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10.2
Air filter
The air filter should be cleaned regularly removing dust and dirt to avoid:
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Carburettor malfunction.
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Starting problems.
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Reduced engine power.
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Unnecessary wear to engine parts.
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Abnormal fuel consumption.
Cleaning the air filter:
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Dismantle the air filter cover and remove the air filter.
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Wash in clean, warm soapy water.
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Ensure that the filter is dry before refitting.
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An air filter used for a long period of time can never be cleaned completely. Therefore it
is necessary to replace the air filter from time to time with a new filter.
Attention! Do not ever use the unit without its air filter. The filter must be kept
clean. A damaged filter must be replaced with a new one.
10.3
Change/adjustment of the spark plug
Attention! Worn-out spark plugs or too large distance between breaker
contacts decrease the engine performance.
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Turn the unit off.
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Disconnect the sparkplug cable from the spark plug.
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Unscrew counterclockwise the spark plug with a spark plug key. Do not use any other
tool in order to prevent any damage.
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Use a control template (available at specialized shops) and check the distance between
the breaker contacts. The distance must be 0.635 mm.
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If necessary, correct the distance by carefully bending the ignition arch of the spark plug.
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Clean the spark plug with a wire brush.
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Insert a cleaned and adjusted spark plug or replace the damaged one by a new one.
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Reconnect the spark plug cable.
10.4
Carburettor adjustment
The carburettor was adjusted to optimum performance already during production. If the
carburettor requires readjustment, have it done at a specialized expert repair shop.
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