Yikes. I don't like the look of those pieces. You need to check 2 things. Look inside the stator cover, there is a boss there for the starter idler gear. See if it's cracked. That's not a big deal, you can just replace the cover.

Next pull the idler gear itself. It sits in a boss in the engine case. If that's cracked, your engine is toast. This piece:

 

I've seen this on YouTube where a guy tapped into his engine and placed the gear on a screw and fixed it up. if that's the case I'll be sure to write a good how to and take a ton of pics because I'm not gonna let this bike die out on me so easily

 

Post up a pic of what you find.

I've got 2 engines in my basement with broken idler gear bosses. There's just isn't an easy good permanent fix for this. Yes you can have it welded and re-machined, but to do it right is too much work and money.

The easiest and best (if you plan on keeping the bike and want it to be reliable) is to get a used motor (unfortunately). Last time I just went and found a used motor and had it swapped in and running a day later.

 

Well low and behold, that is exactly my problem. But I seriously don't plan on letting my starter bike go down like this so easily without so much as a fight! I'll post a How To once I repair this little issue!

 

Like I said, I've seen people try to repair this before with limited success. Short of stripping the case and rewelding the boss, which is a lot of work and some money to find a good welder.

But, I just saw this the other day and it gave me an idea. Hayabusa's have the same problem and they came up with a ring that goes around the start boss. Like below. So you might be able to epoxy the broken piece back into place. Careful not to get epoxy inside the boss. Then you could epoxy the ring around the outside of the boss if it's the same size or slightly larger. That should give it plenty of strength. You could probably make your own ring out of some thick wall steel tube. Or you can buy a ring from ebay if you can figure out if it will work.

GSX1300 Engine Case Saver 1999 2007 Protector Idler Gear Starter Suzuki Racing | eBay

 

man that would've been a good idea to try out from the beginning but unfortunately for me I've already started my idea:
I'm going to drill right through the engine (since there's really nothing on the other side except the starter (removable)) and tap it with a bolt that I'll modify to fit both the tap and the boss, image attached, and let that work as an axel within the boss.
I don't know if what I said makes any sense (my wife says only me and my bike understand me) but I'll be sure to write up a How To to better explain myself

 

That is a problem I faced on my f2. There is a solution that works. Drill and tap the hole. Run an appropriate size bolt in there. You'll have to shave down the bolt diameter to fit the sleeve. There's quite a few that have had success in doing this. I will be following it myself as soon as I get back to working on mine. Here's the link I got the idea from
'92 Honda CBR600 F2 broken starter-boss repair: http://youtu.be/qR_vFDHzvMI

 

Well I guess you learn something new every day. I've never seen that before. That looks like it would work as long as you get the hole drilled and tapped straight. Also probably need to seal the threads so they don't weep oil. May have to try that the next time.

 

yea this is the exact video I saw on YouTube that gave me the idea