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11.4.3. Cleaning the air filter
The purpose of the air filter is to clear the air that is sucked in for combustion, and to protect
against sand and dust particles. There are two important issues in this respect:
• The filter may not become damaged; a damaged filter could expose the engine to unfiltered air.
• The filter must allow sufficient air to pass through it, ensuring an optimum air-fuel ratio for
proper combustion. Regular inspection of the air filter is essential.
How to clean the filter:
• Release the black protective cover by loosening the screw on the top side.
• There are two types of filters. In addition to the common foam filter, there is also a paper filter.
• Loosen the attachment bolt at the top of the filter cartridge so that you can remove it.
Please note:
When removing the air filter, always make sure that no objects can
fall into the opening of the carburettor. As a precaution, cover it with a clean
piece of paper.
• Foam filters can be cleaned by rinsing them with some petrol and blowing them with compres-
sed air.
• Paper filters are cleaned by dusting them down or cleaning with compressed air.
Please note:
Keep the air pistol at a good distance from the filter to prevent the powerful jet of
air from perforating the cartridge filter.
• If the air filter is too dirty, it should be replaced. Contact the engine manufacturer's service
centre and order the original replacement air filter there.
Please note:
Always make sure that the filter cartridge fits nicely in its place. It is important
to make sure there is no gap through which unfiltered air can enter the engine. Dirty air in the
engine will result in irreversible engine damage!
• After cleaning, return all parts to their original positions.
Please note:
In the event the machine has toppled over for some reason, check
the air filter immediately. The tilted position of the engine may have caused oil
to seep from the crankcase via the carburettor onto the air filter. Oil on the filter
paper obstructs the air passage. Soiled filters must be replaced immediately.
For your information:
The above description is indicative, please also read the
engine manufacturer's manual on the subject.
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