FZ6 won't start

[Grahamm]

Electrics on bikes are often linked in ways not detailed in the manual and error codes are notorious, reading them isn't always straight forward.

Yep, that's why I wanted to check the battery :thumbup

It's also possible you've got a intermittent crank sensor and/or connection, could be pickup rota, wet/corroded ECU connector or blown ECU, the later two are unlikely as you can bump start.   

I did do the 4 degree ignition advancer mod just a few days ago, however it started and ran ok with that.

I took the Timing Rotor cover off again when I had this problem, but there's nothing loose or damaged in there.

I've even tried turning the engine with the Timing Rotor bolt a couple of turns clockwise (NOT anti-clockwise!!) to see if it was the sensor on the crankshaft itself, but that didn't seem to be the issue.

I've also checked the resistance of the Crankshaft Position Sensor (which was in spec) and taken off the ECU connector and checked for continuity on the CPS wires which are ok and sprayed some WD40 contact cleaner into the ECU plug and connectors.

All of this seemed fine and I could bump start it after.

I'm going to try shorting the starter terminals and see what happens.

I've also seen a video which suggests that giving the starter motor a couple of (light!) taps with a hammer might help jolt something loose!