Motorcycle and atv electronics troubleshooting and diagnosis can be divided into two catagories.The first section will cover alternating current commonly referred to as AC. AC produced from your motorcycle source coil is used to ignite compressed gasoline vapor in your motorcycle engine
The second section highlights AC current converted to DC current for use in accessories including lights , horn , battery , and turn signals.
When you take insulated copper wire and wrap it many times around an iron core and then rotate it inside a series of fixed magnets it will induce an electrical flow. This is where the name "magneto" comes from.
The electriciy produced will be AC " alternating current " and is carried by way of wires to a device designed to store it until a later time where the elecrical energy can be discharged. This device is commonly referred to as a CDI which stands for " capacitor discharge ignition ". The coil or coils of small insulated copper wire are sometimes called source coils and the complete assembly is called the " stator ".
Another series of coils on the stator consist of larger wire and are " lighting coils ".
One more coil to be noted at this time is referred to as a pickup or trigger coil. It's purpose is to tell the cdi when to discharge it's stored energy toward the final ignition member known as the ignition coil.This is the device where your plug wire attaches .
Your spark plug finishes the circuit path for the electricity to run to ground established by the plug screwing into the engine head.
When you experience your motorcycle not starting...begin with the simplest reason it might be not working.
Check your key switch or kill switch and make sure they are on. Next, make sure all electrical parts are still plugged in.
Many times the problem is something just came unplugged or you just have a bad ground.
Remove plug and replace with a new one. Hopefully you will now have spark !
If still no spark , check wires for a possible short or broken place. If you still have no spark, you will need a multimeter to check continuity in source coil. Continuity just means that there is a connection through an area of circuitry. If you have continuity , then proceed to trigger coil. If you have continuity , move on to CDI. And finally you will need to check your ignition coil. . Any combination of faulty parts will leave you with a condition of no spark. The accepted way to test for a bad part is to try replacing questionable part with a known good one.
Take note here : Once new electrical parts are installed they are non returnable!
Enquire for your OEM replacement parts at our online parts counter!

John Bentondirtbikes