O.S. Engines 18CV-RX - Manual (Page 5)

8
ENGINE INSTALLATION
Make sure that the vehicle's engine mounting
surfaces are level and in the same plane. Poor
installation may cause distortion of the
crankcase, bearings, etc., resulting in erratic
running and loss of performance.
The recommended screws for securing the
engine are 3mm or 4-40 steel Allen hexagon
socket type.
If existing holes in the engine mount do not align
perfectly with engine mounting lugs, enlarge
them slightly with a needle-file so that screws
enter vertically.
Chassis
Chamfer inside edges of bearers.
INSTALLATION OF THE CARBURETOR
As delivered, the engine has its carburetor
lightly fit into the intake boss. Secure it as
follows.
Loosen the retainer screw, rotate the
carburetor to its correct position and make
sure that it is pressed well down into the
intake boss, compressing the rubber gasket,
before retightening screw.
Rotate the retainer screw gently until it
stops, then tighten a further 60-90˚.
Do not overtighten the screw as this will
damage the carburetor body.
1.
2.
Rotate the retainer nut
gently until it stops. Tighten a further 60-90˚
9
NOTE:
Where spacers are supplied joined in pairs
(see sketch) separate them as shown.
Either face may be placed downwards.
Avoid forcing the screws. Secure with locknuts.
If the bottom of the recoil starter housing would
otherwise touch the car chassis, fit the engine
mount spacers (supplied) between the
engine's mounting lugs and the engine mount.
Use the M3x15 screws provided. With some
vehicles, it may be necessary to make minor
trimming modifications to chassis or body
when fitting the engine.
Mount Spacer
Engine Mount Spacer
Separate
Engine Mount
AIR CLEANER TYPE 203
Element Base
Filter Element
End Plate
Retaining Screw
203 Intake Elbow
"O" Ring
NOTE:
The element is already impregnated with a special
filter oil. As this oil is very sticky, take care, when
handling it, to prevent dust or dirt from adhering to
the element. If your fingers become contaminated,
wash them with soap and water.
This is a heavy-duty wet type air cleaner that has
been developed specifically for 3.5cc 'off-road'
model car engines. It is more compact than the
former O.S. SUPER AIR CLEANER 202 and this
makes it easier to install within a car body.