As my newly purchased MH has only done 13,500 miles I thought that there was no need to check with the previous owner whether the timing belt had been changed. I have just read in another post, however, that it is wise to change the belt every 5 years regardless of mileage. The MH is 2002, so 9 years old, so I'm a bit concerned. I'll contact the previous owner and ask if it's been changed, but would appreciate some expert advice - is it true that it should be changed periodically regardless of mileage? If so, is 5 years reasonable?