1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 137Get this manual
FUEL DELIVERY SYSTEM
CARBURETOR FLOAT ADJUSTMENT Check float level by removing fuel bowl and checking level of float as shownIf necessary, adjust float level by bending float hinge
25.4mm (1 in
Measure From Bottom of Float
JET ORIFICE SIZEPART NUMBER CHART