Bedienungsanleitung Viking ME 443 (Seite 44 von 250) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Portugiesisch, Spanisch, Schwedisch, Norwegisch)

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0478 121 9920 D - EN

Wear limits:

Distance A:

The cutting edges may not be ground back

by more than 15mm.

Distance B:

The minimum width of the mowing blade

must not be less than 39 mm.

Distance C:

The blade thickness must be at least

2mm at any point.

The check should be performed using a

slide calliper.

If the supplied standard blade is not

installed in the lawn mower, but e.g. the

multi-blade, which is available as a special

accessory, different wear limits apply.

12.6 Removing and installing the

mowing blade

1 Removing:

● Use a suitable wooden block (1) to

counterhold the mowing blade (2).

● Tighten the blade fastening screw (3).

Remove the mowing blade (2) and

blade fastening screw (3).

2 Installing:

● Clean the blade contact surface and

blade bushing.

● Fit the mowing blade (2) onto the blade

bushing with the curved edges pointing

upwards. Locating lugs (4) must be

located in bores (5) of the mowing

blade.

● Use a suitable wooden block (1) to

counterhold the mowing blade (2).

● Screw in the blade fastening screw (3)

and tighten to a torque of 10 - 15Nm.

12.7 Sharpening the mowing blade

VIKING recommends having the mowing

blade sharpened by a technician.

Operation of the machine is impaired in the

case of an incorrectly sharpened blade

(incorrect sharpening angle, imbalance

etc.).

Sharpening instructions:

● Remove the mowing blade (Ö 12.6).

● Cool the mowing blade when

sharpening, e.g. with water. The blade

must not be allowed to display blue

colouring, as this would reduce its

cutting quality.

● Sharpen the blade evenly to prevent

vibrations due to imbalance.

● Observe a sharpening angle of 30°.

● After sharpening, remove any

sharpening burr at the cutting edge

using fine sandpaper if necessary.

Risk of injury!

A worn or damaged mowing blade

may break off and cause serious

injuries. The instructions for blade

maintenance must therefore always

be observed.

Blades are subjected to differing

degrees of wear depending on the

location and duration of use. If you

use the machine on sandy ground

or use it frequently under dry

conditions, the blade will be

subjected to greater loads and will

wear more quickly than the

average.

In order to prevent damage to the

blade fastening screw, use a

suitable 22 mm hexagon socket

(not included in standard

equipment).

Risk of injury!

The mowing blade (2) must only be

installed as shown. The tabs (6)

must face downwards (to the lawn)

and the curved wings must point

upwards (to the machine).

Observe the specified torque of

10 - 15Nm when tightening the

blade fastening screw, as the

secure attachment of the cutting

tool depends on this. Additionally

secure the blade fastening

screw (3) with Loctite 243.

The blade fastening screw (3) must

be replaced each time the blade is

replaced.

Risk of injury!

Check the blade for damage before

installing. The blade must be

replaced if notches or cracks are

identified, if the cutting edges have

been sharpened back by more than

15 mm, or if the blade is thinner

than 2 mm at any point (Ö 12.5).

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