mariner outboard tank size

[gary3029]

Anyone know what size (litres) the fuel tank is on a mariner 2.5 hp outboard? I cannot find it in the manual and I need the correct amount for fuel/oil ratio.
Thanks

 

[sofka]

the easiest thing to do is buy a fuel measuring bottle from machine mart. They measure out a litre of fuel and have bit on top which measures the correct oil ratio. ie 25% 35% 50% etc. It is perfectly adequate for a small o/b with an interagal tank. They are sold for 2 stroke mix for small garden machinery things like chainsaw and hedge cutters. Brilliant bit of kit.

 

[gary3029]

been on their site....Have a branch just around the corner so will pick one up in the morning....thanks Sofka

 

[ex-Gladys]

Surely you just buy 5 litres of unleaded in a fuel can and add 100 ml of oil to that? (Actually other way round, put the oil in first....)

 

[gary3029]

Yep could do that, but it is brand new so first tank is at 25:1 then after that 50:1. Mixing 5 litres at 25:1 would be too much. If I knew size of tank then for first mix could make up exactly what I want then revert to 5litre can method. Yes I could fill the tank then empty it, that would tell me how much it holds...messy though....just thought someone might know the tank size

 

[aitchw]

THIS site gives it as 1.4ltrs.

Any help?

 

[snowleopard]

Knowing the tank size only helps if you (a) always wait for it to run out before re-filling and (b) fill to the brim every time.

For those engines BTW, the ratio is stretched to 100:1 to meet emission regulations. At that ratio the engine is running on the edge and a little error can do big damage. Better to be a bit generous with the oil, perhaps going for 75:1

 

[ex-Gladys]

The Tohatsu is the same engine, and I ran mine in on 5l of 25:1 before going to 50:1. Consumption was given as 1.4 l per hour flat out , and running in was for 5 hours so I ran in for 5 l of fuel.... QED