1. Úvod a bezpečnostní informace
Thank you for choosing the AL-KO Highline 51.9 SP-H Petrol Lawn Mower. This manual provides essential instructions for the safe and efficient operation, maintenance, and troubleshooting of your new lawn mower. Please read this manual thoroughly before initial use and keep it for future reference.
1.1 Obecná bezpečnostní upozornění
- Přečtěte si manuál: Always read and understand the entire instruction manual before operating the machine.
- Osobní ochranné prostředky (OOP): Wear appropriate safety gear, including sturdy footwear, long trousers, and hearing protection.
- Udržujte jasno: Ensure that other persons, especially children and pets, are kept at a safe distance from the operating area.
- Manipulace s palivem: Handle fuel with extreme care. Petrol is highly flammable. Refuel outdoors and do not smoke while refueling.
- Provoz na svahu: Při práci na svazích buďte mimořádně opatrní. Sekejte napříč svahy, nikdy ne nahoru a dolů.
- Inspekce: Before each use, inspect the machine for damaged parts, loose fasteners, or fuel leaks.
2. Konec produktuview
The AL-KO Highline 51.9 SP-H is a robust petrol lawn mower designed for efficient lawn care. It features a 51 cm cutting width, a powerful 3.2 kW engine, and a self-propelled drive system for effortless operation. Key functionalities include central cutting height adjustment, mulching, and side discharge.

Figure 2.1: AL-KO Highline 51.9 SP-H Petrol Lawn Mower, front-side view.
2.1 Klíčové vlastnosti
- Šířka řezu: 51 cm for efficient coverage of large areas.
- Výkon motoru: 3.2 kW for reliable performance.
- Samohybný: Wheel drive for reduced effort during operation.
- Centrální nastavení výšky sečení: Easy adjustment from 30 mm to 80 mm.
- 4INONE Function: Mowing, catching, mulching, and side discharge capabilities.
3. Nastavení a počáteční příprava
3.1 Vybalení a montáž
- Opatrně vyjměte všechny součásti z obalu.
- Unfold and secure the handle assembly using the provided fasteners. Ensure all cables are routed correctly and not pinched.
- Assemble the grass catcher according to the instructions and attach it to the mower.

Figure 3.1: Mower showing the 4INONE function label, indicating versatility.
3.2 Initial Checks and Fueling
- Motorový olej: Before first use, check the engine oil level. If necessary, add suitable 4-stroke engine oil up to the 'MAX' mark on the dipstick. Refer to the engine manual for oil specifications.
- Palivo: Fill the fuel tank with fresh, unleaded petrol (minimum 95 RON). Do not overfill. Ensure the fuel cap is securely tightened.
- Zapalovací svíčka: Verify that the spark plug cable is securely connected to the spark plug.
4. Návod k obsluze
4.1 Startování a zastavení motoru
- Začátek: Ensure the spark plug cable is connected. Push the primer bulb (if equipped) 3-5 times. Hold the engine brake lever (safety bar) against the handle. Pull the starter cord firmly until the engine starts.
- Zastavení: Release the engine brake lever. The engine will stop automatically.
4.2 Nastavení výšky sečení
The cutting height can be centrally adjusted using a single lever. This mower offers 7 cutting height positions from 30 mm to 80 mm.
- Ensure the engine is switched off and the blade has stopped rotating.
- Locate the central cutting height adjustment lever, typically on the side of the mower deck.
- Zatáhněte páku směrem ven a nastavte ji do požadované výšky. Uvolněním páky ji zajistěte v dané poloze.

Obrázek 4.1: Strana view of the mower, illustrating its profile and handle position.
4.3 Techniky sečení
- Pro dosažení nejlepších výsledků sekejte, když je tráva suchá.
- Avoid cutting more than one-third of the grass height at a time.
- Overlap each pass slightly to ensure an even cut.
- Change mowing direction regularly to prevent matting of the grass.
4.4 Mulching Function
The mulching function finely chops grass clippings and returns them to the lawn as natural fertilizer. To engage mulching:
- Vyjměte lapač trávy.
- Insert the mulching plug into the discharge opening.
- Ensure the mulching plug is securely in place before starting the engine.
4.5 Side Discharge Function
For areas with very tall grass where catching is not desired, the side discharge function can be used.
- Remove the grass catcher and mulching plug.
- Attach the side discharge chute to the side opening of the mower deck.
- Ensure the chute is securely attached before operation.

Figure 4.2: Illustration of MAXAIRFLOW technology, enhancing grass collection and mulching performance.
5. Údržba
Regular maintenance ensures the longevity and optimal performance of your AL-KO lawn mower. Always switch off the engine, disconnect the spark plug cap, and allow the engine to cool before performing any maintenance.
5.1 Po každém použití
- Čištění: Clean the mower deck, grass catcher, and wheels of grass clippings and dirt. Use a brush or a damp cloth. Do not use high-pressure cleaners.
- Inspekce: Check for any loose screws, nuts, or damaged parts. Tighten or replace as necessary.
5.2 Péče o čepel
The cutting blade should be inspected regularly for wear, damage, or imbalance. A dull or damaged blade can lead to an uneven cut and increased engine strain.
- Ostření: Have the blade sharpened by a qualified service technician.
- Nahrazení: Replace severely damaged or unbalanced blades with genuine AL-KO spare parts.
5.3 Údržba motoru
Refer to the separate engine manual for detailed maintenance schedules and procedures for the engine components.
- Vzduchový filtr: Pravidelně čistěte nebo vyměňujte vzduchový filtr, zejména v prašném prostředí.
- Zapalovací svíčka: Zapalovací svíčku každoročně kontrolujte a čistěte. V případě opotřebení ji vyměňte.
- Výměna oleje: Change the engine oil after the first 5 operating hours, then annually or every 50 operating hours.
5.4 Skladování
- Sekačku důkladně vyčistěte.
- Pokud je palivo skladováno déle než 30 dní, vypusťte palivovou nádrž nebo přidejte stabilizátor paliva.
- Store the mower in a dry, well-ventilated area, protected from frost and direct sunlight.
6. Řešení problémů
This section provides solutions for common issues you might encounter. For problems not listed here or if solutions do not resolve the issue, contact AL-KO customer support or a qualified service center.
| Problém | Možná příčina | Řešení |
|---|---|---|
| Motor nestartuje | No fuel; Spark plug cable loose; Engine brake lever not engaged; Dirty spark plug; Old fuel. | Add fresh fuel; Connect spark plug cable; Hold engine brake lever; Clean/replace spark plug; Drain and refill with fresh fuel. |
| Nerovnoměrný výsledek řezu | Dull or damaged blade; Incorrect cutting height; Mowing too fast. | Sharpen/replace blade; Adjust cutting height; Mow at a slower pace. |
| Nadměrné vibrace | Bent or unbalanced blade; Loose engine mounting bolts. | Inspect and replace blade if bent/unbalanced; Check and tighten all bolts. |
| Motor ztrácí výkon | Dirty air filter; Clogged fuel filter; Low oil level. | Clean/replace air filter; Clean/replace fuel filter; Check and top up oil. |
7. Technické specifikace
| Funkce | Specifikace |
|---|---|
| Model | Highline 51.9 SP-H |
| Číslo dílu | 119884 |
| Výkon motoru | 3.2 kW |
| Šířka řezu | 51 cm |
| Nastavení výšky sečení | Centrální, 7 pozic |
| Minimální výška sečení | 30 mm |
| Maximální výška řezu | 80 mm |
| Hmotnost | 36.3 kg |
| Hladina akustického výkonu | 98 dB |
| Materiál | Legovaná ocel, plast |
| Typ pohonu | Self-propelled (wheel drive) |
| Funkce | Mowing, Catching, Mulching, Side Discharge |
8. Záruka a podpora
Your AL-KO Highline 51.9 SP-H Petrol Lawn Mower is covered by a manufacturer's warranty. Please refer to the warranty card included with your product for specific terms, conditions, and duration. Keep your proof of purchase for warranty claims.
8.1 Zákaznická podpora
For technical assistance, spare parts, or service, please contact your authorized AL-KO dealer or visit the official AL-KO website for contact information in your region. When contacting support, please have your model number (119884) and serial number ready.





