O.S. Engines 21RG-X - Manual (Page 5)

8
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 touches the car
chassis, install 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
INSTALLATION OF THE CARBURETOR
As delivered, the engine has its carburetor lightly
fitted into its 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 90-120˚.
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 90-120˚
9
AIR CLEANER TYPE 201
This is a heavy-duty wet type air cleaner that has been developed specifically for 3.5cc 'off-road' model car
engines. It contains a specially impregnated filter element which more positively prevents highly damaging dust and
dirt from being drawn through the carburettor, yet allows engine performance to be maintained for longer periods
between element renewals. It is more compact than the standard O.S. HD Air Cleaner and this makes it easier to
install within a car body. This air cleaner is also supplied with a newly designed intake elbow that provides more
secure attachment to the caburetor.
Assembly Screw
End Plate
Filter Element
Center Screen
Element Base
Center Tube
Strap
Intake Elbow
Strap