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Руководство по эксплуатации Страница: 42

Al-Ko 442 Руководство по эксплуатации онлайн [42/168] 768852

42 Saug-/Blasgerät 442

Maintenance and care

■

Let the filter sponge (20/3) dry thoroughly

so it no longer contains any water. A wet

filter can make the motor difficult to start.

■

Thoroughly wipe out the air filter housing

(20/2) with a cleaning rag.

3. Replacing:

■

Replace the filter sponge if it is no longer

elastic or falls apart.

4. Fitting the air filter:

■

Insert the filter sponge (20/3) on the peg

(20/4) and push it to the end stop.

■

Insert the air filter housing (20/2) to the

end stop and keep it pressed.

■

Screw in the air filter screw (20/1) until

the air filter housing (20/2) is held tight.

8.2 Maintaining the spark plug (21)

1. Removing the spark plug:

■

Pull off the spark plug connector (21/1).

■

Use the spark plug spanner (21/2) to un-

screw the spark plug (21/3).

2. Assessing the condition of the spark plug:

■

If the spark plug is reddish-brown: The

motor is working correctly and the spark

plug is in order. If necessary: Carefully

brush the spark plug (21/3) clean with a

fine wire brush (21/4).

■

If the spark plug is sooty, oily, encrusted,

melted or bridged: The spark plug is de-

fective. Install a new spark plug. Use the

specified spark plug type (see chapter 11

"Technical data", page47).

■

If, after a short period of operation, the

spark plug is defective again, the motor

and the carburettor settings must be

checked by an authorised service work-

shop.

3. Check the electrode spacing:

■

Use a feeler gauge (21/5) to check that

the electrode spacing (21/6) is 0.6 –

0.7mm. If not, carefully knock the elec-

trodes together or carefully bend them

apart.

4. If the specified interval is reached or the

spark plug is defective:

■

Install a new spark plug. Use the spe-

cified spark plug type (see chapter 11

"Technical data", page47).

5. Installing the spark plug:

■

Make sure the spark plug sealing ring

(21/7) sits on the spark plug.

■

Screw the spark plug (21/3) back in by

hand and tighten it thoroughly using the

spark plug spanner (21/2).

■

Plug the spark plug connector (21/1)

firmly back on.

8.3 Checking/replacing the fuel filter (22)

The felt-like fuel filter is located in the fuel tank

and is plugged onto the vacuum head. If the fuel

filter becomes hard, dirty or clogged, less petrol

flows to the motor. In this case, the fuel filter must

be replaced.

It is recommended that an authorised service

workshop carries out this work.

1. Preparing the appliance:

■

To empty the fuel tank: Let the motor turn

until it stops by itself.

■

Place the appliance on a flat, stable sur-

face. The cap of the fuel tank must point

upwards.

■

Wipe clean the cap of the fuel tank, the

fuel tank and the surrounding appliance

parts so that no dirt can get into the fuel

tank.

2. Checking/replacing the fuel filter:

■

Unscrew the cap (22/1) of the fuel tank

(22/2). Let the cap (22/1) hang on the

fuel tank.

■

Use a wire hook to pull the vacuum head

(22/3) out of the fuel tank (22/2).

■

Check the fuel filter (22/4). If the felt has

become hard, dirty or clogged: Pull off

the fuel filter (22/4) and slide a new fuel

filter onto the vacuum head.

3. Slide the vacuum head (22/3) back into the

fuel tank (22/2).

4. Mixing and pouring in the petrol/oil mixture:

■

see chapter 5.2 "Making and pouring in

the petrol/oil mixture", page38

8.4 Carburettor settings (23)

The following carburettor regulating screws are

visible on the appliance:

■

L = idle mixture regulating screw (23/1): Re-

duces the amount of fuel in the petrol/oil mix-

ture when the motor is warm

■

H = full load mixture regulating screw (23/2):

Increases the amount of fuel in the petrol/oil

mixture when the motor is cold

■

Idle regulating screw on the rotary choke

knob (23/3)

Al-Ko 442 Руководство по эксплуатации онлайн [42/168] 768852

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