Recent content by Dr.Foo22

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    Ryobi RM480E 38" riding mower won't move!

    Update: New speed transducer installed and we have some progress. Now when I push the accelerator pedal, the mower moves about 50% of the time. Not great. Going to pull the part and test it. Maybe I got a bad one? Then I'll pull the drive controller.
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    Ryobi RM480E 38" riding mower won't move!

    Update: The repair manual from Dingo-J is top notch! I followed the troubleshooting guide listed in there and tested these parts in order: the drive selector switch, brake sensor, and the speed switch/transducer. Looks like the speed transducer failed. Just ordered a replacement. I hope that...
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    Ryobi RM480E 38" riding mower won't move!

    Update: Took the batteries out, charged them individually on a noco genus 10, and got them tested at Autozone. Cold cranking amps measured on all 4 batteries: 320, 234, 202...and 30. Well, now I know why its not even turning on. Time to upgrade from the 75AH batteries to the 100ah!
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    Ryobi RM480E 38" riding mower won't move!

    Batteries die?! Every 2-4 years?! Oh my! What horrible news! If only it said that somewhere in the user manual. If only I could read. The electricity from my wall doesn't come from magic? Or hopes and dreams? Or unicorn farts?! What is coal? Thank you slomo. Thank you for coming to this thread...
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    Ryobi RM480E 38" riding mower won't move!

    Update: I pulled the batteries and charged them individually on a 10amp charger. Put it all back together, turn the key and the gauge lights up for a split second....then nothing. No gauge lights, headlights, or power to the USB. No blades. Turn the key off and on. Still nothing (not even the...
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    Ryobi RM480E 38" riding mower won't move!

    Joining the chorus: Mower blades spin, but the mower wont move. Its ~3.5 years old. From reading the above, I'm thinking its the drive motor controller or the speed switch controller. Does anyone have troubleshooting guides for those two parts? Would like to put a multi-meter on them before I...
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