Electronic Ignition installation

Timing Wheel

Spark Plugs

Model Li GP J Series Luna
Timing in degrees (BTDC) 23 21 24 21 +/- 1

As above GP timing is 21 degrees which is equivalent to 28.5mm on the flywheel (from TDC) or 2.7mm of piston movement

LI/SX/TV timing is 23 degrees which is equates to 31mm on the flywheel (from TDC) or 2.27mm of piston movement.

For reference each degree of rotation is equal to 1.36mm on the magneto housing/flywheel perimeter.