Manual Al-ko AL-KO 137 SB (page 35 of 124) (English, German, Dutch, French, Italian, Spanish)

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Using your brushcutter; Operating and maintenance instructions

ENGLISH 15

7.5 Information regarding the line head

(available as accessory)

When using the nylon head, always ensure that you

operate only with the correct length of line. When the

contact shield is fitted, the line will always be

trimmed to the permissible length automatically (a

line trimming blade is fitted into the shield). There is

a high risk of injury, and the engine is subjected to

excessive loads leading to a risk of damage, if nylon

lines are left too long.

Therefore, when converting the cutting tool from

grass cutter blade to nylon head, always fit the

standard contact shield together with the protective

bar and fitted line trimming blade.

Adjusting the cutting line

When using a semi-automatic nylon head:

(schematic diagram)

Whilst the brushcutter is running without load, but

with rotating nylon head, lightly push the nylon head

several times onto ground with growth cover. The

cutting line will be dispensed in stages. With each

action, approx. 30 mm line will be dispensed. The

line trimming blade will correct any excess length.

When the cutting line is fully spent, you can replace it

with line available Ø 2,4 mm under part no. 6900942

or Ø 3,0 mm part no. 6900974 (accessory).

8. Operating and maintenance instructions

8.1 General operating and maintenance

instructions

The maintenance and the repair of modern machines

as well as their safety-relevant assemblies require

qualified specialised training and a workshop

equipped with special tools and test equipment.

Consequently the manufacturer recommends that all

tasks not described in these operating instructions be

carried out by a specialised workshop. That

specialist has the required training, experience, and

equipment at his disposal, to provide you with the

most cost-effective solution for such work. He will

provide additional help in word and deed.

After a running-in time of app. 5 hours, all accessible

screws and nuts (except the carburettor adjusting

screws) must be checked for tightness and they must

be retightened, if required.

Check the cutter regularly and whenever you notice

any irregularities, or when the cutter/contact shield

becomes blocked. For this, switch off the engine and

wait until the cutter has come to a complete standstill.

Pull the spark plug cap, and remove grass, debris,

etc. from the cutter support. Immediately replace

blunt or damaged tools, even if they display only

small cracks – do a ”ping” test.

It is best to store the equipment in a dry, safe location

with a full fuel tank. There should be no open flame or

similar nearby. For longer periods without using the

equipment (longer than four weeks), see chapter “9.8

Shutdown and storage”.

8.2 Gearbox lubrication

To lubricate the bevel gear drive, use SOLO "Special

gearbox grease" (part no. 008318025). Check the

grease level weekly and top up, if required (approx.

every 20 - 50 hours).

Remove the filler plug from the side of the gearbox. If

no grease is visible inside, top up with grease (top-up

quantity approx. 5 – 10 g).

Replace and tighten the filler plug.

Please note: Do not overfill with grease, as that may

lead to the gearbox overheating. Never fill the

gearbox casing to the top with grease.

Tip: If required, top up with a maximum of 5g grease.

It is preferable to check more frequently (e.g. before

you start working) whether grease is still visible.

Your SOLO dealer workshop is happy to help you in

case of doubt.

Fig. 16

Fig. 17

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Al-ko AL-KO 137 SB Manual

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