Re: 70 hp mercury need to find year and manuil to wire motor an boat ?
Typically the serial number is on the transom bracket, below the powerhead on the right side, when looking from rear (prop) side.<br /><br />Depending on the motor's age, it may be in the top of the transom bracket near the front of the cowling. You'd likely have seen that one.<br /><br />Failing that, check for a serial number stamped into a welch plug (size of a 25¢ coin) on the side of the block. Serial numbers are 6 or 7 digits and a prefix letter in most instances.