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To ensure proper engine operation, the spark plug should
be clean and with adequate gap between the electrodes.
There are several factors that can affect the operation of the
spark plug: incorrect carburettor adjustment and fuel
mixture, and dirty air filter. These factors cause particles
accumulations in the spark plug electrodes, which leads to
operating problems and difficult start-ups.
If the brush cutter is running low or shows difficulties in
starting, check the spark plug condition before making any
further inspections.
1. Remove the cap (6), unscrew the spark plug (6) with the
wrench supplied and check that it is clean. If it is dirty,
remove the soot with a brush;
2. If the spark plug is "wet", with excess fuel, place a clean
cloth over the spark plug hole and pull the recoil starter
several times without the spark plug installed;
3. Measure the distance between the electrodes with
appropriate tools. The distance should be between 0.6-
0.7 mm. If necessary, bend the electrode until enough
clearance is reached;
4. Install the spark plug with your hand to prevent damage
to the thread and tighten it to compress the sealing
washer, using the wrench provided;
5. If the spark plug does not produce any sparks, replace
it.
A loose spark plug may overheat and cause damage
to the engine.
Always use the type of spark plug recommended by
the manufacturer (VIVELA5510). The use of an
incorrect spark plug can damage the cylinder.
Storage
Preparing storage for long periods is vital to avoid problems
and increase the useful life of the brush cutter.
Never store the equipment with petrol in the tank.
Depending on the region and storage conditions, petrol can
deteriorate and oxidize, causing damages in the carburettor
and fuel system, difficult starts and clogging caused by
particle accumulation.
Before storage proceed as follows:
1. Empty the fuel tank;
2. Start the engine until it stops due to lack of fuel;
3. Remove the spark plug and add 2-stroke engine oil (5-
10 cl) to the cylinder through the spark plug hole;
4. Place a clean cloth over the spark plug hole and pull the
starter handle to dispense the oil to the cylinder;
5. Pull the recoil starter slowly while feeling some
resistance. The piston rises and the intake and exhaust
valves are closed. Leaving the engine in this position will
help protect against internal corrosion;
6. Reinstall the spark plug.
Cleaning
The brush cutter must be thoroughly cleaned after each
use. Remove any waste accumulated in the blade (grass,
weeds, wires) or the rotation bolt.
Careful handling protects the equipment and extends its
service life.
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