Yamaha RS90RK Service Manual
Also see for RS90K: Owner's manualService manual
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Contents
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A.C. MAGNETO ROTORAND STARTER CLUTCH............................... 5-37REMOVAL ................................................ 5-38INSPECTION ............................................ 5-39INSTALLATION ........................................ 5-40OIL PAN AND OIL PUMP .............................. 5-42REMOVAL ................................................ 5-45INSPECTION ............................................ 5-45INSTALLATION ........................................ 5-47CRANKCASE ................................................. 5-49CRANKCASE............................................ 5-49CONNECTING RODS AND PISTONS ..... 5-51CRANKSHAFTAND BALANCER SHAFT ......................... 5-52REMOVAL ................................................ 5-54INSPECTION ............................................ 5-56INSTALLATION ........................................ 5-67CHAPTER 6.COOLING SYSTEMHEAT EXCHANGER ........................................ 6-1INSPECTION .............................................. 6-4INSTALLATION .......................................... 6-5THERMOSTAT ................................................. 6-6INSPECTION .............................................. 6-7INSTALLATION .......................................... 6-7WATER PUMP.................................................. 6-9REMOVAL ................................................ 6-11DISASSEMBLY......................................... 6-11INSPECTION ............................................ 6-12ASSEMBLY............................................... 6-12INSTALLATION ........................................ 6-13CHAPTER 7.CARBURETIONCARBURETORS AND FUEL PUMP................ 7-1INSPECTION .............................................. 7-6ASSEMBLY................................................. 7-8INSTALLATION .......................................... 7-9FUEL LEVEL ADJUSTMENT ................... 7-10THROTTLE POSITION SENSOR (T.P.S.)INSPECTION AND ADJUSTMENT .......... 7-11INSPECTION ............................................ 7-12INSTALLATION ........................................ 7-13CHAPTER 8.ELECTRICALSWITCH INSPECTION ..................................... 8-1SWITCH INSPECTION ............................... 8-1INSPECTING A SWITCH SHOWNIN THE MANUAL ........................................ 8-1IGNITION SYSTEM .......................................... 8-2CIRCUIT DIAGRAM.................................... 8-2TROUBLESHOOTING ................................ 8-3IGNITION SPARK GAP .............................. 8-5IGNITION COIL........................................... 8-5PICKUP COIL ............................................. 8-6THROTTLE OVERRIDE SYSTEM(T.O.R.S.).................................................... 8-7ENGINE STOP SWITCH ............................ 8-7THROTTLE SWITCH .................................. 8-8MAIN SWITCH ............................................ 8-8ELECTRICAL STARTING SYSTEM ................ 8-9CIRCUIT DIAGRAM.................................... 8-9TROUBLESHOOTING .............................. 8-10STARTER MOTOR ................................... 8-12CHARGING SYSTEM ..................................... 8-17CIRCUIT DIAGRAM.................................. 8-17TROUBLESHOOTING .............................. 8-18BATTERY.................................................. 8-19A.C. MAGNETO ........................................ 8-19LIGHTING SYSTEM ....................................... 8-20CIRCUIT DIAGRAM.................................. 8-20TROUBLESHOOTING .............................. 8-21BULB(S) .................................................... 8-23HEADLIGHT BEAM SWITCH ................... 8-23HEADLIGHT RELAY................................. 8-23LOAD CONTROL RELAY ......................... 8-24SIGNAL SYSTEM ........................................... 8-25CIRCUIT DIAGRAM.................................. 8-25TROUBLESHOOTING .............................. 8-26BRAKE LIGHT SWITCH ........................... 8-32GEAR POSITION SWITCH(RS90R/RSG90/RST90/RST90TF)........... 8-32DC BACK BUZZER(RS90R/RSG90/RST90/RST90TF)........... 8-32COOLANT TEMPERATURE SENSOR .... 8-33OIL LEVEL SWITCH ................................. 8-34FUEL SENDER ......................................... 8-34SPEED SENSOR...................................... 8-35 |
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