From this picture, can anybody tell me...

[johnm]

From this picture, can anybody tell me the size(diammeter) of these orifices. It's a 1980 55HP 2 stroke envinrude. I've got a 1979 but probably the same.<br /><br /> http://www.boaterssupply.com/images/fiche/big/2815521280.GIF <br /><br />1. No. 9<br />2. No. 35<br />3. No. 37<br /><br />Thanks.

 

[ob]

Re: From this picture, can anybody tell me...

John ,The orifice # refers to the opening dia.<br /><br />#9 intermediate orifice is either a .035 or .036<br />#35 is .055 on the upper carb and .056 on the lower<br />#37 idle orifice is either .045 or .048<br /><br />The optional sizes depends on your engine and what operates best with your particular application.If you were running well with the ones you presently use ,I would determine their size and replace with the same.The old ones should have the orifice # enscribed on it if it is legible.Good luck.

 

[johnm]

Re: From this picture, can anybody tell me...

There was God and then there was OB. Thanks for that. Is there anything you don't know?