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Susan MackSep 7, 2025
Why is the malfunction indicator light (MIL) on my Toro 74947 on?
- JJames AlvarezSep 7, 2025
If the malfunction indicator light (MIL) on your Toro Lawn Mower comes on, there could be several reasons. The engine might be too hot, in which case you should turn it off and let it cool. Old gas in the tank can also trigger the light, so try using new gas. Ensure the fuel-shutoff valve is completely open. A dirty air cleaner can cause this issue, so clean or replace it as needed. Also, check the battery charge and replace the battery if necessary. If the problem persists, it could be due to incorrect or dirty fuel filters, loose connections to the sensors, low battery voltage, or a blown fuse. For fuel filters or sensor issues, contact an Authorized Service Dealer. Ensure you are using a good 12-volt battery and replace any blown fuses.
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