Johnson carb main jet not sitting true

[Stuartb]

Johnson 60 hp 1986 model no:BJ60LCds s/no J7117614<br />three cylinder VRO<br /><br />As part of the winterising program I have removed carbs for cleaning. I should note that the motor worked great on my 16ft Waverider sportsboat this summer here in the UK, however the engineer in me (aircraft) means I have to check everything out.<br /><br />My problem is not major but I cannot believe it is correct that when looking into body of carb from float chamber direction the smaller diameter main jet tube is hard up against the side of the main jet tube, ie not concentric. The inner part is also hard up against the orifice in the venturi but on the other side,the jet appears to be loaded somehow.Hard to explain really,all three carbs are the same, can this be right? any advice please.

 

[Skyhigh]

Re: Johnson carb main jet not sitting true

On mine it’s the same way. I have the same motor as you.<br />Can you please e-mail me, I have a question I would like to ask you? chris357@bellsouth.net

 

[Joe Reeves]

Re: Johnson carb main jet not sitting true

Stuart/Sky..... And just what did you do with the service manuals (grin)?<br /><br />Seriously, that off center smaller brass line within the high speed venturi is the fuel feed for the idle passageways. It is designed to be off center exactly as you've described it. Do not attempt to change it unless you intend to purchase new carburetors at approximately $150.00+ ea.

 

[Stuartb]

Re: Johnson carb main jet not sitting true

Thanks Sky and Joe ,as a first time user of this board I am impressed! obviously this is just what I wanted to hear.BTW I have the Chymer manual for my engine but I can find no mention of this jet, perhaps its me.<br />Once again thanks<br />Separate e mail to Sky<br />Stuart