Have Boat Questions? Ask a Boat Repair Expert.
Hello, my name is***** will assist you.
The hex on the spark plugs is 5/8" or 16mm. Either socket will fit the spark plug. Most any store that sells hand tools will carry this spark plug socket.
You will need a long extension on the ratchet to gain access to the plugs. Or you could use T-handle tool like this one.
Did you need assistance on the plugs?
You may need a thin wall spark plug socket, but even the owners manual for the ski says just a regular spark plug socket will do.
Make sure that the entire coil boot came up with the coils, and there is not a rubber ring left on the plugs.