How many weeks between starting 4 Stroke?

[Ryannnnnnnn]

Hey, 

Tried to find my answer on google but it was all 2 stroke related, or about winterizing your boat.

My 1 year old 150 4 stroke yammy hasn't been started in 4 weeks. How many weeks should you leave it until one needs to start their outboard up to use a bit of fuel? 

 

Cheers, 

 

Ryan

[ellicat]

Fuel starts to go 'stale' at 6 weeks I think. After that time you should use an additive to freshen it up or replace half the fuel. (Use the old fuel for your car).   Edit - Just looked it up and petrol has a shelf life of 3 months at 30 degrees in a sealed container.

4 weeks should be sweet though.

As an aside, I generally only fill up on the way out rather than on the way home so I'm always getting some fresh fuel in the tank on the day (or night before).

 

Interesting article -

https://www.bellperformance.com/blog/fuel-additive-for-old-gas

 

 

 

 

[Ed.]

I used to start up my boats every 3-4 weeks just to make sure the fuel doesn't gum up the fuel system, ie; injectors, pumps etc., as well charged up the batteries with a good charger after running the motor. Don't know if it did any good but certainly didn't do it any harm by doing it, so better safe than sorry.

Any old fuel went into the big ride on mower.

[Ryannnnnnnn]

Great thanks guys will give it a start every 3 to 4 weeks if I don't get to go out 

[benno573]

Just go fishing more? Solves all the problems!