Husqvarna 11 Bio, 39765, 13 Bio manual Checking the blades, Replacing the break-pin BioClip

MAINTENANCE

Checking the blades

To achieve the best mowing results it is important that the blades are undamaged and well-sharpened.

Check that the blades’ attachment screws are tight.

IMPORTANT INFORMATION

Replacing or sharpening the blades should be conducted by an authorised service workshop.

The blades should be balanced after sharpening.

Damaged blades should be replaced when hitting obstacles that result in a breakdown. Let the servicing dealer judge whether the blade can be repaired/ground or must be discarded.

IMPORTANT INFORMATION

The blades of the BioClip unit should always be spaced as shown in the dia- gram at 90º intervals. If not, the blades may collide and cause damage to the cutting unit.

Replacing the break-pin (BioClip)

The blades are fitted with a break-pin to protect the BioClip unit and its drive when colliding with obstacles. A domed, spring friction washer is fitted to each blade bolt. The washer must always be replaced with a new washer if the blade bolt is loosened. Otherwise the break-pin can break causing the blades to collide.

Only use original spare parts. A set containing a blade, break-pin and friction washer can be purchased from your dealer.

1.Put the unit in the service position, see “Placing in the service position”.

2.Remove the blade (2A) by removing the blade bolt with washer and friction washer (2B).

3.Remove the remains of the broken break-pin (3).

4.Make sure the contact surfaces (4) on the blade and the blade mounting are free from metal. Clean if necessary.

5.Fit one new break-pin (5) in the blade mounting.

6.Fit the blade (6), make sure it is fitted as illustrated.

7.Fit a new friction washer (7) with the concave face turned towards the blade.

8.Fit the blade bolt with washer (8). Tightening torque 45-50 Nm (4,5-5 kpm)

34 – English

Cutting unit (rear ejection)

Bio 90

5

3

2A

4

6

4

7

2B

8