David100 Posted June 4, 2009 Share Posted June 4, 2009 I have a 1978 Yamaha XS400 and need the setting for the float level and the pilot air screw (number of turns). I bought a Haynes manual but it does not list the correct setting on the 2E. Does anyone have this info? - David100 Link to comment Share on other sites More sharing options...
TylerP Posted June 5, 2009 Share Posted June 5, 2009 If the mixture screw is on the engine side of the slide it will adjust the fuel. If it is on the airbox side it controls air. I think your is on the engine side. 3 turns out from a lightly seated position is a good starting point. Link to comment Share on other sites More sharing options...
JimR Posted June 5, 2009 Share Posted June 5, 2009 I have a 1978 Yamaha XS400 and need the setting for the float level and the pilot air screw (number of turns). I bought a Haynes manual but it does not list the correct setting on the 2E. Does anyone have this info? - David100 Hi David, I would guess abot 1 & 3/4 turns out from home for the mixture screw, but this is subject to the bike running on idle smoothly (some xs400's needed the screw ½ turn out & others nearly 3 turns out to obtain that). With float height if the bike has not had the carbs 'played with' there is a good chance this will be correct, but I guess you have problems with the bike & it may be better to describe the faults rather than asking for specs as you may find that doing that will save you a bit of time as someone else has had the same fault in the past & has fixed it ! Regards Jim Link to comment Share on other sites More sharing options...
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