Handleiding MTD BC52 (pagina 14 van 16) (Engels)

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Operating manual English

Maintenance and cleaning

Caution

Before working on the unit:

– Switch off the engine.

– Wait until all moving parts have

come to standstill; the engine

must have cooled down.

– Remove spark-plug terminal

from the engine to prevent

the engine from starting

unintentionally.

Have all repairs carried out

by a specialist workshop only.

At the end of the season have

the unit inspected and serviced

by a specialist workshop.

Do not splash the unit with water,

otherwise electric components may

be damaged. Clean the unit after

every use. Failure to clean the unit

can damage the materials and

cause malfunctions.

Installing the cutting line

(depending on model)

Always use a replacement cutting

line with a diameter of 3.0 mm.

If using a cutting line which has

a length other than the one indica-

ted, the engine may overheat

or misfire. There are two methods

of replacing the cutting line:

– Winding a new line onto

the spool

– Fitting a spool with a prewound

line

Winding a new line onto

the spool

Fig. 16

 Press both retaining plates (1)

of the spool housing (2) and

remove the spool together

with spool cover (3).

Fig. 17

 Clean spool housing (1), spring

(2) and spool (3) together

with spool cover (4).

Use a clean cloth.

 Check the toothing (5) for wear

on the spool housing (1), the

spool (3) and on the spool cover

(4). If required, replace damaged

parts.

 Take approximately 3 metres

of new trim line and fold in half.

Note

Always use the specified line length!

The line may not be released

correctly if it is too long.

Fig. 18

 Insert the folded end of the trim

line into the retaining plate

of the spool.

 Wind the lines in tight, even

layers onto the lower and upper

halves of the spool.

Observe the winding direction

indicated on the spool!

Fig. 19

 Press the ends of the line into

the two opposing retaining slots.

Fig. 20

 Insert the spool into the spool

cover and feed the ends

of the line through the opposing

slots in the spool cover.

Fig. 21



Press pre-assembled unit (3) out

of the inner spool and spool cover

into the spool housing (2) until

the retaining plates (1) engage.

Fitting a spool with a prewound

line

Fig. 16

 Press both retaining plates (1)

of the spool housing (2) and

remove the spool together with

spool cover (3).

 Take spool out of the spool

cover.

Fig. 17

 Clean spool housing (1), spring

(2) and spool cover (4).

Use a clean cloth.

 Check the toothing (5) for wear

on the spool housing (1) and on

the spool cover (4). If required,

replace damaged parts.

Fig. 20

 Insert a new spool into the spool

cover and feed the ends of the

line through the opposing slots

in the spool cover.

Fig. 21

 Press pre-assembled unit (3)

out of the inner spool and spool

cover into the spool housing (2)

until the retaining plates (1)

engage.

Cleaning the air filter

Clean and lubricate the air filter

after every ten operating hours.

This is an important part of mainte-

nance. If the air filter is not serviced,

the warranty will be deemed null

and void.

Fig. 22

 Open air filter cover:

Press retaining plate (1) and

remove cover (2).

 Remove the air filter (3).

Fig. 23

 Wash the filter with detergent

and water. Flush out the filter

thoroughly, leave to drip and dry

completely.

Fig. 24

 Use adequately clean oil (SAE

30) to lubricate the filter easily.

Fig. 25

 Press on the filter to distribute

the oil and remove excess oil.

 Install filter.

 Attach air filter cover again,

ensuring that it engages.

Note

If the unit is used without the air

filter, the warranty will be voided.

Adjust carburettor

Fig. 26

The idle speed can be set with the

screw (1). This work may be carried

out by a specialist workshop only.

Replace petrol filter

(depending on model)

If required – This work may

be carried out by a specialist

workshop only.

Check/replace spark plug

Use only original spark plugs

or ones approved by the manu-

facturer.

The correct electrode gap

is 0.6–0.7 mm. Every 25 operating

hours take out the spark plug and

check its condition.

 Stop the engine and leave

it to cool down.

 Remove spark-plug terminal.

 Remove dirt from around

the spark plug.

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