While riding sometimes bolts and screws get rattled loose. Therefor it is always important that they are checked regularly to prevent accidents.
- Check the stem to see if the bolts are tightened accordingly to the correct torque (if you don't know this amount, then check with your local bike supplier, or stem manufacturer). Make sure that the bolts also are evenly tightend.
- Check that the grips are secured and will not slip off. If you have got lock-on grips, the tighten the bolts on these if they are loose.
- Check your brake levers and gear-shifters. These should be tight enough so they don't move around, but not to tight so they don't get snapped off if the bike is involved in a crash.