How to get black parts on your motorcycle to look new

As much as it sounds bad, try spraying wd-40 in the start button with everything off, let it sit out in the sun for a few hours to let it soak in to the metal contacts under the switch and to dry out the wd-40. Then after say 4-5 hours, go out there and press the button a good few number of times say 100 pressing fast and hard a couple of times, that way if rust is on the contacts the wd should free some of the rust up and knock it loose off the contact.

Next time you go to wash bike put a plastic bag over the button to keep out the water and just wash around the area with a damp rag rather than soaking the whole area, should help to keep the button dry.

Worse case scenario is you can get a new/used button on ebay, replace and then start using a plastic bag to keep dry. those things are rough when the switches get wet on a bike.

Hope this helps.

You might have gotten the coil and plug wires too wet.

Either give it a day or two to dry out, or spray them with a thin coating of WD-40, wipe dry, and try starting.

Water is getting into your ignition coils.
Trace the spark plug lead up to the coil.
Get some ignition sealer spray and spray loads of it on the leads and coil.
When a bike is new, it is sealed. After washing with detergents it gets washed away. Spray the leads and coil once a week to keep them totally dry.
An immediate way to get round when wet is to spray wd40 on the leads and coil, it should start straight away.
But, don`t spray ignition sealer on until it is totally dry.
Hope this helps