2009 Yamaha F40 Outboard Service Manual, Page 174Get this manual
Fuel system Pressure regulator bolts p: Nm (0.5 kgfm, 3.7 ftlb) Nipple r: Nm (0.4 kgfm, 3.0 ftlb) Fuel cooler screw t: 3.5 Nm (0.35 kgfm, 2.58 ftlb) 10Install the fuel hose with the clamp and the fuel hose with the clamp x
6Install the filter holder j, new gasket k, and the cover assembly l, and then tighten the float chamber cover screws to the specified torque
Float chamber cover screw m: Nm (0.3 kgfm, 2.2 ftlb) 7Connect the lead n8Install the pressure regulator o, the pressure regulator bolts p, new O-rings q, and the nipples r, and then tighten the pressure regulator bolts and the nipple to the specified torque9Install the fuel cooler s, and then tighten the fuel cooler screws to the specified torque11Install the cooling water hose and the fuel hose z