Note: The Bosch KL 1208 is an older, discontinued 12V lead-acid battery charger/maintainer (often for motorcycle, tractor, or lawnmower batteries). The manual is critical for its safe use because it has no automatic shut-off for all modes.
1. The Bosch Legacy Website (BoschAutoParts.com)
Navigate to the “Service” or “Support” section, then look for “Discontinued Products.” Search using the exact model number: KL 1208. The manual is often buried under “Old Battery Chargers.”
Line Replacement (Bump-Feed Head Typical)
- Unplug the tool.
- Press tabs and open the head cover.
- Remove old spool and clean the interior.
- Wind new line onto the spool in the indicated direction; leave about 10 cm of line free.
- Thread line ends through the eyelets on the head, seat the spool, and reattach cover.
7. Maintenance Tips
- Cleaning: Use a brush to clean wood chips from the sprocket area.
- Bar Care: Occasionally flip the guide bar over to ensure even wear. Clean the oil inlet hole on the bar with a toothpick.
- Storage: Empty the oil tank if storing for a long period. Cover the chain to prevent rust.
Safety Warning: Always disconnect the saw from the power supply before performing any maintenance, cleaning, or touching the chain. Wear safety glasses, gloves, and sturdy footwear.
8. Conclusion
The Bosch KL 1208 manual is more than a simple instruction sheet—it is an essential technical document that ensures the relay operates safely, reliably, and as intended. While modern mechanics may overlook such documentation due to the relay’s apparent simplicity, the manual remains a vital tool for correct wiring, diagnostics, and preservation of older vehicles. For anyone working with a Bosch KL 1208, locating and consulting the original datasheet is a best practice that saves time, prevents damage, and upholds safety standards.
References (Suggested for further reading):
- Bosch Automotive Electrics and Electronics (Technical Handbook) – Robert Bosch GmbH
- ISO 7588-1: Road vehicles – Electrical/electronic switching devices
- Bosch Classic Parts Catalog – www.bosch-classic.com
Safety Precautions
- Always unplug the trimmer before inspecting, adjusting, cleaning, or replacing the cutting line.
- Wear eye protection, gloves, long pants, and sturdy footwear.
- Keep bystanders, children, and pets at least 15 meters away while operating.
- Do not operate in wet conditions or expose the motor to water.
- Avoid contact with the cutting head while the tool is plugged in.
- Use only replacement lines and accessories specified by Bosch.
6) Spare parts and replacements
- Keep at least one spare fuse, commonly-used terminal blocks, and a replacement module or known-good I/O card if downtime is costly.
- Record procurement part numbers from the manual’s parts list before ordering.