There are different methods, depends on the EFI. What is your engine serial number.
Well, I searched through the manual again and found this:
1. In a 6 gallon remote tank mix the following
a. 5 gallons 87 octane
b. 2 gallons 2 cycle outboard gas
c. 5 ounces fuel stabilizer
2. Allow engine to cool
3. Active the Schrader valve to relieve fuel system pressure
4. Close the fuel shut-off valve
5. Connect the remote tank (with the mixture) to the fuel system
6. Start the engine and operate at 1500 RPM for 5 minutes
Well, I searched through the manual again and found this:
1. In a 6 gallon remote tank mix the following
a. 5 gallons 87 octane
b. 2 gallons 2 cycle outboard gas
c. 5 ounces fuel stabilizer
There's something wrong with the math here. 5+2+1/3 stabilizer= 1 &1/3 gallons more than a 6 gallon container can hold.
Chuck