Yamaha 115-225 HP Outboards Service Manual, Page 187Get this manual

Yamaha 115-225 HP Outboards Service Manual, Page 187

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po_W_E_R_T_R_IM_A_N_D_T_IL_T_U_N_IT 3) Install the up-relief valve with new O-ring, and tighten the locking-bolt to the specified torqueFilter O-ring Up-relief valve complete

Down relief-