Originally Posted by jimmie65

1. Check your tires and brakes every day before riding.
2. Lube your chain weekly or every 100 miles - use a good lubricant, not WD40. Also make sure your handlebars and pedals are turning freely.
3. Wash your bike once a month (more often if you ride in mud, etc.). Clean the chain and relube. Check to make bolts, etc. are still tight. Lube all moving parts - brake pivot points, derailleurs, etc. Lube the cables.

My timeline is probably overkill, but I tend to forget and only get number 2 done 2 or 3 times a month, number 3 every couple of months.