoinsa
Engine-Alternator Misalignment / Mounting Fault
Generator vibrates excessively during operation, causing the canopy and frame 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 engine mounts, Loose alternator mounting bolts, Unbalanced fan or coupling, Bent crankshaft or rotor
How to Fix / Troubleshooting
Safety: Do not place hands on vibrating components while running. Shut down and isolate the generator before inspection.
- Inspect mounts: Check rubber engine and alternator mounts for cracking, separation, or collapse. Replace any damaged mounts.
- Check mounting bolts: Tighten engine skid and alternator foot bolts to the torque specified by Himoinsa.
- Visual alignment: Inspect the coupling between engine and alternator (if accessible) for misalignment or damage.
- Professional balancing: If vibration persists, have a specialist perform dynamic balancing of the alternator rotor and check engine alignment.
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Repair Difficulty
Hard
4/5
Required Part
Engine Mount Set
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