Need help with changing drive belt

[cbenner33]

I am a beginner with the lathe and recently purchased a Grizzly G1067z. I need to change the belt and need some advice (the instruction manual doesn't have any information on belt changing)...

After I purchased the lathe I was fooling around with the speed and the spring came off of the shaft. I am unable to compress the spring while putting the belt and the spring holder back on. Any advice?

Thanks