BCS PART #334-07
INSTRUCTIONS FOR INSTALLING
YOUR ARD GOLD STAR CDI MAGNETO
Welcome to the new line of pre-unit magnetos which will
fit BSA, AJS and about all other base type mounting for British motorcycles.
Step1) Remove the old unit from engine case
by removing the four hex bolts. BSA uses a strap to hold the magneto down. We
can supply a strap if requested.
Step 2) Place your new ARD magneto in place with a new gasket and the 7/16 hex
nuts which are provided.
Step 3) Timing is done with the taper using your old drive which came with your
old engine. The taper hub should not be tightened until the red timing marks are
lined up together, and the engine crankshaft is in the correct firing position.
Step 4) Connect the wires from the black box to the secondary ignition coil, with the red wire going to the white wire and the black wire to the ground on the coil core.
Please call if you need any further information.
Note: The circuit which is wrapped in rubber can be zip-tied to any part of the
frame. The coil will have to be mounted.
Note: The yellow wire is ONLY for stopping the engine (by grounding it to the
frame with a kill button, which is not supplied in this kit). DO NOT connect
this yellow wire to any switch with a battery connection, as this will result in
damage to the CDI box!
Fine Timing can be done by loosening the two black screws. Turning left or right
using one degree adjustment marks on top of the magneto. Then retighten screws.
Timing should be set to same (fully advanced) timing specs as original ignition.
If unsure how to do this, please phone British Cycle Supply with your full
engine serial number and our tech help department will be happy to do their best
to assist.
These magnetos have built in electronic automatic advance. Due to this you must
NOT use an ATD (automatic timing device) gear or sprocket, unless it is locked
by welding or pinning, to fix the advance in position. BCS can offer fixed
advance gears as used on manual advance magnetos in most cases, if required.
Remember, magnetos are totally independent, self
generating ignition systems - NEVER hook a wire from a magneto to any part of
the rest of the wiring of a motorcycle. If installing an electronic tachometer,
contact BCS with details.