400ex – won’t start

Help! I’m new to the forum and new to the hobby. My husband has ridden for years and is generally able to fix about anything. This one has him stumped.

I’ll try to keep this short. We bought a 2005 400ex with several aftermarket parts. Bored to 416. Rode about a week and noticed the starter clutch was going out. We ordered the part, and like an idiot we went ahead and took it on one more ride before changing the part.

We stalled out on the trail and when trying to re-start the oneway bearing flew apart and the starter burned up.

Towed home, opend it up and removed chunks of metal from crankcase. Replaced the starter clutch, stator, changed the oil, oil filter, and a new starter. Threw in a new sparkplug for good measure.

It won’t start. It cranks, and it popped one time… but was killing out the battery and we had to stop. We did try starter fluid before the battery gave up and nothing. This is also a new battery we put on before all this happend.

–PLEASE help. What else could be wrong?? Where do we go from here?