How to change Citroen saxo fan belt?

Support the engine, remove cam belt covers and top engine mount. Remove serpentine belt then crankshaft pulley to expose cambelt. Lock the engine flywheel, fuel pump sprocket and cam sprocket. Loosen tensioner and remove belt. Fit new belt, set tension, remove locking tools then rotate engine twice by hand to check the timing holes align. If good, refit everything. If not, reset timing and check again.