Born from an undeniable focus on race track-oriented performance, Yamaha's YZF-R6 is designed to withstand the extreme forces experienced during a race. While most of the R6's components can shrug these forces off with little effect, the headlight can be gradually vibrated out of alignment, making nighttime riding a difficult and dangerous affair. Readjusting the headlight's aim is a simple task that requires a single screwdriver, allowing you to spend more time riding and less time working.
Locate the adjusting screws on the back of the headlight housing, just in front of the handlebars. A pair of screws will be found on both sides of the headlight, one at the outer top corner and inner bottom corner of the headlight.
Select a large, bare wall and park the motorcycle 20 feet away from it, facing its headlight directly at the wall. Lift the motorcycle off its kick stand and into an upright position. Turn on the ignition and illuminate the high-beams to project the headlight beams onto the wall. Two distinct beams should appear on the wall; the low-beam should appear on the bottom with the high-beam above it.
Adjust the headlight's vertical adjustment using a Phillips screwdriver to turn the adjustment screw on the inner bottom corner of the headlight housing. Twist the screw clockwise to lower the beam, or counterclockwise to raise the beam. Adjust the headlight until the low-beam's projection on the wall is 4 feet from the ground. Repeat on the opposite side of the headlight.
Adjust the headlight's horizontal adjustment using a Phillips screwdriver to turn the adjustment screw on the outer top corner of the headlight. Twist the screw clockwise to move the beam to the right, or counterclockwise to move the beam to the left. Adjust the headlight until the low-beam's projection is centred on the wall.
Turn off the ignition and lower the motorcycle onto its kick stand.