O.S. Engines 61LX-H - Manual (Page 22)

CARE AND MAINTENANCE
O.S. 'Super-Filters' (large and small)are available, as
optional extras, to deal with this problem.
One of these filters, fitted to the outlet tube inside
your refueling container, will prevent the entry of
foreign material into the fuel tank. It is also
recommended that a good in-line filter be installed
between the tank and carburettor.
Finally, inject some after-run oil into the engine. Rotate
the engine a few times by hand, to make sure that it is
free, and then with an electric starter for 4 to 5 seconds
to distribute the oil to all the working parts.
These procedures will reduce the risk of starting
difficulties and of internal corrosion after a period of
storage.
Do not inject after-run oil into the carburetor as this may
cause the O-rings inside the carburettor to deteriorate.
Note:
Do not forget to clean the filters regularly to remove dirt
and lint that accumulate on the filter screens. Also, clean
the carburettor itself occasionally.
At the end of each operating session, drain out any fuel
that may remain in the fuel tank. Next, energize the
glowplug and try ot restart the engine to burn off any fuel
that may remain inside the engine.
Repeat this procedure until the engine fails to fire.
Remove the glowplug and eject any remaining fuel/oil
residue by rotating the engine with an electric starter for
4 to 5 seconds while the engine is still warm.
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