1986 inline 6 cyl. 90hp Mercury

[GrenDle112]

just wondering because i just got this boat is this motor a 2 stroke or 4 stroke if 2 how would you mix the gas and in what ratio....the boat has an internal tank

 

[CharlieB]

Re: 1986 inline 6 cyl. 90hp Mercury

As a general rule all outboards run 50:1 using a MARINE TCW-2 oil

 

[GrenDle112]

Re: 1986 inline 6 cyl. 90hp Mercury

so you would say that this outboard id definately a 2 cycle and would i put the oil in the gas tank and then pump the gas in (has tank built into boat)

 

[Nickledimed]

Re: 1986 inline 6 cyl. 90hp Mercury

easy pacisi.
Go to walmart or any marine store and get an oil ratio measureing bottle, in the sporting goods/boat section.
take your boat to the gas station and filler her up with 87 octane preferably no ethenol.
When your done filling her up, notice how much gas you put in.
Now take your bottle, you will have 30:1, 40:1 50:1 and so forth.
using the 50:1 column fill the bottle up to the mark that equales the amount of gas you put in.
If you put in 6.3 i round up.
Also I recommend quick silver 2 cycle....not sure if Im out of bounds here.
If so, sorry.
hope this helps.
PS...yes it is a 2 cycle.