In brief: To set up the GM ASL 8 cordless sprayer, first charge the battery fully. Then assemble the hose, lance and nozzle. Carry out a test run with clean water to check the seals and operation. This ensures smooth and effective use from the very beginning.
Constantly pumping a manual pressure sprayer is tiring and results in uneven application. Gardening should be enjoyable, not exhausting. A cordless sprayer provides the solution. It delivers consistent pressure at the press of a button, turning tedious tasks into simple and precise work.
Whether you want to protect your roses from pests, fertilise the lawn or target weeds, the right equipment makes all the difference. Here, you will learn how to use your new device effectively to achieve the best results.
The key to effortless garden care is the 8-litre lithium-ion cordless sprayer "GM ASL 8" (). With its 8-litre tank, powerful lithium-ion battery and comfortable shoulder strap, it is the ideal partner for medium-sized to large gardens. Forget pumping and focus fully on applying your care and protection products precisely.
How do I set up the GM ASL 8 cordless sprayer correctly?
Careful setup lays the foundation for long-lasting, trouble-free use of your device. Take enough time over these initial steps. This will help you avoid problems later and ensure that your sprayer delivers full performance from day one.
Unpacking and initial inspection
Open the box and check the contents. It should include the 8-litre tank, spray lance with hose, various nozzles, the battery and the corresponding charger. Check all parts for visible transport damage. A quick look at the user manual will give you an overview of the specific components.
Fully charge the battery
The lithium-ion battery is the power source of your sprayer. You must charge it fully before using it for the first time. Plug the charger into a socket and connect it to the battery. The LED indicators on the charger or battery show the charge level. An initial full charging cycle conditions the battery and ensures maximum capacity and service life.
A fully charged battery is the key to consistent pressure. Plan the charging time before working in the garden so you can work without interruptions.
Assembling the sprayer
Assembly is straightforward. Screw the hose firmly onto the designated connection on the tank. Make sure it is securely seated to prevent leaks. Then connect the spray lance to the handle at the other end of the hose. Choose one of the supplied nozzles for the initial test and screw it onto the end of the lance.
First test run with clean water
Before filling the tank with expensive plant protection products, carry out a test using ordinary tap water. Fill the tank about halfway. Insert the charged battery, switch the device on and press the spray trigger. Check all connections for leaks. Familiarise yourself with the spray patterns of the different nozzles and get a feel for handling the device.
Which liquids can I use with the GM ASL 8?
The versatility of the GM ASL 8 is demonstrated by the wide range of liquids it can handle. The chemical resistance of its materials allows it to be used for many different tasks around the home and garden. However, you need to know which products are suitable and which could damage the device.
Plant protection and fertilisation
The main area of application is spraying liquid plant protection products and fertilisers. These include fungicides against fungal diseases, insecticides against pests and herbicides for weed control. You can also distribute liquid fertilisers for roses, vegetables or lawns evenly with the sprayer. Always follow the dosage recommendations from the product manufacturers.
Important information
Never use liquids containing solvents or acids, oils, paints or viscous substances. These attack the seals and can irreparably damage the pump. The device is designed exclusively for water-based, low-viscosity products.
Organic products and homemade brews
The cordless sprayer is also ideal for organic gardening. Use homemade nettle or horsetail brews to strengthen your plants. Important: Before filling the tank, filter homemade products carefully through a fine sieve or cloth. Otherwise, plant residue and suspended particles can quickly clog the fine nozzles.
Cleaning and disinfection
With mild, biodegradable cleaning products, you can also use the device to clean garden furniture, patio slabs or greenhouses. Disinfectant solutions can likewise be distributed evenly over large areas, for example in small-animal housing or to control algae on paths.
How do I adjust the sprayer for optimum results?
The correct settings determine whether your work succeeds or fails. A precisely adjusted device saves product, protects the environment and provides your plants with optimum protection. Make the most of the GM ASL 8's adjustment options.
The right nozzle for every purpose
The package usually includes several nozzles with different spray patterns. A hollow-cone nozzle produces a very fine mist and is perfect for coating leaves on all sides with insecticides or fungicides. A flat-fan nozzle is ideal for applying herbicides across paths or lawn areas. The spot jet allows you to treat individual weeds precisely.
Pro tip
Before applying any product, test the spray pattern of each nozzle with clean water on a non-sensitive surface, such as a paved driveway. This shows you exactly how the liquid is distributed and helps you determine the correct distance from the target area.
Understanding and using the working pressure
The greatest advantage of a cordless sprayer is its consistent working pressure. The electric pump ensures a steady flow of liquid from the first minute to the last. This guarantees extremely even application. You no longer need to rely on your feel when pumping and can focus fully on guiding the lance.
Ergonomics and carrying comfort
Adjust the supplied shoulder strap to suit your height. The device should sit comfortably on your back or at your side around your hip without restricting your movement. The padded support prevents pressure points. A correct posture also allows you to work for longer periods without becoming tired.
How do I know when it is the right time to apply?
Effective plant protection depends heavily on the right timing. Even the best products are of little use if they are applied at the wrong time. Pay attention to the weather and your plants' needs for the best possible results.
Pay attention to weather conditions
The ideal time is on a dry, calm and overcast day. Never spray in strong winds, as the liquid may drift onto neighbouring plants or areas (spray drift). Direct sunlight combined with spray products can cause leaf scorch. Rain shortly after application will wash away the protective film. The best times of day are therefore early morning or late evening.
Nature sets the pace. Reading the weather conditions and waiting for the right moment not only makes your work more effective, but also safer for the entire garden ecosystem.
The right technique for even application
Keep the spray lance at a constant distance of around 30 to 50 centimetres from the areas to be treated. Move in steady, slightly overlapping passes to ensure complete coverage. When treating leaves, always spray the undersides as well, as many pests and fungal spores hide there.
Safety first: preparation and protective equipment
Always wear suitable protective clothing when working with plant protection products. This includes long trousers, sturdy footwear, waterproof gloves and safety goggles. Protect nearby, sensitive surfaces as well. A fine spray mist can spread widely and damage surfaces that are not intended for treatment, such as high-quality decorations from wall sticker manufacturers. Take particular care when working near your home to avoid accidentally spraying freshly decorated walls enhanced with products from leading wallpaper manufacturers. Cover such areas carefully if necessary.
How do I properly care for and maintain my cordless sprayer?
Regular and thorough maintenance keeps your device working properly for many years. Cleaning it after every use is particularly important to prevent blockages and material damage.
Cleaning after every use
This is the most important step. Empty the tank completely. Fill it with clean water, shake it thoroughly and spray it completely empty. Repeat this process twice more (triple rinsing). Unscrew the nozzle and filter and clean these parts separately under running water with a small brush. This removes all aggressive residues.
Thorough cleaning also prevents residues from causing damage during a later, different application. Imagine that you have used a herbicide and later want to spray delicate plants with water. Residues could have disastrous consequences. The same applies to protecting materials in the home. Carelessly stored devices could leak and ruin delicate products from border manufacturers or expensive textiles.
Storing the device and battery
Store the cleaned and dry sprayer in a frost-free, dry place. Direct sunlight can make the plastic material brittle over time. Remove the battery from the device and store it in a dry place at room temperature as well. For maximum service life, the battery should be approximately half charged during longer periods of storage.
Additional advice
Occasionally lubricate the seals and O-rings with acid-free grease or silicone spray. This keeps the rubber supple, prevents cracks and ensures a lasting seal throughout the system.
Troubleshooting: What to do if...?
If the device does not spray, check the most common causes. Is the battery charged and correctly inserted? Is the nozzle blocked? Is the intake filter in the tank clean? Is the tank cap secure and is the system sealed? In most cases, the problem can be fixed in just a few simple steps.
The battery ecosystem: more than just a sprayer
The freedom offered by cordless garden tools is a major boost to convenience and safety. The GM ASL 8 comes as a practical complete set with its own battery and charger. If you continue expanding your workshop or tool shed, you will find that many manufacturers rely on cross-compatible battery platforms.
When expanding your range of cordless tools, you will come across different systems. Sets such as the "EasyFlex" value set () or the more powerful "EnergyFlex" value set () show how manufacturers build entire product families around a single battery type. Always check compatibility before using batteries and chargers across different brands. Investing in a system can be worthwhile, allowing you to operate a wide range of devices with a single battery type.
The GM ASL 8 cordless sprayer is a powerful and efficient helper that makes gardening noticeably easier. With the right setup, use and care, it will serve you reliably for many years and help you maintain healthy plants and a well-kept property. Say goodbye to laborious pumping and experience a new level of ease in garden care.
Frequently asked questions
- How long does the GM ASL 8 sprayer battery last?
- Battery life depends on how the device is used, but a full charge is enough for several tankfuls. On average, you can expect a runtime of up to 2 hours, which is more than sufficient for most gardening tasks.
- Can I spray lime milk with the cordless sprayer?
- No, spraying lime milk, paint or other thick, granular substances is not recommended. They can clog the pump and nozzles and permanently damage the device. Only use approved liquid products.
- How do I clean the sprayer after using herbicides?
- Rinse it three times with clean water. Fill, shake and spray the tank empty three times. Clean the nozzle, filter and lance separately. This prevents cross-contamination and protects your other plants from damage.
- Is the charger included with the GM ASL 8?
- Yes, the GM ASL 8 cordless sprayer is supplied as a complete set. The lithium-ion battery and matching charger are included, so you can get started after the first charging cycle.
- My sprayer has no pressure. What can I do?
- First check that the battery is charged and correctly inserted. Make sure the intake hose in the tank is not kinked and that the filter on the hose is clean. A blocked nozzle may also be the cause.