PRETUL 22430, Manual, Page: 10 / 28

• With a totally cold motor, loosen the worn spark plug
turning left with the spark plug spanner and remove it.
• Insert the new spark plug and tighten to the right by
hand. Then, tighten more using the spanner.
• Use care not to damage the spark plug
thread. Otherwise the motor will be seriously damaged.
• Before inspecting, cleaning or servicing the string trimmer, turn off the motor. Wait for all the moving parts to stop.
Disconnect the spark plug cable and separate it from the spark plug. Otherwise, you could be severely injured and the
equipment could get damaged.
10
Maintenance
Cleaning the air filter
• Remove the air filter cap pressing the sides and lifting it.
• Remove the air filter.
• Depending of the time it has been used you can give a
superficial cleaning to the filter by only tapping it against a
flat surface to remove most of the particles.
• You can also blow the filter with compressed air. Do it in
both sides.
• For a more complete cleaning wash the filter in
lukewarm soapy water. Rinse it and let it dry before
installing it back in the tool.
• Install back the air filter verifying it clicks in place.
• Clean the air filter as frequently as necessary to keep it
always clean. Otherwise the motor performance will
diminish.
General cleaning
• Clean and unblock all the starter unit ventilation slots
with a brush when necessary.
• Like ways, periodically clean the motor cylinder wings
and the fan wings to remove dirt. Not doing it will cause
the motor to overheat and get damaged.
Tool storage
If storing the tool a month or more, be aware of the
following:
• Drain all the contents in the fuel tank into an approved
gasoline container.
All the remaining fuel should be used again in other
equipment with a two-cycle motor with a ratio of 50:1.
• Run the motor until the rest of the fuel is consumed and
the motor shuts off by itself. This way you eliminate the fuel
residues and will avoid gum forming and damaging the fuel
system.
• Clean thoroughly.
• Store the tool in a ventilated space, away from corrosive
agents like garden chemical substances or deicing salts. Also
store away from children.
• Comply with all the government rules regarding safety in
handling and storing fuel.
Carburetor adjustment
• We recommend making carburetor adjustments in a
Authorized Service Center.
• A wrong adjustment can damage the motor and make
the warranty void.
Fuel filter
• Check the gasoline filter frequently.
• If the filter is dirty, replace it.
• If the gas tank interior is dirty rinse it with gasoline.
Spark plug replacement
ENGLISH
CAUTION
Exhaust and muffler cleansing
• The exhaust and muffler can be clogged with carbon
deposits, depending on the type of fuel, the amount of oil
used and / or the conditions the tool is used. If noticing
loss of power you should remove the deposits to restore
performance. Go to a Authorized
Service Center to have this service made.
• The muffler is equipped with an anti-spark screen inside
the muffler. After being used long periods of time the
screen gets dirty and needs to be replaced.
Go to a Authorized Service Center to
have it replaced.
• Check constantly that the muffler has
the fasteners secured and that there is no damage or
corrosion. If finding leaks, stop the tool and immediately
go to a Authorized Service Center to
have it repaired.
CAUTION