Introduction
Thank you for choosing the Einhell RASARRO 36/38 Kit Power X-Change Cordless Lawn Mower. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new lawn mower. Please read these instructions carefully before first use and keep them for future reference.
The Einhell RASARRO 36/38 is a powerful and versatile cordless lawn mower designed for lawns up to 450 m². It features a 36V brushless motor, a 38 cm cutting width, a 45L grass catcher, and a mulching function. The kit includes two 4.0 Ah Power X-Change batteries and a Twincharger for convenient power management.
Safety Instructions
Always observe the following safety precautions to prevent injury or damage:
- Read the entire instruction manual before operating the lawn mower.
- Wear appropriate personal protective equipment (PPE), including safety glasses, sturdy footwear, and long trousers.
- Keep children and pets away from the mowing area.
- Inspect the area for objects that could be thrown by the blades before mowing.
- Never operate the mower in wet grass or rain.
- Always switch off the mower and remove the battery pack before cleaning, maintenance, or when leaving the machine unattended.
- Do not use the mower if any parts are damaged or worn.
- Only use original Einhell Power X-Change batteries and chargers.
Package Contents
Verify that all items are present upon unpacking:
- Einhell RASARRO 36/38 Cordless Lawn Mower
- Grass Catcher (45L)
- Mulching Kit
- 2 x 4.0 Ah Power X-Change Batteries
- Power X-Change Twincharger
- Instruction Manual

Image: The complete kit, showing the lawn mower, two 4.0 Ah Power X-Change batteries, and the Twincharger.
Setup
1. Handle Assembly
Unfold the handle and secure it using the quick-release levers or knobs provided. Ensure the handle is firmly locked in place before use. The handle is adjustable for user comfort and foldable for easy storage.

Image: Close-up of the adjustable handle mechanism, highlighting its ergonomic design.

Image: Side view of the lawn mower demonstrating the foldable handle feature for compact storage.
2. Battery Charging and Installation
- Insert the 4.0 Ah Power X-Change batteries into the Twincharger.
- Connect the Twincharger to a suitable power outlet. The indicator lights will show the charging status.
- Once fully charged, remove the batteries from the charger.
- Open the battery compartment on the lawn mower and insert both charged batteries until they click into place.
- Close the battery compartment cover securely.
3. Cutting Height Adjustment
The lawn mower features a central cutting height adjustment with 6 settings, ranging from 25 mm to 75 mm. To adjust, pull the lever outwards and move it to the desired height setting. Ensure the lever locks firmly into position.

Image: Close-up of the central cutting height adjustment lever, showing the 6 available settings.
4. Grass Catcher and Mulching Kit Installation
Attach the grass catcher by lifting the rear flap and hooking it onto the mower. For mulching, remove the grass catcher and insert the mulching plug into the discharge chute. Ensure it is securely fitted.

Image: The mulching kit component, ready for installation into the lawn mower's discharge chute.
Operating Instructions
1. Starting and Stopping the Mower
- To Start: Press and hold the safety button, then pull the switch lever towards the handle. The motor will start.
- To Stop: Release the switch lever. The motor will stop immediately.
2. Mowing Techniques
- Mow in straight, overlapping lines for an even cut.
- For best results, avoid cutting more than one-third of the grass blade length at a time.
- Adjust cutting height according to grass length and desired finish.
- When mowing slopes, always mow across the face of the slope, never up and down. Exercise extreme caution.

Image: A person demonstrating the use of the Einhell RASARRO 36/38 lawn mower in a garden setting.
3. Grass Catcher Usage
The 45L grass catcher collects clippings, providing a tidy finish. The integrated filling level indicator will show when the catcher is full and needs emptying. Always switch off the mower and remove the battery before emptying the grass catcher.

Image: Close-up of the grass catcher's filling level indicator, showing its function.
4. Mulching Function
When the mulching kit is installed, the mower finely shreds grass clippings and distributes them back onto the lawn as natural fertilizer. This is beneficial for lawn health and reduces the need for emptying the grass catcher.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your lawn mower. Always remove the battery pack before performing any maintenance.
- Cleaning: After each use, clean the mower deck and grass catcher. Use a brush or cloth; do not use water jets or high-pressure cleaners.
- Blade Care: Regularly check the blade for sharpness and damage. A dull or damaged blade can lead to poor cutting results and strain the motor. Have blades sharpened or replaced by a qualified service center.
- Battery Care: Store batteries in a cool, dry place. Do not expose them to extreme temperatures. Charge batteries fully before long-term storage.
- Storage: Clean the mower thoroughly before storing. Fold the handle for compact storage in a dry, secure location, away from children.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Mower does not start. | Batteries not inserted correctly or discharged. Safety button not pressed. | Ensure batteries are fully charged and correctly inserted. Press safety button before pulling switch lever. |
| Poor cutting performance. | Dull blade. Cutting height too low for grass length. | Have blade sharpened or replaced. Increase cutting height. |
| Excessive vibration. | Damaged or unbalanced blade. Loose components. | Inspect blade for damage; replace if necessary. Check all fasteners for tightness. |
| Motor stops during operation. | Overload (e.g., very thick grass). Batteries discharged. | Increase cutting height. Mow at a slower pace. Recharge or replace batteries. |
Specifications
| Feature | Detail |
|---|---|
| Model | RASARRO 36/38 Kit |
| Model Number | 3413180 |
| Power Source | Battery Powered (Power X-Change) |
| Voltage | 36 V (2 x 18V) |
| Motor Type | Brushless |
| Cutting Width | 38 cm (15 inches) |
| Recommended Lawn Area | Up to 450 m² |
| Cutting Height Adjustment | Central, 6 settings (25-75 mm) |
| Grass Catcher Volume | 45 L |
| Mulching Function | Yes (Mulching Kit included) |
| Batteries Included | 2 x 4.0 Ah Lithium Ion |
| Charger Included | Twincharger |
| Item Weight | 17.3 kg (38.1 lbs) |
| Product Dimensions | 52.36 x 18.11 x 40.75 inches |
| Material | Aluminum |
Warranty and Support
Einhell products are manufactured to high-quality standards and undergo strict quality controls. This product is covered by a manufacturer's warranty. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official Einhell website. For technical support, spare parts, or service inquiries, please contact Einhell customer service through their official channels.
Online Resources: For additional information, FAQs, and product registration, please visit www.einhell.com.





