26. Release the locknut R by means of the special spanner and turn Q so that the contacts are closed when the slipper L is over a flat of the cam, and open by the thickness of the, gauge spanner when slipper is on a point of the cam.
27. Are contact surfaces badly pitted?

Yes. This is unlikely to cause complete failure whilst running unless they are badly burned away. Sparking at the contacts to such an extent as to pit them badly is a sign of faulty connection to the condenser, or that the contacts are worn down to the base metal. Be sure that the screws holding the condenser in position are not slack.

Note. A fault in the condenser itself causing a short circuit would not cause sparking but would put the contact breaker electrically out of action.

N. To Renew Condenser.

28. The condenser cannot be inspected or repaired. If it is faulty the entire tray must be removed, the condenser taken off and replaced with a new one.

O. Replacing Distributor Arm and Cover.

29. When replacing distributor arm D, remember it can only fit properly into position when the flat on its underside registers with the flat on the spindle immediately above the cam M.
30. When replacing distributor cover be sure that the projecting dowel T on the casing registers properly with the niche O in the circumference of the cover. The springs U, which secure the cover, snap into place most easily when pressed in the middle.