* A feeler gauge
* A spark plug wrench
* A 10mm socket wrench
* A screwdriver
1. Remove the spark plug.
2. Insert the feeler gauge into the spark plug hole and measure the gap between the electrode and the ground wire. The gap should be between 0.018 and 0.020 inches.
3. If the gap is not within the correct range, use the screwdriver to adjust the electrode until it is.
4. Reinstall the spark plug.
5. Locate the timing inspection cover on the left side of the engine. It is a small, round cover with a single screw in the center.
6. Remove the screw and take off the cover.
7. You will see a rotor and a stator inside the cover. The rotor is the spinning part, and the stator is the stationary part.
8. There are two marks on the rotor, one marked "F" and one marked "T." The "F" mark stands for "firing," and the "T" mark stands for "top dead center."
9. The "T" mark should line up with the mark on the stator when the piston is at the top of its stroke.
10. If the marks are not aligned, you will need to adjust the timing.
11. To adjust the timing, loosen the two screws that hold the stator in place.
12. Turn the stator clockwise or counterclockwise until the "T" mark on the rotor lines up with the mark on the stator.
13. Tighten the two screws that hold the stator in place.
14. Replace the timing inspection cover.
Your 2001 Yamaha Blaster is now timed correctly.
