ELECTRICAL SYSTEM
A 12 volt earth return (or one wire) lighting and starting set is fitted.
As the frame parts are not insulated, one cable should be disconnected
from the battery terminal before removing any electrical unit, other-
wise there is a risk of a serious
"
short."
A list of the makers' numbers and descriptions of all electrical equipment,
including bulbs, will be found on page 40.
IGNITION
See page 8 for the function of the red warning lamp bulb. The failure of
this bulb will not affect the ignition, but it should be replaced at the
earliest opportunity.
Misfiring, etc.
If misfiring occurs, check that the fault is not due to
a
defect in the
carburettor, fuel supply, sparking plugs, etc.
The engine will run erratically in the rare occurrence of a wire having
broken inside its insulated casing. The trouble is then
dif5cult to trace.
Examine the high tension leads. If they are cracked and perished,
replace with the correct ignition cable which should be obtained only
from your local dealer and should be of the correct length.
Cleaning and Adjustment of Distributor Contacts
Every 5,000 miles (8,000 km.) wipe the inside and outside of the moulded
distributor cover with a soft dry cloth, paying particular attention to the
space between the terminals. See that the small carbon brush on the
inside of the moulding works freely on its holder.
Examine the contact breaker. The contacts must be free from grease
or oil. If they are burned or blackened, clean them with a fine
carbor-
undum stone or with very fine emery cloth. Afterwards wipe away any
trace of dirt or metal dust with a cloth moistened in petrol.
After cleaning, check the contact breaker gap. To do this, turn the
crankshaft with the starting handle until the contacts are fully opened
and insert a 0.015" (0.4 mm.) gauge between the contacts. If the setting is
correct the gauge will be a sliding fit, but if the gap varies appreciably from
the gauge the setting should be adjusted. Slacken the two screws securing
the plate carrying the fixed contact and move the plate until the gap is set
to the thickness of the gauge, tighten the two screws and re-check the
setting.
THE
BATTERY
(see page 1 1).
Keep the terminals clean and well covered with petroleum jelly. If they are
corroded, scrape them clean, assemble and cover with petroleum jelly. Wipe
away all dirt and moisture from the top of the battery, and make sure that
the connections are clean.
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