Reize
2 Wheeled Islander
Placing arbitrary numbers is pretty pointless IMO. Good practice but pointless.I've always been taught to do a clean and grease every 500kms or after some wet riding. Its usually 2 or 3 weeks riding for me, so she gets a wash after degreasing the chain, then gets a grease. All set for her next thrashing lol
Especially dirt heavy roads, wet climates can shorten the intervals required, but cleaner asphalt roads and dry climates can increase the intervals. Also depending on how heavy the chain is used and the type of bike, sometimes you just don't need that much maintenance.
My 153cc FZ16 was made to withstand the dirt roads of India, but i ride in the cleaner streets of Singapore. I scrub and lube the chain once every 3 months and it's still going strong.