Q: Does the cutting line need to be round or square for the STIGA SGT 500 AE mower?

The cutting line for the STIGA SGT 500 AE must be round. This device exclusively uses monofilament nylon lines with a diameter of 1.6 mm , which are round (circular in cross-section), and not square or flat. According to the manual, it is strictly prohibited to install metal cutting elements or any other forms of line than the standard nylon prescribed. This also applies to flat or square variants. Important points: Exact diameter required: 1.6 mm Material: exclusively monofilament nylon Shape: round Reel capacity: approximately 3 meters The system advances automatically as it wears Using any other type or shape of line may damage the device and void the manufacturer's warranty.

Q: How to correctly fill the spool with line for the STIGA GT 500e trimmer?

To load the line into the spool of the STIGA GT 500e: Use only 1.6 mm diameter nylon line . Cut two equal segments of 3 m long. Insert one end of the line into the hole located inside the spool and pull it out through the opposite hole. Wind the line clockwise following the arrows indicated on the spool. Leave about 15 cm of line protruding on each side. Secure each end to the designated anchor point on the spool. Important: Only use nylon line to avoid the risk of injury.

Q: Can a triangular blade be used with the STIGA TR 24 Li trimmer?

The STIGA TR 24 Li trimmer is absolutely not compatible with triangular blades. The manufacturer's manual explicitly states: it is strictly forbidden to use metal, reinforced plastic, or any kind of rigid blades on this model. This trimmer is designed exclusively for nylon line . The cutting head is an automatic system that gradually releases the line as it wears during cutting. The characteristics of the cutting head are: Maximum line diameter: 1.65 mm Cutting width: 25 cm Allowed line type: nylon line exclusively Using triangular blades or any other accessory not approved by STIGA would pose several serious risks. It could irreparably damage the cutting system, overload the 24V lithium-ion motor and battery, and especially create a danger for the user with high-speed projectiles. It would also void the product's 2-year warranty. For optimal maintenance of your edges and grass, always use compatible nylon line with a maximum diameter of 1.65 mm. This type of line offers excellent cutting efficiency for grass and small shrubs, with the advantage of a rotation speed of 8000 rpm that ensures a clean and even cut.

Question 1

Does the cutting line need to be round or square for the STIGA SGT 500 AE mower?

Accepted Answer

The cutting line for the STIGA SGT 500 AE must be round. This device exclusively uses monofilament nylon lines with a diameter of 1.6 mm, which are round (circular in cross-section), and not square or flat.

According to the manual, it is strictly prohibited to install metal cutting elements or any other forms of line than the standard nylon prescribed. This also applies to flat or square variants.

Important points:

Exact diameter required: 1.6 mm
Material: exclusively monofilament nylon
Shape: round
Reel capacity: approximately 3 meters
The system advances automatically as it wears

Using any other type or shape of line may damage the device and void the manufacturer's warranty.

Question 2

What type and diameter of wire can be used for the STIGA SGT 500 AE mower?

Accepted Answer

The STIGA SGT 500 AE mower is equipped with a cutting head featuring a nylon wire system with automatic release. It uses exclusively nylon wires with a diameter of 1.6 mm.

Important: The manufacturer formally specifies to use only approved nylon wires. It is strictly forbidden to mount metal cutting elements (blades, knives) on this device, which is designed to operate only with wire.

The spool can hold approximately 3 meters of wire, with an extension of about 15 cm outside the cutting head. The automatic release system allows the wire to be extended as it wears without stopping the device.

If you need to replace the wire, make sure to use a nylon wire of the same diameter (1.6 mm) to ensure the performance and safety of your mower.

Question 3

How to correctly fill the spool with line for the STIGA GT 500e trimmer?

Accepted Answer

To load the line into the spool of the STIGA GT 500e:

Use only 1.6 mm diameter nylon line. Cut two equal segments of 3 m long.
Insert one end of the line into the hole located inside the spool and pull it out through the opposite hole.
Wind the line clockwise following the arrows indicated on the spool.
Leave about 15 cm of line protruding on each side.
Secure each end to the designated anchor point on the spool.

Important: Only use nylon line to avoid the risk of injury.

Question 4

Why does my STIGA BC 700e B mower get stuck immediately after replacing the conical pair?

Accepted Answer

If your STIGA BC 700e B mower gets stuck immediately after replacing the conical pair (3 or 4-point blade), several causes may explain this problem. Here’s how to identify and resolve each of them.

First, check the nut tightening: The most common cause of blockage is excessive tightening of the outer bolt/nut securing the blade. According to the manufacturer's procedure, you should tighten the nut (Fig. 8.E) completely clockwise with the provided wrench, but not to the point of excessive force. Over-tightening can jam the blade and completely block rotation. Slightly loosen the nut (a quarter turn) and test the free rotation of the blade by hand. It should turn without any particular effort.

Ensure proper alignment: During reinstallation, you must absolutely respect the critical step: press the locking button (Fig. 8.A) and manually rotate the blade until it clicks into the hole of the inner ring, temporarily blocking rotation. This step ensures proper alignment of the internal gears. If this step was omitted or poorly executed, the blade may be misaligned, causing immediate motor blockage.

Clean all debris from the system: Dried grass clippings, plant remnants, or even a small twig can get lodged between the blade and the chassis or in the transmission mechanism. Before reinstalling the new conical pair, carefully clean the area with a brush or dry cloth. Also, check that the contact surface between the blade and the rings is clean and free of dust or accumulated grease.

Check the condition of the transmission parts: Visually inspect the inner ring (Fig. 8, internal part) and the outer ring for any damage, cracks, or wear. If these components are damaged, they may prevent free rotation and require replacement. Also, ensure that the engagement surface (the hole where the blade clicks in) is free of debris or damage.

Be cautious with lubrication: While lubrication is important, excess grease or oil around the transmission can cause blockage. The manual specifies to keep the system clean and free of excessive grease. If lubricant was applied during installation, clean the contact areas with a dry cloth to remove any excess. Light lubrication of the locking button is acceptable, but avoid applying it to the engagement surfaces or internal gears.

Test manual rotation: Once reassembled, try to rotate the blade by hand while applying slight pressure (without pressing the locking button). The rotation should be smooth and without significant resistance. If you feel resistance or blockage, there is a mechanical issue. In this case, check that the nut is not too tight, that the alignment is correct, and that all debris has been removed. If the problem persists after these checks, it may indicate a defect in the internal transmission components that requires intervention from an authorized STIGA service center.

Quick summary: slightly loosen the nut, strictly adhere to the alignment with the locking button, clean all visible debris, and check manual rotation before reinstalling the battery. These steps resolve most immediate blockages after replacing the conical pair.

Question 5

Can a triangular blade be used with the STIGA TR 24 Li trimmer?

Accepted Answer

The STIGA TR 24 Li trimmer is absolutely not compatible with triangular blades. The manufacturer's manual explicitly states: it is strictly forbidden to use metal, reinforced plastic, or any kind of rigid blades on this model.

This trimmer is designed exclusively for nylon line. The cutting head is an automatic system that gradually releases the line as it wears during cutting. The characteristics of the cutting head are:

Maximum line diameter: 1.65 mm
Cutting width: 25 cm
Allowed line type: nylon line exclusively

Using triangular blades or any other accessory not approved by STIGA would pose several serious risks. It could irreparably damage the cutting system, overload the 24V lithium-ion motor and battery, and especially create a danger for the user with high-speed projectiles. It would also void the product's 2-year warranty.

For optimal maintenance of your edges and grass, always use compatible nylon line with a maximum diameter of 1.65 mm. This type of line offers excellent cutting efficiency for grass and small shrubs, with the advantage of a rotation speed of 8000 rpm that ensures a clean and even cut.

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