2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 11Get this manual
GEN INFO
General information NOTE: The optimum mounting height is affected by the combination of the boat and the outboard motorTo determine the optimum mounting height, test run the outboard motor at different heights2Check that the clamp brackets are secured with the clamp boltsS60C1140
Checking the gear oil level
1Check the gear oil level
Checking the remote control cables
1Set the remote control lever to the neutral position and fully close the throttle lever2Check that the stopper on the throttle cam contacts the fully closed stopper on the cylinder block
Checking the battery
1Check the capacity, electrolyte level, and specified gravity of the batteryRecommended battery capacity: CCASAE: 380 MCAABYC: 502 RCSAE: 124 Minute Electrolyte specified gravity: 1.280 at 20 (68 F) 2Check that the positive and negative battery leads are securely connected