First, you have to be more specific re your problem. Running out of gas isn't something I can fix. But did you switch to reserve?
I have similar '95SPX's. Starter and carbs are independent. But my main problem has been carbs and internal filters getting clogged by deteriorating fuel lines. Taking off carb requires a 6mm allen head hex socket after first taking off air intake components. I got into trouble with the carb bolts.. really locked up. So be very careful there to not strip out the hex bolts. 
First issue is starting.. "just clicks" frequently is a bad or discharged battery. Check solenoid by jumping across it in electric box. DO NOT jump start from a running vehicle or you may damage the expensive MPEM (Electrical Module).
Let us know what you find out.