2003 Yamaha Motorsports Kodiak 400 Automatic Owners Manual - Page 142
2003 Yamaha Motorsports Kodiak 400 Automatic Manual
Page 142 highlights
EBU01258 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 panel D. (See pages 8-6-8-7 for removal and installation procedures.) 3. 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 8-33 1. Throttle stop screw 4. Install the panel. EBU00303 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.