Certain items on any bicycle take time to bed in; to avoid damage, these need attention soon after you have bought the bike. The dealer that sold you your bike will be happy to perform this first important service without charge, however, it must be redeemed within three months of purchase. They will pay particular attention to the following items:
Spokes The tension of the spokes should be checked and adjustments made to suit. If a spoke becomes loose for any reason, neighbouring spokes will be carrying extra load and may fail.
Crank Axle Bolts & Pedals These must be checked for tightness. If these items work loose, the aluminium cranks will almost certainly become irretrievably damaged.
Cables Although the cables are pre-stretched, inevitably there is further initial stretch. As this affects hub-gear control, the gears should be checked for correct adjustment. It's well worth setting the brakes at the same time.