chappo Posted January 25, 2023 Report Share Posted January 25, 2023 Hi everyone, I have a 2018 Beta Evo 4T. The bike has been unused for 8/9 months. I ran it today and found that the fan didn’t kick in. I tried to move the fan by hand but it was very stiff. I put some penetrating fluid in to try and release what I thought was a seized bearing. I managed to get it to moving but when the engine was run up to operating temperature the fan didn’t kick in. I checked and cleaned all the connection, all were fine. Can someone advise me, is there a way to check the fan independently or by bypassing the thermostat. I’m pretty sure the fan motor has gone but would like to check before committing to a new one. Thank you. Quote Link to comment Share on other sites More sharing options...
Glayne Posted January 25, 2023 Report Share Posted January 25, 2023 Just connect the fan straight to a 12v battery. 1 Quote Link to comment Share on other sites More sharing options...
chappo Posted January 25, 2023 Author Report Share Posted January 25, 2023 Thanks Glayne, does it matter which wires +/- from the battery I attached to the two wires from the fan. Quote Link to comment Share on other sites More sharing options...
mcman56 Posted January 25, 2023 Report Share Posted January 25, 2023 On my 2016, there is a connector under the fender near the air box that connects the electronic petcock and the fan. If you are doing anything in that area it is easy to disturb that connector. It can look connected but is not. I have to be very careful to push it together firmly. I have had the petcock and fan not work in the past due to this situation. Quote Link to comment Share on other sites More sharing options...
chappo Posted January 25, 2023 Author Report Share Posted January 25, 2023 7 minutes ago, mcman56 said: On my 2016, there is a connector under the fender near the air box that connects the electronic petcock and the fan. If you are doing anything in that area it is easy to disturb that connector. It can look connected but is not. I have to be very careful to push it together firmly. I have had the petcock and fan not work in the past due to this situation. Thanks. This is my fourth 4T and the first job I do is split all the connectors, clean them, reattach and secure them. Quite a poor design, they’re all loose and just flapping about 👍🏻 Quote Link to comment Share on other sites More sharing options...
Glayne Posted January 26, 2023 Report Share Posted January 26, 2023 21 hours ago, chappo said: Thanks Glayne, does it matter which wires +/- from the battery I attached to the two wires from the fan. I would try to investigate which one is grounded for -. Someone should correct me if I'm wrong, but I don't think there could be any damage from connecting reverse polarity, fan may just spin backwards? Quote Link to comment Share on other sites More sharing options...
trailmeisterjoe Posted January 27, 2023 Report Share Posted January 27, 2023 Just pull the 2 wires on the thermocoupler on the radiator and jumper the 2 together with a wire. Fan should run (with engine running). Joe Quote Link to comment Share on other sites More sharing options...
mcman56 Posted January 27, 2023 Report Share Posted January 27, 2023 On the 2016 there is a connector right in front of the rear wheel. The first time I took it apart I found green connector pins and I live in a mostly dry climate. Quote Link to comment Share on other sites More sharing options...
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