AL10
FG Wilson Low Engine Oil Level Detection

Generator shuts down; controller shows AL10 – Low Oil Level (if separate level sensor fitted)

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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

Oil leak from sump or seals, Excessive oil consumption, Faulty oil level sensor in sump, Incorrect dipstick reading due to installation angle

How to Fix / Troubleshooting

Safety first: Ensure the generator is stopped and cannot start automatically. Allow a few minutes for oil to drain back to the sump before checking level.

  • Check oil level with dipstick: Remove, wipe, reinsert, and check. If below the minimum mark, top up with the specified oil grade. Do not exceed the maximum mark.
  • Inspect for leaks: Look around the sump plug, oil filter, rocker cover, and crankshaft seals for oil traces. Tighten or replace components as needed.
  • Check oil level sensor: If the dipstick shows correct level but alarm persists, locate the sump level sensor. Inspect wiring and connector. Remove the sensor (if accessible) and clean the float or probe.
  • Reset and test: Clear the alarm and start in MANUAL. If the alarm reappears with correct oil level, the sensor may need replacement.
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Repair Difficulty

Medium 3/5

Required Part

Oil Level Sensor
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