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Clean the filter elements in warm water with soap or with a non-flammable cleaning agent. Then dry
them well.
CAUTION
Do not use petrol, a kerosene solution or any other easily flammable agent to clean the filter
elements.
Do not oil filter elements.
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Clean the inside of the air filter cover and the air filter holder with a damp cloth. Be careful not to
allow any dirt entering the air duct going to the carburetor.
•
Dip the air filter elements in clean engine oil and wring them out well by hand.
Install the air filter
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Put back both air filter elements in the air filter holder.
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Check whether the rubber sealing (Fig. 19/1) is seated properly in the groove of the air filter.
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Put back the air filter cover on the air filter holder and fasten it with the screw (Fig. 18/4).
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Put back the service panel on the pump and fasten it with the screw (Fig. 5/1).
8.4.7
Spark plug
Remove the spark plug
•
Remove the service cover (Fig. 20/1) from the pump.
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Remove the spark plug cap (Fig. 21/2) from the spark plug.
•
Remove the dirt present around the spark plug.
•
Remove the spark plug with the spark plug spanner (Fig. 21/1) supplied.
•
Inspect the spark plug visually: clean or replace.
Clean the spark plug
•
Remove any carbon deposit from the electrode using a wire brush.
•
Use a feeler gauge to check the distance between the electrodes (Fig. 22). It should be 0.6 to
0.7 mm. If necessary, adjust the electrode distance.
Replace the spark plug
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Replace the spark plug if:
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The porcelain insulation is damaged or torn;
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The electrodes are considerably burned in;
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At least once a year or earlier if there is a reason for it (a burned in or wet spark plug causes a
weak spark which hinders the ignition).
NOTICE
Use the correct spark plug type NGK CR5HSB.
Install the spark plug
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Turn the spark plug manually into the engine block.
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Use the spark plug spanner to fasten the spark plug.
NOTICE
After being screwed in by hand with a spark plug spanner, a new spark plug should be
turned another 180° to push in the sealing (Fig. 22/1).
A used spark plug should be turned another 45° to 90°.
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916.000.116_004
DPU 31 PC
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