Coil ignition Timing
continue gently to rotate the wheel until the ptston reaches the top of the stroke
(this is known as TOP DEAD CENTRE"-T.D.C.). The correct piston position
can be felt with the timing stick by rocking the rear wheel to and fro. When
the true T.D.C. has been found, the
1954
Model 6T should be timed with the piston
in
this position, whereas for the Model ST and 1955 6T, mark the lowest part of the
timing stick which is visible at eye level and remove the stick; make a further mark
&"
(0.80 mm.) above the first mark. Now re-insert the timing stick into the cylinder
and rotate the rear wheel backwards until the piston has fallen about
$"
(6
mm.)
then reverse the rotation and slowly bring the piston up to the desired mark on the
timing stick. This procedure ellminates any error due to backlash in the timing gears.
Correct Positioning
of
the Distributor. Stand over the right hand side of the
machine and place the left hand under the distributor, holding
it
in such a manner
that
it
can be freely turned to the left or right. Now lean across the saddle
or
twinseat and rotate the distributor housing slightly (contact breaker points nearly
vertical) until the points just visibly open. Retaining the distributor in position
tighten up the clamp bolt and make a further check.
Check the
Timing.
Check the setting by placing a
0.0015''
(.W
mm.) feeler gauge
(or if not available a cigarette paper
or
tissue paper) between the points. Rotate
the rotor arm against the springs on the fuily advanced position when the feeler
gauge should just be released. Finally check that the lever clamp
bolt
is
fully
tightened. A long screwdriver should be held against the slotted head of the
clamping bolt from the underside of the engine to prevent
it
from rotation when the
nut is being tightened.
Sparking Plug Leads. If the timing operation has been carried out correctly, join
the plug leads
as
fo1iows:-
The lead nearest
to
the engine the
L.H.
cylinder (Drive Side).
The opposite lead to the R.H. cylinder (Timing Side).
Distributor Protective Cover.
Fit the
P.V.C.
sheet over the distributor with
cut-away hole on the
L.H.
(drive side) of the engine.
Fit the H.T. leads from the
distributor cap into the cut-away.
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