2009 Yamaha F40 Outboard Service Manual, Page 31Get this manual
SPEC Fuel system
Specification Tightening torques Nm kgfm ftlb 0.5 3.7 0.3 2.2 0.5 3.7 1.5 0.15 1.11 0.2 1.5 0.3 2.2 0.5 3.7 0.4 3.0 3.5 0.35 2.58
Part to be tightened Fuel cup assembly Fuel pump screw Link rod locknut Vapor separator drain screw Float chamber plate screw Float chamber cover screw Pressure regulator bolt Nipple Fuel cooler screw
Screw size M5 M5 M5 M6 M6