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Maintenance
Checking and adjusting the choke
wire
If the engine is producing black smoke or is difficult to start
then the choke wire (upper wire) may be incorrectly adjusted.
If doubts arise, contact your service representative.
If it is necessary to adjust the choke, proceed as follows:
1 Release the clamping screw that secures the wire casing
and set the choke control to maximum choke.
2 Check that the throttle wire is attached to the upper lever,
see diagram.
3 Pull the choke wire casing to the far right and tighten the
clamping screw.
Replacement of fuel filter
Replace the fuel filter every 100 running hours (once per
season) or more frequently if it is clogged.
Replace the filter as follows:
1 Open the engine cover.
2 Move the hose clips away from the filter. Use a pair of flat
pliers.
3 Pull off the filter from the hose ends.
4 Press the new filter into the ends of the hoses. If
necessary apply liquid detergent to the ends of the filter to
facilitate connection.
5 Push the hose clips back on the filter and tighten.
Replacing the air filter
If the engine seems to lack power or does not run smoothly
this may be because the air filter is clogged. It is therefore
important to replace the air filter at regular intervals (see
Maintenance/Maintenance Schedule for the correct service
interval).
Replace the air filter as follows:
1 Remove the air filter unit by pressing on the catches with
your fingers.
2 Remove the pre-filter and paper filter from the air filter
unit.
3 Clean the pre-filter by washing it with water and detergent.
4 Dry the pre-filter properly.
5 Tap the paper filter against a hard surface to shake off the
dust.
!
WARNING! The exhaust system is hot. Let it
cool before starting to replace the air filter.
IMPORTANT INFORMATION
Never run the engine without the air filter fitted.
The filters must not be oiled. They must be fitted dry.