We did nothing with the clutch, we did fit however a 12hp motor onto the back, those quad bike wheels pretty much bolted on with a couple of small home made adapters.
I change my oil on all my machines between 15-20 hrs.
Apart from that, I wash mine to make it stay pretty, clean the air filter and re oil, a plug every now and then. Main issue is if she burns oil dont let it run out!
