Motorcycle Questions? Ask a Mechanic.
Thank you for your inquiry.
A professional technician works on hundreds of different units a year, many of which could very well be units such as yours. Without knowing the specifics of what problem or symptom you are experiencing, a technician has no way of knowing whether he has encountered and resolved that problem previously.
To be able to serve you better, please state the conditions, problem or symptoms you are experiencing. To avoid wasting your time in suggesting tests you have already tried, please state any tests or things that you have tried.
The fan control relay unit is probably faulty. It is under the front left fender.This relay controls your fan but it also shuts your engine down if the oil cooler fan doesn't work. Check if the fan can be powered on manually or try a new fan relay.A sticky clutch could be another suspect. Check valve clearances are not too tightand last resort is the CDI unit has problems.
Picture of fan relay:
CONTROL UNIT, COOLING FAN (TATEISHI)38710-HA7-671
If the clutch is okay I suspect a relay or CDI unit malfunction.
The CDI could work intemittantly as you have described.
Sometimes the CDI can have cold solder joints that makes
contact at various temperatures. Might work okay and then
suddenly stop when ignition is put under load as in starting out
in gear. Must be ignition related to cause a stall.
Fan relay may or may not be tied into the ignition at some point.
I am thinking maybe CDI is more likely a problem.