O.S. Engines FS-40S-CX - Manual (Page 11)

GLOWPLUG
The role of the glowplug
Glowplug life
Particularly in the case of very high performance
engines, glowplugs must be regarded as
expendable items.
With a glowplug engine, ignition is initiated by
the application of a 1.5-volt power source. When
the battery is disconnected, the heat retained
within the combustion chamber remains
sufficient to keep the plug filament glowing,
thereby continuing to keep the engine running.
Ignition timing is 'automatic' : under reduced
load, allowing higher rpm, the plug becomes
hotter and, appropriately, fires the fuel/air charge
earlier; conversely, at reduced rpm, the plug
become cooler and ignition is retarded.
The FS-40S-C and FS-40S-CX are supplied with
an O.S. Type F glowplug, specially designed for
O.S. four-stroke engines.
◆
◆ Try to avoid spilling fuel over the starter unit
and its cord. Some fuels have a detrimental
effect on these parts.
The starter prevents the engine from being
rotated in the wrong direction. The unit will
be damaged if you attempt to force the
flywheel in the opposite direction (i.e.
clockwise when viewed from the crankshaft
end).
NOTE:
Because, in the interests of personal safety,
dismantling of the starter mechanism is
strongly discouraged, the Recoil Starter is
available for replacement only as a pre-
assembled unit. However, some related parts,
such as Starting Shaft and Rear Adaptor, are
obtainable separately. (See Parts List.)
This will help prevent the cord from being
damaged by abrasion or engine heat.
◆
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