1989 Honda FL400R Pilot Service Manual, Page 27Get this manual
CARBURETOR IDLE SPEED
If the engine must be running to do some ",ork, make sure the area is well ventilated.Vever ron tlw engine in an endosed areaThe exhaust contains poisonous carbon monoxide gas that can cause loss of consciouness and may lead to death
Inspect and adjust the idle speed after all other maintenance items have been performed and are within specifications
The engine must be warm for accurate idle speed inspection and adjustment Warm the engine up to the normal operating temperature, Connect tachometer to the engine and check the carburetor idle speedTurn the throttle stop screw using screwdriver to obtain the specified idle speed
IDLE SPEED: 1.300 150 rpm