fuel/oil ratio Mercury Outboard

[SS180Starcraft]

I have a 90 HP 1985 or an 84, i hope it doesn't make a difference, Mercury outboard. I can't find what the fuel/oil ratio is for this motor. Its a 6 cylinder 2 cycle can anyone help. Also what time of cranking amps do i need to make sure the battery is for this motor? Thanks for all who have been giving me input. I am finally starting to work on my boat!!

 

[Bubbles Up]

Re: fuel/oil ratio Mercury Outboard

I am thinkin 50:1 like most other Mercs.