Yamaha F90D Service Manual

Also see for F90D: Ower's manual

Contents

6D81G11 i-1123456789IndexA.Adjusting the float .....................................4-17Adjusting the throttle link andthrottle cable .............................................3-8Adjusting the trim sensor ..........................7-21After test run ...............................................1-9Applicable model.........................................1-5Assembling the drive shaft........................6-20Assembling the forward gear ....................6-19Assembling the fuel pump...........................4-6Assembling the gear pump .......................7-33Assembling the lower case .......................6-19Assembling the oil pan..............................7-14Assembling the oil pump...........................7-12Assembling the power trim and tilt motor..7-29Assembling the power trim and tilt unit .....7-41Assembling the power unit........................5-49Assembling the propeller shaftassembly.................................................6-12Assembling the propeller shaft housing ....6-13Assembling the tilt cylinder .......................7-39Assembling the upper case.......................7-15Assembling the vapor separator ...............4-16B.Backlash ...................................................6-28Bleeding the power trim and tilt unit..........7-43Bleeding the power trim and tilt unit(built-in) ...................................................7-44Bottom cowling............................................7-3Bow view.....................................................8-5Bracket unit ..................................... 3-11, 9-13Break-in.......................................................1-9C.Canister.....................................................4-18Changing the engine oil by draining it.........3-4Changing the engine oil using an oilchanger .....................................................3-4Changing the gear oil................................3-12Charging system .......................................8-16Checking the anodes ................................3-14Checking the armature..............................8-15Checking the battery ......................... 1-7 , 3-14Checking the bearings ..............................6-18Checking the brushes ...............................8-16Checking the camshafts............................5-31Checking the canister ...............................4-19Checking the compression pressure...........5-3Checking the connecting rod big end sideclearance ................................................5-43Checking the cooling water passage ..........3-8Checking the cooling water pilot hole ......... 1-9Checking the cooling water temperaturesensor....................................................... 8-9Checking the crankpin oil clearance......... 5-43Checking the crankshaft ........................... 5-43Checking the crankshaft journal oilclearance ................................................ 5-46Checking the cylinder bore ....................... 5-41Checking the cylinder head ...................... 5-32Checking the diaphragm and valves .......... 4-6Checking the drive shaft ........................... 6-18Checking the drive shaft bushing ............. 7-13Checking the ECM...................................... 8-8Checking the electric fuel pump ............... 8-10Checking the electrical components........... 8-2Checking the engine idle speed ................. 3-8Checking the engine oil .............................. 3-4Checking the engine oil level...................... 1-6Checking the engine start switch andengine stop lanyard switch ....................... 1-8Checking the fuel filter ................................ 3-3Checking the fuel joint and fuel hoses(fuel joint-to-fuel injector) .......................... 3-3Checking the fuel pump.............................. 4-5Checking the fuel system ........................... 1-6Checking the fuse..................................... 7-45Checking the fuses ................................... 8-11Checking the gear oil level ................1-7 , 3-12Checking the gear pump .......................... 7-33Checking the gear shift and throttleoperation................................................... 1-8Checking the gear shift operation............. 3-10Checking the idle speed control ................. 4-9Checking the ignition coils .......................... 8-7Checking the ignition spark ........................ 8-7Checking the injectors .............................. 8-10Checking the lower case .......................... 6-18Checking the lower unit for air leakage .... 3-13Checking the magnet switch..................... 8-16Checking the main and fuel pump relay(fuel control)............................................ 8-11Checking the main and fuel pump relay(main control).......................................... 8-10Checking the oil pressure ........................... 5-3Checking the oil pressure switch ................ 8-9Checking the oil pump .............................. 7-12Checking the oil strainer ........................... 7-14Checking the outboard motor mountingheight........................................................ 1-7Checking the pinion and forward gear...... 6-18Checking the piston clearance ................. 5-41Checking the piston diameter ................... 5-40Checking the piston ring grooves ............. 5-42