RGV150 Servicing

[Scotty595]

Hey.

I had a bit of a play around with my bike yesterday - adjusting gear lever, brake, clutch etc. I had a few questions about some things.

I am wanting to replace the filter (or at least clean it) - Should i just get some motorbike foam air filter cleaner from supercheap?
Gearbox Oil - What is the best to use?
Spark plug - Does anyone know which plug it takes?
Chain and Sproket - Are these easy enough to do myself (as well as rear brake) and where is the best place to get them cheaply?

Is there anything i have missed/should check?

Thanks!

[Scotty595]

Have found out the spark plug - for anyone interested it is a BP8ES standard, BP8EVX for Platinum, and BPR8EIX for Iridium.

Really just need to know about the chain/sprocket now.

Thanks