Timing belt or chain on 2002 Nissan Quest

We have a used 2002 Quest with approx. 93000 miles on it, when is it time to replace timing belt or does it have a timing chain? And when should it have a tune up, new spark plugs, anything else?

Asked by for the 2002 Nissan Quest
IT has a timing belt. If you e-mail me I can email you a preventive maintenance plan.
2 more answers
The timing belt must be replaced at least every 105,000 miles, this is an interference engine serious internal engine damage occurs if the belt breaks.
You can also see your entire maintenance schedule on RepairPal: