Originally Posted by Pleiades

The fan will only ever come on (in UK weather anyway) when stop-start riding in heavy traffic (or riding off-road slowly) in higher ambient temperatures. During April in Lancashire I'd be amazed if was ever needed, unless you were any a traffic jam for a long time! So what you describe is perfectly normal.



The fuse in question is NOT the fan fuse; it is #5 the FUEL INJECTION system fuse (which explains why it won't start when it's failed!)

The most common and likely reason for this fuse to blow is a short (probably intermittent) caused by abrasion of the wiring to the injector on the top right hand frame rail under the tank.

Remove the tank and have a look at where the fuel injector wires spur off the main loom. It will be obvious if this is the issue. You will need to repair the wires, fit a foam pad to stop it wearing through again (photo) and refit the correct 10A fuse.



Have a look into this first and then post back.

If you need tank removal instructions, I've attached some below: