Herzberg HG-5200 Manuel D'instructions page 13

IMPORTANT
A clogged air filter may increase fuel consumption while cutting down the engine power.
And operate the brush cutter without the air filter or with a deformed filter element will quickly ruin the engine.
FUEL FILTER
Take the filter out of the fueling port using a small wire hook. Disconnect the filter assembly from the fuel pipe
and unhook the retainer to disassemble it. Clean the components with gasoline.
IMPORTANT
A clogged fuel fitter may cause poor acceleration of the engine.
INTAKE AIR COOLING VENT
☆ Check the intake air-cooling vent and the area around the cylinder
cooling fins and remove any waste which has attached itself to the brush
cutter.
IMPORTANT
☆
Note that failing to do so could cause the muffler to become overheated
and that this in turn could cause the brush cutter to catch on fire.
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Check and clean the filter element in warm soapy water as
required. Dry completely before installing. If the element is broken or
shrunk replace with a new one. (F14)
(1) cover
(2) Element
(3) screen
(4) Body
SPARK PLUG
Remove and inspect the spark plug and clean the electrodes as
necessary with brush.
The spark gap should be adjusted to 0.6 - 0.7 mm. (F 15)
AIR CLEANER