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ELECTRICAL SECTION.
94. ESSENTIAL MAINTENANCE.
Battery. Inspect the battery regularly and
keep acid level to the top of the separators
by adding distilled water.
UNLESS YOU DO THIS YOUR
BATTERY
WILL
QUICKLY
DE
TERIORATE.
Wiring. Keep all connections and terminals
tight. See that the cables are clear of moving
parts.
Dynamo.
Keep brushes and commutator
clean. (Para. 93.)
Magneto. Keep contact breaker clean. If
necessary polish the contacts with fine
carborundum stone or emery cloth and after
wards wipe with cloth moistened with petrol.
(Para. 88.) Occasionally check contact
breaker opening (using gauge on ignition
spanner). (Para. 87.)
Replace high-tension cable if it becomes
worn or perished.
Head Lamp. Focus head lamp after fitting
new bulb. (Para. 98.)
IGNITION.
95. LUBRICATION.
The cam is lubricated by a wick, con
tained in the contact breaker base, which
must be given a few drops of thin machine
oil about every 2,500 miles.
To get at the wick, remove the spring arm
carrying the moving contact and withdraw
the screw carrying the wick. (Fig. 21.)
When replacing the contact breaker com
ponents see that the small backing spring is
fitted immediately under the securing screw
and spring washer, and that the bent portion
faces outwards.
c o n t a c t s
c o n ta c t
BREAKER
SECURING
SCREW
SCREW CARRYING
LUBRICATION WICK
SCREW SECURING
CONTACT B R E A K S
SPRING
Fig. 21.
96. ADJUSTMENT.
"After dismantling the contact breaker in
order to lubricate, the contact setting should
be checked.
Turn the engine until the contacts are fully
opened and insert the gauge provided, .010
inch—.012 inch thickness,
contacts.
between . the
The gauge should be a sliding fit.
If there is an appreciable variation from
the gauge, slacken the lock nut and turn the
contact screw by its hexagon head until the
gap is set to the gauge.
Tighten the lock nut.
97. CONTACT BREAKER—CLEANING.
Remove the contact breaker cover and
examine the contacts.
If they are dirty, they must be cleaned by
polishing with a very fine carborundum stone
or very fine emeiy cloth; afterwards wipe
away any dirt or metal dust with a petrol-
moistened cloth.
Cleaning of the contacts is made easier if
the spring arm carrying the moving contact
is removed as described in paragraph 86.
Examine the spring arm of the contact
breaker and wipe away any rust.
Adjust as described in paragraph 87.
98. H.T. CABLE.
Should be 7 m/m. in diameter, rubber
covered ignition cable.
The cable must be replaced if the rubber
insulation has perished or shows cracks and
becomes brittle.
To fit the new cable to the pick-up
terminal, thread the knurled moulded nut
over the lead, bare the cable for about J inch,
thread the wire through the metal washer
87