Tools / Generators
User Manual for AL-KO BC 330/400/500 Series Brushcutters
User guide for AL-KO BC 330 L, BC 330 B, BC 400 L, BC 400 B, and BC 500 B brushcutters. Includes assembly, operation, maintenance, and troubleshooting.
Quick answers from the manual
Quick answer
- This manual provides instructions for the AL-KO BC 330 and BC 400/500 series brushcutters, covering assembly, operation, maintenance, and safety. p. 1, 8, 26
Key actions
- Start the engine (Cold start) p. 16, 33
- Stop the engine p. 17, 34
First start
- Prepare fuel mixture (50:1) p. 15, 33
Problems and fixes
Engine does not start
Check start procedure, spark plug, air filter, and fuel filter.
p. 21, 38Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| Fuel mixture | 50:1 | 50 parts petrol to 1 part 2-stroke oil | p. 23, 40 |
Where to find it in the PDF
- Product Overview p. 3, 10, 11, 28
- Assembly p. 4, 14, 15, 32
- Operation p. 16, 17, 33, 34
- Maintenance p. 19, 20, 36, 37
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
This manual provides essential information for the safe operation and maintenance of the AL-KO BC 330 and BC 400/500 series brushcutters. Before starting, ensure you have read the safety instructions, particularly regarding fuel handling and personal protective equipment.
Product Overview
The brushcutters are available in two handle configurations: 'Bike' handle (B models) and 'Loop' handle (L models). Both versions can be used with a spool head or a 3-toothed blade.
Assembly
Mounting the spool head: Place the driver plate on the guide pin of the angle-drive gearbox. Lock it using the Allen key and screw on the spool head (note: left-hand thread).
Fitting the blade: Place the driver plate on the guide pin, position the blade, add the flange and serrated washer, then secure with the fastening nut and split pin.
Handles: Follow the specific instructions for mounting the 'Loop' or 'Bike' handle onto the shaft using the provided rubber sleeves and screws.
Start-up
Fuel Mixture: Use a 50:1 mixture of unleaded petrol (min. 90 octane) and high-quality synthetic 2-stroke oil. Mix thoroughly in a fuel container before filling.
Operation
Starting the engine: Ensure the brushcutter is on a level, obstacle-free surface. For a cold start, set the switch to START, set the throttle, move the choke lever to CHOKE, and press the primer 7-10 times. Pull the starter handle until resistance is felt, then pull quickly. Once the engine starts, move the choke to RUN and repeat the pulling process if necessary. For a warm start, the choke is not used.
Stopping the engine: Release the throttle lever, move the switch to STOP, and wait for the cutting tool to stop completely.
Maintenance and Care
Regular maintenance is required for safe operation. This includes cleaning/replacing the air filter, checking/replacing the fuel filter, maintaining the spark plug (check electrode gap 0.6-0.7 mm), and sharpening the line cutter. Refer to the maintenance schedule for specific intervals.
Troubleshooting
If the engine fails to start or runs poorly, check the fuel mixture, spark plug condition, air filter, and fuel filter. If the engine vibrates abnormally, stop immediately and check for loose or damaged parts.
Manufacturer information
AL-KO
Practical help
Common problems
Engine does not start or starts with difficulty
Check if the engine start procedure was followed correctly, check the spark plug condition, clean the air filter, or replace the fuel filter.
Engine starts but power is low
Ensure the choke lever is in the RUN position, clean the air filter, or replace the fuel filter.
Engine vibrates abnormally
Stop the engine immediately, check for loose or damaged parts, and contact an authorized service workshop.
Before use
- Check the appliance for damage
- Ensure all safety devices are in place and functional
- Check fuel level and mixture ratio
- Ensure the cutting tool is correctly mounted and sharp
- Wear appropriate protective clothing and gear
Specs in practice
- Displacement
- Engine capacity (32.6 cm³ to 50.8 cm³ depending on model)
- Fuel mixture ratio
- 50:1 (50 parts petrol to 1 part 2-stroke oil)
Images and diagrams
- Page 3: Component overview for BC 330/400/500 B models
- Page 4: Assembly diagrams for handles, guard plate, and cutting tools
- Page 6: Maintenance procedures for air filter, fuel filter, and spark plug
Model compatibility
- Use only approved OEM cutting tools
- Use high-quality synthetic 2-stroke oil
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.