Setting - adjusting an internal rotor ignition with the Easyboost dial indicator

Start by removing the spark plug and installing the Easyboost comparator adaptor in its place.

Tighten the adapter firmly using a spark plug spanner or a ratchet fitted with a 21 socket.

Gently slide the dial indicator into the adapter.

Tighten the set screw to hold the dial indicator securely in place.

Rotate the crankshaft until the needle on the dial indicator changes direction. This indicates that you have reached TDC.

Turn the dial gauge until the "0" is aligned with the needle.

The ignition manufacturer recommends a timing of 3.20 mm before TDC. To do this, turn the crankshaft in the opposite direction of rotation to obtain ignition timing advance. For example, for the AM6 engine, turn the crankshaft clockwise from the ignition side. Each revolution corresponds to 1 mm of advance, and each graduation is equivalent to 0.01 mm of advance. You will therefore need to make 3 turns and 20 graduations with the needle.

Once you have positioned the piston 3.20 mm before top dead centre, place the ignition rotor, aligning its mark with that on the stator.

To tighten the crankshaft nut firmly, use the Easyboost rotor lock spanner.

After tightening the crankshaft nut, check the timing by repeating the same steps above.

If the two marks are not perfectly aligned, loosen the three screws on the stator to rotate it and fine-tune the setting.

Adjustment is complete when the two marks (on the stator and rotor) coincide perfectly.