Doesn’t start when? I don’t think it’s supposed to come on unless the bike reaches a certain temperature and possibly speed. I just put (this afternoon) the ThunderMax oil cooler fan on mine but couldn’t test anything because it rained here all day. I didn’t see a place to make any adjustments in the TMax application either so I assume it automatically comes on at pre-defined conditions.
Turn on the ignition and start button, BUT DON'T START THE BIKE. Roll throttle to full open and hold it. The fan will come on if it's operating correctly. Normal operation is activated off engine/oil temp.....Not 100% on what that temp is, so I'm not gonna guess.
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