MAINTENANCE
•Remove the recoil spring by tapping the starter, with the inside facing downwards, gently on a work bench. If the spring pops out during assembly, coil it up from the outside, working inwards.
•Lubricate the recoil spring with light oil. Fit the pulley and tension the recoil spring.
Fitting the starter
•To fit the starter, first pull out the starter cord and place the starter in position against the crankcase. Then slowly release the starter cord so that the pulley engages with the pawls.
•Fit and tighten the screws that hold the starter.
Air filter
The air filter must be regularly cleaned to remove dust and dirt in order to avoid:
•Carburettor malfunctions
•Starting problems
•Loss of engine power
•Unnecessary wear to engine parts
•Excessive fuel consumption.
Clean the air filter daily, or more often in demanding conditions.
•Remove the air filter after taking off the air filter cover. When refitting make sure that the air filter seals tightly against the filter holder. Clean the filter by brushing or shaking it.
•The filter can be cleaned more thoroughly by washing it in water and detergent.
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.
IMPORTANT! A flocked air filter should be used to avoid excessive engine wear under extremely dusty conditions, such as cutting wood that contains sand, volcanic ash, burnt wood, or when cutting construction timber.
CAUTION! Foam air filters must be oiled before use. Use special Twin Air Oil or, if unavailable, SAE 30 oil.
Spark plug
The spark plug condition is influenced by:
•Incorrect carburettor adjustment.
•Wrong fuel mixture (too much oil).
•A dirty air filter.
These factors cause deposits on the spark plug electrodes, which may result in operating problems and starting difficulties.
•If the machine is low on power, difficult to start or runs poorly at idle speed: always check the spark plug first before taking any further action. If the spark plug is dirty, clean it and check that the electrode gap is 0.5 mm (0,020"). The spark plug should be replaced after about a month in operation or earlier if necessary.
CAUTION! Always use the recommended spark plug type! Use of the wrong spark plug can damage the piston/cylinder.
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