O.S. Engines 21RZ-R (P) - Manual (Page 9)

AIR CLEANER TYPE 202
This is a heavy-duty wet type air cleaner that has been
developed specifically for the latest 3.5cc 'track-racing'
model car engines. It contains a specially impregnated filter
element which prevents highly damaging dust and dirt from
being drawn into the engine through the carburettor, yet
allows engine performance to be maintained for longer
periods between element renewals. The Type 202 air
cleaner has a special rubber body which facilitates easy but
secure fitting, with positive sealing at the carburetor air
intake. Its one-piece shock-absorbent body guaranties a
highly serviceable unit that also reduces the risk of damage to
the engine itself if the car overturns or is involved in a collision.
INSTALLATION OF AIR CLEANER
Carefully clean the carburettor,
removing any old adhesive or
sealant that may have been
previously used on the outside
of the air intake. •
Press the air cleaner body firmly
over the carburettor air intake. Make sure that the
outer rim of the air intake engages the internal
annular groove in the air cleaner: failure to do so
may result in the air cleaner falling off. •
Position the air cleaner correctly, so that it does not
foul the cylinder-head or obstruct the needle-valve.
FIT THE FILTER ELEMENT
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.
During storage, the oil may
have become unevenly
dispersed through the element.
This will be indicated if the blue
colour of the element material
appears patchy. In this case,
place the element in a small
plastic bag and gently rub it
between finger and thumb to
redistribute the oil.
It is advisable to replace the filter element with a new
one after not more than one hour of running time.
Always remove contaminated elements carefully, to
ensure that dirt cannot enter the carburettor.
REPLACEMENT OF ELEMENT
Insert beneath flange
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