1978 Mariner 55 Carbys

[waz57]

Hi does anyone know the start settings for the air screws I thought it was hard up then back off 2 1/2 turns or is it 1 1/2 turns

 

[galamb]

Which "air screw" are you talking about?

This carb should have two fixed air "jets" (not adjustable) and an adjustable idle mixture screw (which is set to 1 1/8 turns out and then "left alone" - after which idle speed is adjusted via the throttle stop screw).

 

[waz57]

Thank you for the answer that's what I needed

Wazza

 

[waz57]

One last question, I use injector/carby clean in my bike and car can you use it in outboard motors ?

 

[typhoon]

Buy a manual

 

[waz57]

It doesn't say !!!!!!!!!!!!!!!!!!!!!!!!!!!!! whether you can use carby cleaner etc I thought it may upset the 2 stroke mix

 

[fastjeff]

You can use it, but it doesn't do much.

Jeff

 

[galamb]

I use three different products to clean carbs when I have them "torn down".

Depending on the carb body (some are plastic (Marelon), others contain plastic parts etc) so you can't always use "regular" carb cleaner.

So if I "know" I'm only dealing with metal parts then it's carb cleaner (like you would use on your bike, car etc).

If there are any plastic components I will use either Isopropal alcohol (in the form of gas line de-icer) or the spray can version of Ignition/Electronics cleaner (which is pretty much just alcohol propelled by propane) - neither of which will "eat" plastic or rubber.

Any of the 2 cycle rated "tune up's in a can" that you add to the gas are good as a "preventative" measure and when combined with a good stablizer can prevent a problem but do next to nothing once it's already occured...