How old is a Johnson 4Hp serial Norc8197955 model nocj4brocb?

To determine the age of a Johnson 4Hp model with the serial number Norc8197955, you would typically need to reference the manufacturer's production records or a specific year associated with that serial number. Johnson outboard motors were produced from the 1920s until the early 2000s, so knowing the specific model year would help pinpoint its age. If you have access to a Johnson outboard motor guide or database, you could find the exact year of manufacture based on that serial number.