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• Do not fill the oil sump past the [FULL] (AK60) or the upper

(AH75) mark on the dipstick.

• Screw the plug of the filler neck up tightly before starting the

engine.

OIL CHANGE

• Before any maintenance operation and to avoid any risk of the

brush-cutter starting accidentally, disconnect the spark plug.

• The first emptying has to be done after the first 15 working hours.

These hours have to be considered like a burn in period during

which you have to run the engine carefully.

• Changing the oil has to be done every 50 hours or once a year for

the model AK60 or every 100 hours (6 months) for the model AH75.

Draining the engine outside.

Drain the oil out when the engine is still warm : the oil will

run out more easily than it would if it were cold.

OIL CHANGE METHOD

Be careful with used hot oil. Remove the used oil and dispose

of at authorised disposal centre.

AK60 (PICTURE 19)

• Remove the drain plug (A) on the side of the engine.
• Drain the oil into a suitable container (B).
• Replace the drain plug.

AH75 (PICTURE 20)

• Place a container under the engine to collect used oil. Remove the

dipstick (a), the oil drain plug and the washer (b).

• Drain the oil completely.
• Replace the drain plug with a new washer. Tighten thoroughly.

AK60 - AH75

• Clean carefully around the filler neck and the dipstick.
• Pour the new oil carefully into the filler hole.
• Check the oil level.
• Top up if necessary.

COOLING SYSTEM, CARBURETTOR

• Regularly remove grass cuttings around the starter unit.
• Clear the cooling fins and around the engine of any accumulations

of grass. This way you will ensure that your engine is constantly

and efficiently kept cool.

• The carburettor linkage must be kept perfectly clean.

SPARK PLUG

To ensure proper engine operation, the spark plug should not show

any deposit, and it must have a proper electrode gap. A dirty spark

plug can lead to difficulty with starting and a constant loss of engine

power.

Do not hesitate to change a worn spark plug when necessary.

Use only ETESIA original spark plugs (03861).

AK60 (PICTURE 21) / AH75 (PICTURE 22)

• Remove the spark plug with a 13/16 inch spark plug wrench.
• Check the spark plug. Replace it if it is damaged or dirty, if its sea-

ling washer is in poor condition or if its electrode is worn out.

• Clean the electrodes every 50 hours or at least once a year for the

model AK60 or every 100 hours or 6 months for the model AH75.

• Measure the electrode gap with a feeler gauge. If necessary, correct

it by bending the side electrode (a picture 23). The distance must be

0.7 - 0.8 mm.

• Screw the spark plug by hand
• After putting the spark plug in place, tighten it with a spark plug

wrench 13/16 to compress the washer (23 Nm).

• When installing a new spark plug, tighten 1/2 turns after it touches

the washer to compress it. To install a used spark plug, tighten 1/8 -

1/4 turns after it touches the washer to compress it.

• Replace the spark plug every 100 hours of operation for the model

AK60 or every 300 hours for the model AH75.

AIR FILTER

If the air filter is dirty, the flow to the carburettor will be restricted.

To prevent any carburettor malfunction, regularly maintain the air

filter.

Running the engine with loose or damaged air filter components may

cause premature wear or engine failure.

• It is inevitable that impurities will get into the air filter. That is why

it is essential that you regularly remove the cartridge of the air filter

for cleaning (every 25 hours for the AK60 model or every 50 hours

(3 months) for the AH75 model or more often in dusty conditions).

AK60 (PICTURE 24)

• Unscrew the cover (A) of the air filter and remove it.
• Carefully remove all the paper cartridge with the prefilter (B).
• Clean the inside of the lid (A) and the base (C) of the air filter.
• Remove the foam prefilter (B1) from the paper cartridge (B2).
• Clean the paper cartridge (B2) by gently tapping it on a flat surface.

Do not use solvent and do not use compressed air, as they could

damage the cartridge.

• Do not oil the cartridge. Replace it if worn or dirty, every 300 hours

or at least once a year.

• Wash the foam pre-filter (B1) in soapy water and dry thoroughly.

Oil the pre-filter element and squeeze it in the hand to distribute the

oil well and remove any excess. Reinstall it on the paper cartridge.

• Reinstall the new or cleaned cartridge (B) on its base (C).
• Replace the cover (A) of the air filter and screw it in.

AH75 (PICTURE 25)

• Detach the wing nuts (a) and remove cover (b).
• Clean the cover carefully.
• Removed carefully the paper cartridge (c) and the pre-filter element

(d). Replace them as soon as they become damaged or too dirty.

8• MAINTENANCE