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Read articles →A real-situation fix filmed at around ten hours of ownership after the fuel-water warning light triggered during mowing. The owner locates the fuel filter, removes the wing-nut drain, pulls a small sample, and walks through the key-on priming steps per the manual. It's a brief, rough-camera walkthrough rather than a polished how-to, but useful for XR4040 owners facing the same warning light for the first time.
Posted by the buffcleb channel, which appears to be an owner documenting a first-time maintenance issue on their own tractor, no channel description or other context is available.
According to the manual, it means there is water in the bottom of the fuel system.
It is behind the cowling near the front of the tractor; lifting the bucket gives the best view of the silver canister filter.
Open the wing nut on the bottom of the fuel filter canister and drain a small amount into a cup to check for water or particulate.
Turn the key on and pump it to prime the system, then watch to see if the warning light comes back on.
