2009 Yamaha F40 Outboard Service Manual, Page 341Get this manual
Bracket unit 11Install new O-rings E, F, the filter G, the springs H, the absorber valve pins I, the balls J, new O-rings K, and the gear pump housing L, and then tighten the gear pump housing bolts to the specified torque
Main valve m: 11 Nm (1.1 kgfm, 8.2 ftlb) 7Install new O-rings and to the manual valve r8Install the manual valve seats s, the adapter t, the spring u, and the manual valve r, and then install the circlip v