FUEL SYSTEM
AIR CLEANERS
The elements of both air cleaners must be renewed kvery 12,000 miles (20000 km.)
Fig.
7
or 12 months; more frequent changes may be necessary in dusty operating
conditions.
Renewing
To renew an element, unscrew the bolts (1) securing the air cleaner assembly to
the carburetter and lift it from the car. Remove the base plate (2) and withdraw
the element. (3) Clean the inside of the casing
(4)
thoroughly and reassemble
using
a
new element.
CARBURETTERS-Type HS4
Lubrication
Each damper reservoir must be topped up periodically with a recommended
Fig.
2
engine oil.
Under
no
circumstances should heavy-bodied lubricant
be
used.
Unscrew the damper cap, withdraw the damper, and top up the reservoir until
the oil level (arrowed) is
f
in. (12
mm.)
above the top of the hollow piston rod.
Push the damper assembly back into position and screw the cap firmly into the
reservoir.
Accelerator
Lubricate the carburetter accelerator and choke linkages and cables, and the
accelerator pedal fulcrum.
Carburetter
The efficient operation of theengine and any exhaust emission control equipment
tuning
which may be fitted depends on correct carburetter settings, ignition timing,
Fig,
3
and
4
valve rocker. clearance, distributor contact breaker and plug gaps. It is essential
that these items are ckaked before adjusting the carburetters.
Carburetter tuning must
be
confined to setting the idle and fast idle speeds
and
mixture at idle speed.
A
reliable tachometer and a carburetter intake balancing
meter should be used if possible.
1.
Remove the air cleaners.
2. Top up the carburetter piston dampers if necessaiy with a recommended
engine oil to the correct level.
3. Check that the throttle functions correctly.
4.
Ensure that the mixture control (choke) will return fully, that the cable has
in. (2 mm.) free play
(1)
before it starts to pull on the lever and a small
clearance exists between the fast idle screws (2) and the cams.
. .
Fig.
2
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