1. Introduktion
Thank you for choosing the LEHMANN LGALM-4037 Cordless Lawnmower. This manual provides essential information for the safe and efficient operation, assembly, maintenance, and troubleshooting of your new lawnmower. Please read this manual thoroughly before first use and keep it for future reference.
The LGALM-4037 is designed for efficient lawn care, featuring a 37 cm cutting width, a 40-liter grass collection bag, and a 5-step cutting height adjustment from 25 mm to 75 mm. It is powered by a 4.0 Ah battery, providing cordless convenience for lawns up to 400 m².

Image 1.1: The LEHMANN LGALM-4037 Cordless Lawnmower, including the battery and charger.
2. Sikkerhedsinstruktioner
ADVARSEL: Læs alle sikkerhedsadvarsler, instruktioner, illustrationer og specifikationer, der følger med dette elværktøj. Undladelse af at følge alle instruktionerne nedenfor kan resultere i elektrisk stød, brand og/eller alvorlig personskade.
- Brug altid passende personlige værnemidler (PPE) såsom sikkerhedsbriller, robust fodtøj og høreværn, når du bruger plæneklipperen.
- Hold børn, tilskuere og kæledyr væk fra driftsområdet.
- Inspect the area to be mowed and remove any objects that could be thrown by the blade (e.g., stones, sticks, wires).
- Do not operate the lawnmower in wet conditions or on steep slopes.
- Always disconnect the battery before cleaning, adjusting, or performing any maintenance on the lawnmower.
- Sørg for, at alle afskærmninger og sikkerhedsanordninger er på plads og fungerer korrekt før brug.
- Never lift or carry the lawnmower while the motor is running.
- Store the lawnmower in a dry, secure place out of reach of children.
3. Pakkens indhold
Pak forsigtigt alle varer ud, og sørg for, at du har modtaget følgende komponenter:
- LEHMANN LGALM-4037 Lawnmower Unit
- Håndtagssamling (øvre og nedre sektion)
- Opsamlingspose til græs
- 4.0 Ah litium-ion-batteri
- Batterioplader
- Brugervejledning (dette dokument)
- Safety Key (Child Lock)
If any items are missing or damaged, please contact LEHMANN customer support immediately.
4. Samling og opsætning
4.1. Håndtagssamling
- Attach the lower handle section to the main mower body using the provided bolts and knobs. Ensure it is securely fastened.
- Connect the upper handle section to the lower handle section, aligning the holes and securing with the remaining bolts and knobs.
- Route any cables along the handle and secure them with the cable clips provided.
4.2. Samling af græsopsamlingspose
Assemble the grass collection bag by attaching the fabric bag to the plastic frame. Ensure all clips are securely fastened.
4.3. Opladning og installation af batteri
- Before first use, fully charge the 4.0 Ah battery using the supplied charger. Connect the charger to a power outlet and insert the battery. The indicator lights on the charger will show the charging status.
- Once charged, slide the battery into the battery compartment on the lawnmower until it clicks into place.
- Insert the safety key into its slot next to the battery. The mower will not operate without the safety key inserted.

Image 4.1: The 40V Lithium-Ion battery and charger. Ensure the battery is fully charged before use.
5. Betjening
5.1. Start og stop af plæneklipperen
- Ensure the battery is installed and the safety key is inserted.
- Tryk og hold sikkerhedsknappen på håndtaget nede.
- While holding the safety button, pull the bail lever towards the handle. The motor will start.
- To stop the lawnmower, release the bail lever. The motor will stop immediately.
5.2. Justering af klippehøjde
The LEHMANN LGALM-4037 offers 5 cutting height positions, ranging from 25 mm to 75 mm. To adjust the cutting height:
- Ensure the lawnmower is turned off and the safety key is removed.
- Find højdejusteringshåndtaget på siden af plæneklipperen.
- Pull the lever outwards and move it to the desired height setting. Release the lever to lock it into position.

Image 5.1: The 5-step cutting height adjustment mechanism, ranging from 25 mm to 75 mm.
5.3. Klippetips
- For at opnå de bedste resultater, slå tørt græs.
- Overlap cutting swaths slightly to ensure an even cut.
- Avoid overloading the motor by cutting excessively long grass in one pass. Raise the cutting height if necessary.
- Regularly empty the grass collection bag to maintain optimal performance.

Image 5.2: The LGALM-4037 is recommended for lawns up to 400 m².

Image 5.3: The lawnmower features a 37 cm cutting width for efficient mowing.
6. Vedligeholdelse
WARNING: Always remove the safety key and battery before performing any maintenance or cleaning.
6.1. Rensning
- After each use, clean the underside of the mower deck to prevent grass clippings from hardening. Use a brush or scraper; do not use water directly on the motor or electrical components.
- Tør plæneklipperens yderside af med enamp klæde.
- Clean the grass collection bag regularly. It can be rinsed with water and allowed to dry completely before reattaching.
6.2. Knivpleje
Periodically inspect the cutting blade for sharpness and damage. A dull or damaged blade can lead to poor cutting performance and increased motor strain. If necessary, have the blade sharpened or replaced by a qualified service technician.
6.3. Batteriopbevaring
Store the battery in a cool, dry place, away from direct sunlight and extreme temperatures. For long-term storage, it is recommended to store the battery with a partial charge (around 50%) to prolong its lifespan.
7. Fejlfinding
| Problem | Mulig årsag | Løsning |
|---|---|---|
| Plæneklipperen starter ikke | Batteri ikke opladet Sikkerhedsnøgle ikke indsat Bail lever not engaged Overbelastningsbeskyttelse aktiveret | Oplad batteriet Insert safety key fully Engage bail lever fully Allow motor to cool down, remove obstruction |
| Dårlig skæreydelse | Mat eller beskadiget klinge Klippehøjden er for lav til græs Græsopsamlingspose fuld | Slib eller udskift kniven Øg klippehøjden Empty grass collection bag |
| Overdreven vibration | Beskadiget eller ubalanceret blad Løse komponenter | Inspicer og udskift bladet om nødvendigt Kontroller alle fastgørelseselementer og spænd efter behov |
| Motor stopper under drift | Lavt batteri Overload due to thick grass Blokering i bladområdet | Genoplad batteriet Raise cutting height, mow slower Remove obstruction (with battery removed) |
8. Specifikationer
| Feature | Specifikation |
|---|---|
| Modelnummer | LGALM-4037 |
| Mærke | LEHMANN |
| Strømkilde | Batteri (40V) |
| Batterikapacitet | 4.0 Ah |
| Skærebredde | 37 cm |
| Justering af klippehøjde | 5 positioner (25 mm - 75 mm) |
| Græsopsamlingsposekapacitet | 40 liter |
| Anbefalet græsplæneareal | Op til 400 m² |
| Motortype | Brushless Induction Motor |
| Produktmål (L x B x H) | 128 x 42 x 105 cm |
| Varens vægt | 12.5 kg |
| Farve | Sort/rød |

Image 8.1: Key specifications of the LEHMANN LGALM-4037 Lawnmower.

Image 8.2: The powerful 40 Volt Induction Motor provides efficient performance.
9. Garanti og support
LEHMANN-produkter er fremstillet efter høje kvalitetsstandarder og er garanteret mod fabrikationsfejl. For specifikke garantivilkår henvises til garantikortet, der følger med dit produkt, eller besøg den officielle LEHMANN-side. webwebsted.
For technical support, spare parts, or service inquiries, please contact LEHMANN customer service. When contacting support, please have your model number (LGALM-4037) and purchase date ready.
Du kan finde mere information og kontaktoplysninger på LEHMANN Butik på Amazon.





