52 plate fazer 1000

HI ALL, thought id pick your brains, i bought the fazer 1000 yesterday, nice bike, just one niggle so far, the clock wont keep its time i set it , works fine till i turn ignition off the it resets it self, is there some thing im not doing, to keep the memory? also hints on tyres an so on would be helpful, im not a speed freak those days are gone , i bought her for comfort and the occasional , weeeeeeeeeeeeeeeeeeeee all we need now is the weather and woooohoooo