2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 195Get this manual
Fuel System: 4) Connect special tools (pressure gauge, pressure hose and pressure joint) between fuel feed hose (1) and fuel delivery pipe upper union as shown in figureTighten the delivery pipe upper plug (3) to specified torqueClamp the hose securely to ensure that no leaks occur during checkingCAUTION small amount of fuel may be released when the fuel feed hose is disconnectedPlace container under the fuel feed hose or fuel delivery pipe upper union with shop cloth so that the released fuel is caught in the container or absorbed by the clothPlace the fuel soaked cloth in an approved containerSpecial tool (A): 0991258442 (Fuel pressure gauge) (B): 0991258432 (Fuel pressure hose) (C): 0991258490 (3-way jointhose) Tightening torque Delivery pipe upper plug (a): 35 Nm (3.5 kgf-m, 25.5 lbf-ft)
5) Ensure the emergency stop switch lock plate is in placeShift into "Neutral" position6) Squeeze fuel primer bulb until you feel resistance7) Turn ignition switch "ON" for seconds (to operate the fuel pump), then turn it "OFF"8) Repeat this ("ON" and "OFF") procedure or times to pressurize the fuel system and then check the fuel pressure