Flail mower for Güde walk-behind tractor GSM 501 – 500 mm, adjustable 10–70 mm
The GSM 501 transforms a standard Güde walk-behind tractor into a multipurpose machine for managing difficult terrain. Unlike a traditional tiller, which cuts and turns the soil, the flail system is specialised in shredding grass, branches, bushes and wild vegetation, leaving them on the ground as organic mulch. Ideal for neglected gardens, uncultivated land, field edges and public green areas.
The rotating flail system, not fixed blades, offers greater tolerance to obstacles: stones, thick branches and exposed roots are struck and deflected rather than causing the machine to kick back. The nominal rotation speed of 3,200 rpm is moderate compared with professional flail mowers, which exceed 5,000 rpm, and is ideal for continuous work on uneven surfaces without overheating.
The adjustable cutting height from 10 to 70 mm allows adaptation to different uses: close cutting at 10 mm for maintained lawns, coarse mulching at 50–70 mm for branches and bushes. Adjustment is carried out via a manual lever without special tools.
Distinctive features:
- Robust belt drive – Protects the walk-behind tractor from sudden overloads such as stones and roots. ALXA750 replacement belt available from Krollit
- PTO drive – Standard cardan shaft, compatible with the Güde GME 6.5V walk-behind tractor and other models with PTO output, provided diameter and speed are compliant
- Adjustable blade drum – 240 mm diameter blade roller, replaceable blades, spare part codes available
- Robust 55.8 kg structure – Balanced weight reduces stress on the walk-behind tractor frame, suitable for 6–8 hours of daily work
- Low-profile design – Dimensions of 880 × 660 × 500 mm allow garage storage and easy handling in narrow areas
Who the GSM 501 is suitable for
| Profile |
Suitable? |
Reason |
| Garden owner with Güde walk-behind tractor |
Ideal |
Complementary attachment for expanding walk-behind tractor functions; 500 mm working width is sufficient for gardens of 500–1,500 m² |
| Green area maintenance operator / small landscaper |
Suitable |
Quality shredding for branches and wild vegetation; reliable belt drive; standard PTO compatibility |
| Farmer / professional gardener |
Not recommended |
3,200 rpm speed is not competitive with professional flail mowers exceeding 5,000 rpm; continuous 8+ hour cycles require dedicated rather than complementary machines |
Not suitable for: Standalone use without a compatible walk-behind tractor; urban areas with very limited space, as the 880 × 660 mm footprint requires room; very dense vegetation or areas with trees, branches >40 mm; daily industrial operations over hundreds of hectares.
Technical specifications
Shredding capacity and performance
| Working width |
500 mm |
| Adjustable cutting height |
10–70 mm, 6 indicated positions |
| Blade drum diameter |
240 mm |
| Nominal rotation speed |
3,200 rpm |
| Cutting type |
Rotating flails, not fixed blade |
| Mulching function |
Yes, shredding and spreading |
| Height adjustment |
Manual lever, no special tools required |
Transmission and drive
| Transmission type |
Belt drive |
| Standard belt |
ALXA750 |
| Walk-behind tractor drive |
PTO / cardan shaft |
| Coupling type |
Standard cardan shaft connection |
| Overload protection |
Belt, slip protection |
Dimensions and weight
| Length |
880 mm |
| Width |
660 mm |
| Height |
500 mm |
| Net weight |
55.8 kg |
| Gross weight, with packaging |
65.4 kg |
| Packaging, L × D × H |
900 × 650 × 480 mm |
Compatibility
| Reference walk-behind tractor |
Güde GME 6.5V (#95187) |
| PTO output |
Standard |
| Required PTO speed |
~3,200 rpm at maximum engine speed |
| Cardan shaft diameter |
European standard |
Compliance and safety
| CE mark |
Yes – Machinery Directive 2006/42/EC |
| Q9 certification |
Yes – Güde German quality standard |
| Güde item number |
95208 |
| EAN code |
4015671842022 |
| Place of manufacture |
Germany |
Standard equipment
- Complete GSM 501 flail mower
- Blade drum, 240 mm blade roller
- Cutting height adjustment lever
- PTO drive with cardan joint
- ALXA750 drive belt
- Bearings and axles assembled
- User manuals in Italian
- Safety data sheet
- CE and conformity certificates
Frequently asked questions
What is the difference between a flail mower and a tiller for a walk-behind tractor?
The flail mower (GSM 501) cuts vegetation and leaves it shredded on the ground as mulch. The tiller cuts and turns the soil to prepare the seedbed. They are complementary attachments: use the flail mower for neglected gardens and branches, and the tiller for vegetable garden preparation. The GSM 501 is versatile thanks to its cutting height adjustment.
Is the GSM 501 compatible with my Güde GME 6.5V walk-behind tractor?
Yes. The GSM 501 is certified compatible with the GME 6.5V (#95187) because they share the European PTO standard. If you own another Güde model, check that it has a PTO output with a speed of approximately 3,200 rpm. Contact Krollit support for non-standard compatibility.
What is the rotation speed of the GSM 501 drum?
The nominal speed is 3,200 rpm with the walk-behind tractor engine at maximum speed. This moderate speed, compared with professional flail mowers exceeding 5,000 rpm, protects against premature wear and allows continuous work on uneven terrain without belt overheating.
How heavy is the GSM 501 and how is it mounted on the walk-behind tractor?
The net weight is 55.8 kg, or 65.4 kg with packaging. Mounting requires: (1) attaching the frame to the walk-behind tractor using standard supports, (2) coupling the cardan shaft to the walk-behind tractor PTO, (3) tensioning the belt. Manual procedure: approximately 20–30 minutes. The user manual provides specific diagrams.
Does the GSM 501 cut thick branches or only low grass?
The rotating flail system is designed for grass, branches and soft vegetation, with branches up to approximately 20–30 mm in diameter. Thick branches over 40 mm or young trees require a chainsaw. The adjustable cutting height from 10 to 70 mm is ideal for grass mulching and maintaining domestic shrubs.
What maintenance does the GSM 501 require?
Moderate maintenance: (1) Belt inspection every 10 hours for tension and wear; (2) Cleaning of flail blades after each use to remove vegetation residues; (3) Bearing check every 20 hours; (4) Lubrication of the drum rotation shaft every 40 hours with multipurpose NLGI 2 grease; (5) Belt replacement every 100–150 hours, depending on vegetation.
Is the GSM 501 suitable for very large gardens over 2,000 m²?
Partially. The 500 mm width is efficient, but the 3,200 rpm speed and walk-behind tractor power require extended working times of 6–8 hours per day. For professional areas over 5,000 m² with frequent shredding, choose dedicated high-speed three-phase 230 V flail mowers with power above 15 kW.
Can I adjust the cutting height while working?
Yes, the height adjustment lever allows the position to be changed from 10 to 70 mm during operation without stopping. The quick change, approximately 30 seconds between positions, is practical for adapting the cut to ground variations such as humps, dips and obstacles.
