6) Take off the Distributor (DB) Cap and mark the position of the Rotor, relative to its body, on a separate piece of paper, as a reference toward re-installation. This is important as the M800 DB rotor has a round helical drive gear at the bottom and as such can be put back in any position, other than correct, to enable a satisfactory restart.

7) Having thus marked the rotor position, take out the Distributor/DB from its housing and completely dismantle it, down to the Centrifugal Advance Mechanism (CAM). Wash thoroughly clean all parts/body in a bowl of Petrol with a 1” paint/hair brush and check the main shaft for any lateral play, arising out of wear and tear. If noticed, it will have to be set right either by a complete new distributor assy costing Rs:2k approx, or have it ‘rebushed’ at a competent Lathe shop, costing 1/10th of this. This check is important, as it determines whether the ‘Dwell’ will be ‘stable’ during operation at all Engine speeds.

8) Reassemble the DB mechanism in the reverse order, smearing the CAM weights etc with good quality ‘wheel bearing’ grease, as opposed to general-purpose chassis grease. Inspect the DB Points’ mounting plate also for total symmetry and free movement of its sub-plate, lubricating it lightly with sewing m/c oil. Also check out the DB Vacuum mechanism diaphragm for any leakages, by sucking at its opening tube and immediately holding against your tongue/lip for air-tightness. Very lightly smear the DB shaft with wheel bearing grease around the CB point heel contact area.

10) Carefully take out the four HT leads from the DB cap and inspect mating surfaces for any scale formations due to moisture ingress. If noticed, clean carefully with a brass wire brush, smear lightly with Vaseline and reinstall. Also wash the inside of the DB cap with Petrol/hair-brush to remove all accumulated carbon dust.

11) Same goes for the Ign Coil HT/LT Terminals.

12) Install the second new Condenser between ground (Coil mtg clamp) and the LT incomer from the Ign switch lead terminal (RHS of the Ballast resistor).
This not only considerably prolongs the point life/dwell stability but also assists in reducing radio interference in the Car’s music system.