ASK THE MXPERTS: MY 2016 KTM 350SXF WON’T RUN?
My 2016 KTM 350SXF quit running while I was at the track. I tried to change the fuse with the spare one that is in the main relay box, but it blew also. It turns out that my capacitor went out. I don’t know what a capacitor is or how to fix it. Help.
For some reason for the 2016 model, KTM changed from its old capacitor to a smaller one. The new capacitor had the bad habit of failing. This should be a no-sweat deal. It is easy to upgrade to the large condenser that comes on the 2017–’18 models (or even the previous 2015 one). The KTM part number is 777-110-3500. You should be able to sweet talk your local KTM dealer into getting this part for you under warranty. It is a known problem. Capacitors (also known as condensers) work like a tiny rechargeable battery with low capacity. A capacitor discharges its electricity in a split second and recharges just as quickly. The most common use for a capacitor on a fuel-injected motocross bike is to give a jolt of power to start the engine. When a rider strokes the kickstarter on an EFI bike, he is essentially building the electrical charge in the capacitor. When not being used to provide a jolt of electricity, the capacitor absorbs electrical spikes to keep the voltage at a constant level.