Fig. 14
Fig. 15
20
• Hand- tighten spark the plug using the supplied
spark plug socket.
• Slide a short, suitable tommy bar through the hole
in the end of the spark plug socket.
• Position the tommy bar so that equal amounts
protrude through either side of the spark plug socket.
• Finally make the gas tight seal by turning the spark plug
socket between ¼ to ½ of a turn. This final fractional
turn will crush the spark plug washer and make a gas
tight seal. Do not overtighten the spark plug.
• Reattach the HT lead to top of the spark plug.
3. Air Filter
WARNING: Never run the engine without the air
filter element fitted.
After approximately 50 hours of use the condition of
the air filter should be checked.
Note: The air filter may require more frequent attention
if the operating environment is especially dusty.
To remove:
• Ensure that the engine is switched 'OFF' and the
fuel tap is in the 'OFF' position. The engine should
be cold.
• Unscrew the wing nuts from the Air Filter housing
cover and remove it. (Fig. 14)
• Carefully store these parts for later re-installation.
• Remove the Air Filter Element from the housing
for inspection. (Fig. 15) If the paper element of the
air filter shows signs of severe discolouration and
clogging by dirt, dust etc it should be replaced.
To refit:
• Install the element into the Air Filter Housing.
A new element can fit either way round.
• Replace the Air Filter housing cover.
• Replace the wing nuts and ensure that the cover
is correctly seated and the wing nuts are securely
tightened.
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