I started a previous thread about my issue, but it has since died and I have some new info. 13 F3 675, will not crank if I let it finish the diagnostic mode, however if I push the starter button as soon as I turn the key on it will turn over for a couple of seconds and stop. I've done all the checks I can, installed a new lithium ion battery, replaced the sprag clutch. tested the starter swich, clutch switch, etc, I have been in direct contact with MV Augusta U.S.A. and was told it could be the diode, but I have been unable to locate it. Does anybody if this bike has a diode, and if so were it is located. This issue happened when I drained the battery trying to start the bike and hooked up my battery charger with reverse polarity.