909 ES99 Manuale di istruzioni - Pagina 18

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909 ES99 Manuale di istruzioni
insulator is cracked or chipped.
3. Check that the end of the spark
plug is not blackened by carbon
build up. Clean with a soft wire
brush if necessary.
4. Measure the plug gap with
a feeler gauge. Correct as
necessary by bending the side
electrode. The gap should be
0.7 - 0.8mm.
Test the spark plug ignition
by disconnecting the spark
plug wire from the spark plug.
Hold the end of the spark plug
wire close to a metal surface.
If the spark plug is good, you
will see a spark or you'll hear
a crackling noise. This means that voltage is getting
through the wire to the spark plug.
Note:
This should only be carried out by a confident end
user as if not careful, this procedure may result in a non
lethal electric shock. Petrol fumes need to be considered
with an open spark and people with pace makers.
5. Thread the spark plug in by hand to prevent cross-threading.
6. Once the spark plug is seated, tighten with a spark plug
wrench to compress the washer.
Note.
When installing a new spark plug, tighten 1/2 turn
after the spark plug seats to compress the washer.
Note.
When reinstalling a used spark plug, tighten 1/8-1/4
turn after the spark plug seats to compress the washer.
CAUTION.
The spark plug must be securely tightened.
An improperly tightened spark plug can become very hot
and may damage the engine.

Transporting

CAUTION.
If the engine must be tipped to transport
equipment or to inspect or remove grass, keep the spark
plug upwards.
Transporting or tipping the engine spark plug down
may cause:
•
Smoking
•
Hard starting
•
Spark plug fouling
•
Oil saturation of the air filter
Ensure the storage area is free from excessive humidity
and dust.
Drain the fuel tank and carburettor.
WARNING.
Fuel is extremely flammable and explosive
under certain conditions. Do not smoke or allow flames or
sparks in the area.
Note.
Be aware to not hit or cut the fuel tank (9) while you
are transporting.
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