Well BLUE, your YAMAHA uses the old style OMC carbs(the ones they copied off of OMC back when they first started building them). They do have adjustable idle circuits in them, but the mid and high's are fixed. There are 6 bowl drains you can pull out, and I would reccomend you do this before you take it to somebody. You can look up diagrams and parts here.
http://www.yamaha-motor.com/outboard/parts/home.aspx
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2011 SUNDANCE B20CCR SKIFF, 2011 YAMAHA 90HP 4 STROKE, 2011 KARAVAN SINGLE AXLE ALUMINUM TRAILER, LOWRANCE ELITE-7 HDI, MINN KOTA RIPTIDE TROLLING MOTOR
2000CC HYDRA-SPORT 225+HP EVINRUDE SOLD
AND THE PINK JEEP!!!! R.I.P.
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