Service Manual only has basic info, remove plug, short it to ground, pull cord and check if with healthy spark. Connect red kill cord. One thing that find on 2 strokes 5 HP- OB's is that the black wire that connects to Ignition Coil terminal comes bit wider than it should and connector is not plugged firm to IC, with a plier close a bit connector to achieve a tight fitting on contact.
Happy Boating