Automobile Parts User Manual

Glowplug life

Particularly in the case of very high performance

engines,

glowplugs must be regarded as expendable

Install a plug suitable for the engine.

Use fuel containing a moderate percentage of

nitromethane unless more is essential for racing

events.

Do not run the engine too lean and do not leave the

battery connected while adjusting the needle.

However, plug life can be extended and engine

performance maintained by careful use, i.e.:

•

GLOWPLUG

The role of the glowplug

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.

Since the compatibility of glowplug and fuel may have

a marked effect on performance and reliability, it may

be worthwhile to choose the R/C type plug found

most suitable after tests.Recommended O.S. plugs

are A3, A5 and No8. Carefully fit plug finger-tight,

before final tightening with the correct size plug

wrench.

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

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.)

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