2006 Yamaha Motorsports Rhino 660 Auto. 4x4 Exploring Edition Owners Manual - Page 123
2006 Yamaha Motorsports Rhino 660 Auto. 4x4 Exploring Edition Manual
Page 123 highlights
EVU00810 Idle speed adjustment NOTE: A diagnostic tachometer must be used for this procedure. _ _ 1. Start the engine and warm it up for a few minutes at approximately 1,000 to 2,000 r/min. Occasionally rev the engine to 4,000 to 5,000 r/min. The engine is warm when it quickly responds to the throttle. 2. Remove the seats. (See page 4-20 for seat removal and installation procedures.) 3. Remove the console. (See page 8-8 for console removal and installation procedures.) 4. Connect the tachometer to the spark plug lead, and then set the idle to the specified idling speed by adjusting the throttle stop screw. Turn the screw in direction a to increase the engine speed, and in direction b to decrease the engine speed. Specified idle speed: 1,450-1,550 r/min 8-31 1. Throttle stop screw 5. Install the console. 6. Install the seats. EVU00820 Valve clearance adjustment The correct valve clearance changes with use, resulting in improper fuel/air supply or engine noise. To prevent this, the valve clearance must be adjusted regularly. This adjustment however, should be left to a professional Yamaha service technician.