jetting help

I need help! I have a 200 yamaha blaster bored over 70. I need to know what gas ratio i need to mix my gas at! PLEASE HELP!!!
 
How does this look only has a little black at the tip
 

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hey just wondering how you made out with your jetting i have pretty much the same set up except my lid is still on and has 8 1 inch holes with uni filters in them
 
Hey, is it possible to rig up a blaster with an eletric start? Maybe rig up a battery? Tell me your oppinion. Also is it even possible?