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24 – English
MAINTENANCE
• Unnecessary wear to engine parts.
• Excessive fuel consumption.
Clean the filter every 25 hours, or more regularly if conditions are exceptionally dusty.
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it clean in warm, soapy water. Ensure that the filter is dry before
refitting it.
An air filter that has been in use for a long time cannot be cleaned completely. The filter must therefore be replaced with
a new one at regular intervals.
A damaged air filter must always be replaced.
If the machine is used in dusty conditions the air filter should be soaked in oil. See instructions under the heading Oiling
the air filter.
Oiling the air filter
Always use special filter oil. Filter oil contains a solvent to make it spread evenly through the filter. You should therefore
avoid skin contact.
Put the filter in a plastic bag and pour the filter oil over it. Knead the plastic bag to distribute the oil. Squeeze the excess
oil out of the filter inside the plastic bag and pour off the e
xcess before fitting the filter to the machine. Never use common
engine oil. This would drain through the filter quite quickly and collect in the bottom.
Spark plug
The spark plug condition is influenced by:
• Incorrect carburettor adjustment.
• An incorrect fuel mixture (too much or incorrect type of oil).
• A dirty air filter.
These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting
difficulties
.