AL-KO BC 4125 II-S, User Instructions, Page: 18 / 260

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Fuel and Operating fluids
18 BC 4125 II-S
FUEL AND OPERATING FLUIDS
Safety
WARNING!
Fire danger! Petrol is highly flammable!
Store petrol in designated containers only.
Only refuel in open air.
Never smoke while refilling!
Do not open the tank cap while the engine is
running or if the machine is hot.
Replace a damaged petrol tank and/or tank
cap.
Always close the tank cap.
If petrol has been spilt:
Do not start the engine
Do not start the equipment
Clean the equipment
WARNING!
Never leave an engine running in an en-
closed space. Toxic hazard!
Preparing a fuel mixture
ADVICE
Only use fuel in a ratio of 25:1.
1. Pour petrol and a branded 2-stroke oil into a
suitable container in accordance with the ta-
ble.
2. Mix both parts thoroughly.
Table of fuel mixing ratios
Mixing procedure Petrol Mixing oil
1 l 40 ml
3 l 120 ml
25 parts petrol:
1part mixing oil
2-stroke mixing oil
5 l 200 ml
STARTUP
CAUTION!
Always perform a visual check prior to
start-up.
The device may not be used if there are any
loose, damaged or worn out mounting parts
or if the cutting unit is loose, damaged or worn
out.
Always operate the trimmer with the guard.
Always observe the operating instructions
supplied by the engine manufacturer.
Check the cutting parts for damage or cracks
before use, and exchange any damaged or
worn parts for original spare parts.
Starting the engine
WARNING!
Never leave an engine running in an en-
closed space. Toxic hazard!
Before start-up, shorten the cutting string to
13 cm to avoid overloading the engine.
Observe local ordinances regarding opera-
ting times.
Choke settings
CHOKE RUN
Kaltstart
CAUTION!
Risk of kickback!
Always pull the starter cord straight out.
Do not let it snap back too quickly.
see Figure 7
1. Set the ignition switch to the “Start” position.
2. Lock the gas lever.
a) Press the “Lock off” switch (2) inwards.
Then simultaneously press the gas lever
(3) and the gas lever lock (4) .
b) Release the “Lock off” switch. The gas
lever latches into full throttle.
see Figure 6
3. Set the choke (1) to the “CHOKE” position.
4. Squeeze the fuel pump (2) 10 times.
5. Pull the starter cord out straight 3-4 times until
the engine starts (turns on) quickly and audi-
bly.
6. Once the engine has started: set the choke to
“RUN”.
7. Pull out the starter cord until the engine starts.
8. If the engine fails to start, please repeat steps
1-7.
Warm start
1. ZSet the ignition switch to “Start".
2. Set the choke to “RUN”.