O.S. Engines FS-26S-C II - Manual (Page 10)

18
Fuel
Air Cleaner
Warning!
Do not touch rotating parts, engine and si-
lencer when stopping the engine as they
become very hot, and contact with them
may result in a serious burn.
To stop the engine, close the throttle to
idling speed, then shut it off completely with
the trim lever on the transmitter. To cut off
the fuel supply, pinch the fuel delivery tube
to the carburetor. VALVE ADJUSTING
Valve clearances are correctly set before any
O.S. engine leaves the factory and, in normal
use, will seldom require adjustment. However,
if, after a considerable amount of running time,
a loss of power is detected, or if he engine has
been disassembled for repair, these
clearances should be checked and reset as
necessary.
For checking and adjusting the valve
clearances, a VALVE ADJUSTING TOOL KIT
is available as an optional accessory.
Note:
Adjusting the carburetor with no load
condition means nothing but damage the
engine. Do not run the engine with no load.
In the event of any major working parts
(e.g. piston/cylinder liner assembly) being
replaced or the fuel changed, especially to
high nitro fuel, or silencer and gear ratio
and clutch timing changed, the complete
running-in should be repeated.
Gloves
19
CARE & MAINTENANCE
At the end of each operating session, drain
the fuel tank, then energize the glowplug and
try to re-start the engine to burn off any fuel
that may remain inside. Repeat this
procedure until the engine fails to fire. Then
remove the glowplug and drain off any
residue while the engine is still warm.
Inject some corrosion-inhibiting after-run oil
and rotate the crankshaft to distribute oil to
the working parts. Do not inject such oil into
the carburettor, however, as it may cause
deterioration of the carburettor's O-ring seals.
Apply a little lubricating oil to the rocker shaft
and rocker arms.
Note!
These maintenance procedures will reduce
the risks of corrosion or starting difficulties
after a period of storage.
When cleaning the exterior of the engine,
use methanol or kerosene. Do not use
gasoline or any solvent that might damage
the silicone fuel tubing.
PARTS REPLACEMENT
Over a long period, depending on how well
your engine has been protected from the
ingress of dust and grit and other causes of
wear and tear, loss of performance may
eventually occur in the form of reduced
power, reluctant starting, unstable idling, etc.
Having checked that this is not due merely to
the need to readjust the valve clearances (for
which an O.S. Valve Adjustment Kit - Code
No. 72200060 - is available) inspection may
then reveal that the replacement of some
parts may be called for.
Contact the O.S. distributor in your country
for parts or full service. See pages 25 & 26 of
this booklet for details of parts.