Originally Posted by
lunaticfringe
yes. fan is shot. replace it.
fan is powered by a 2-lead harness. yellow wire is positive....black is ground. positive always active....ecm activates the ground on demand which spools up the fan. the plug to the fan is at rear of battery box area. large black rectangular plug. the ONLY plug in the vicinity with a yellow/black wire combo
factory part # is COOLING FAN Y0050.02A8A
very straight-forward and easy to replace but a bit time consuming....but relatively easy. in essence you lift bike, remove neg. battery cable from battery, remove upper shock mount attachment bolt, lower rear wheel several inches, remove fan attachment screws, unplug fan harness plug, rotate housing and pull rearward. from memory so probably missed a step or 2 but you get the idea. not difficult