vk pro

Hello! I'm struggling with my 2007 VK pro.. I drove it until the ball bearing in the drive shaft was completely smashed to pieces, and with it burnt the speedo sensor. I let it stand out in the cold for a week and have finally now changed the ball bearing, but she wont start. The spark plugs...

The engine died after a day trip, luckily within a kilometer of reaching home, VK was towed the last km. I wasn't riding it at the time, my brother was riding along side a highway and the engine quit and wouldn't start. When the key was turned to start it, we could hear the starter motor but...