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<blockquote data-quote="ossagp" data-source="post: 209478" data-attributes="member: 1650">I have only seen one photo of the plug,&nbsp; and that one still looks way dark and rich for most of where it is living.&nbsp; the 172 would tell me that somewhere along the line that one was leaned out probably like most people do,&nbsp; to try to cure the sloppy float setting.you say it wont rev:&nbsp; OK,&nbsp; is it sputtering and trying to catch,&nbsp; or is it just going going on it's face like the tank went dry?&nbsp;&nbsp; Show a plug again please.In the mean time,&nbsp; run your tests with the choke knob screwed down snug,&nbsp; not just pushed down,&nbsp; and NO,&nbsp; it won't idle.On the float level,&nbsp; other models yamaha settings are using a fuel hose type meter to set the actual fuel level.&nbsp; that is done with the float bowl full and you take your measurement with the carburetor mounted and as i said full of fuel.&nbsp; what does your manual show?&nbsp; does it actually show the process?elaborate on air screw set at &quot;0&quot;.&nbsp; does that mean you have it turned all the way in,&nbsp; snug against it's seat?</blockquote>

[QUOTE="ossagp, post: 209478, member: 1650"] I have only seen one photo of the plug, and that one still looks way dark and rich for most of where it is living. the 172 would tell me that somewhere along the line that one was leaned out probably like most people do, to try to cure the sloppy float setting. you say it wont rev: OK, is it sputtering and trying to catch, or is it just going going on it's face like the tank went dry? Show a plug again please. In the mean time, run your tests with the choke knob screwed down snug, not just pushed down, and NO, it won't idle. On the float level, other models yamaha settings are using a fuel hose type meter to set the actual fuel level. that is done with the float bowl full and you take your measurement with the carburetor mounted and as i said full of fuel. what does your manual show? does it actually show the process? elaborate on air screw set at "0". does that mean you have it turned all the way in, snug against it's seat? [/QUOTE]

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