Introduction
This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your Bosch Cordless Grass Trimmer UniversalGrassCut 18V-26-500. Please read this manual thoroughly before first use and keep it for future reference.

Figure 1: Bosch Cordless Grass Trimmer UniversalGrassCut 18V-26-500 and its packaging. This image shows the complete product, highlighting its compact design and the included carton packaging.
Safety Instructions
Always observe basic safety precautions to reduce the risk of fire, electric shock, and personal injury. This product is designed for grass cutting and edge trimming. Do not use it for any other purpose.
- Personal Protective Equipment: Always wear safety glasses, long trousers, and sturdy footwear when operating the trimmer.
- Battery Safety: Use only Bosch 18V system batteries and chargers. Do not expose batteries to heat or direct sunlight.
- Work Area: Keep children, bystanders, and pets away from the work area. Clear the area of debris before starting.
- Plant Protector: Utilize the integrated plant protector to shield trees and plants from accidental cutting.
- Handling: Ensure a firm grip on the tool. Avoid operating in wet conditions.
Setup
1. Assembly
The UniversalGrassCut 18V-26-500 typically comes with minimal assembly required. Ensure all components are securely fastened before use.
- Handle Adjustment: Adjust the auxiliary handle to a comfortable working position.
- Telescopic Shaft: Extend the telescopic shaft to a height that allows for an ergonomic and natural work posture. Secure the locking mechanism.
- Guard Installation: Ensure the safety guard is correctly and securely installed over the cutting line.
2. Battery Installation and Charging
This model is supplied without a battery and charger. Use only compatible Bosch 18V system batteries and chargers.
- Insert a fully charged 18V Bosch battery into the battery slot until it clicks into place.
- To charge the battery, refer to the separate instructions provided with your Bosch 18V charger. A 2.0 Ah battery typically charges in 65 minutes with an AL 18V-20 Charger.
Operating Instructions
1. Starting and Stopping
- To start the trimmer, press the safety lock-off button and then squeeze the trigger switch.
- To stop the trimmer, release the trigger switch.
2. Grass Trimming
Hold the trimmer firmly with both hands. Swing the trimmer from side to side, keeping the cutting head parallel to the ground. Avoid hitting hard objects.
3. Edge Trimming (Easy Edging Function)
The Easy Edging function allows for a smooth transition from trimming to edging.
- To activate edging, tap and twist the handle. This will rotate the cutting head to a vertical position.
- Walk along the edge of your lawn or pathway, guiding the trimmer to create a clean edge.
4. Tilt Function
The tilt function enables easy cutting in hard-to-reach areas and under obstacles.
- Adjust the angle of the cutting head as needed to access difficult spots, such as under benches or around garden ornaments.
5. Semi-Automatic Spool
The semi-automatic spool feeds the line with each trigger release, eliminating the need for manual adjustments during operation.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your grass trimmer.
- Cleaning: After each use, disconnect the battery and clean the trimmer with a damp cloth. Remove any grass clippings or debris from the cutting head and ventilation slots. Do not use solvents.
- Line Replacement: When the cutting line is depleted, replace it with genuine Bosch replacement line. Refer to the product specifications for the correct line type and diameter.
- Storage: Store the trimmer in a dry, secure place, out of reach of children. Ensure the battery is removed before storage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Trimmer does not start. | Battery not inserted correctly or discharged. Safety lock-off not pressed. | Ensure battery is fully inserted and charged. Press safety lock-off before squeezing trigger. |
| Cutting line does not feed. | Line tangled or depleted. | Check for tangles and clear. Replace cutting line if depleted. |
| Reduced cutting performance. | Cutting line worn or incorrect technique. | Replace cutting line. Ensure proper trimming technique (swinging motion). |
Specifications
| Feature | Detail |
|---|---|
| Model | UniversalGrassCut 18V-26-500 |
| Item Model Number | 06008C1F01 |
| Battery Voltage | 18V (Battery not included) |
| Charging Time (2.0 Ah battery) | 65 minutes (with AL 18V-20 Charger) |
| Cutting Diameter | 26 cm (10.24 inches) |
| No-load Speed | 8500 rpm |
| Weight (without battery) | 2 kg (4.4 pounds) |
| Product Dimensions | 52.36 x 10.24 x 13.39 inches |
| Color | Green |
Warranty and Support
For warranty information and customer support, please refer to the documentation provided with your purchase or visit the official Bosch Home and Garden website. Keep your proof of purchase for warranty claims.
Manufacturer: Bosch
Brand: Bosch Home and Garden
Contact: Refer to the official Bosch website for regional contact information and service centers.