What is the proper spark plug gap for 1997 mercury HP outboard motor?

The proper spark plug gap for a 1997 Mercury HP outboard motor typically ranges from 0.030 to 0.040 inches (0.76 to 1.02 mm). However, it's essential to consult the owner's manual or service guide specific to your model for the exact specifications, as gaps can vary based on the engine configuration. Always ensure that the spark plugs are properly gapped before installation for optimal performance.