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Al-ko AL-KO 137 SB Manual

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Fuelling; Starting / Stopping the engine
ENGLISH 12
5. Fuelling
5.1 Fuel Fuel information
A high performance two-stroke engine operated with
a petrol:oil mixture (petrol + oil = fuel mixture) or with
a special fuel mixture for two-stroke engines
available from specialists powers this machine.
We recommend the proprietary “Aspen 2-takt”
special fuel mixture. Please observe the special fuel
manufacturer’s instructions.
Information on individual mixing of the fuel mixture
Normal or super unleaded petrol can be used for
individual mixing purposes (minimum octane
number 92 RON).
When using a particularly high quality proprietary 2-
stroke engine oil such as the “SOLO Profi 2T-
Motoröl” which we supply, we recommend an
oil:petrol mixing ratio of 1:50 (2%).
When using other brands of 2-stroke oil we
recommend a mixing ratio of 1:25 (4%).
Only use proprietary 2-stroke engine oil!
Never store fuel mixture longer than 3 - 4 weeks.
Fuel mixture table
Petrol in
litres
Oil in litres
SOLO 2T
engine oil
2% (50 : 1)
Other two-
stroke oils
4% (25 : 1)
1
0.020
0.040
5
0.100
0.200
10
0.200
0.400
Unsuitable petrol or deviations in the mixing ratio
may lead to serious engine damage!
Avoid direct skin contact with petrol and
avoid
inhaling petrol fumes - health hazard!
5.2 Fuelling
While fuelling always follow all safety instructions
and take all safety precautions.
Handle fuel only with the engine turned off. Carefully
clean the area around the filler inlet. Place the
machine with the fuel inlet pointing upwards.
Unscrew the tank lid and fill the fuel mixture up to the
lower edge of the filler neck. Use a funnel with filter
to prevent tank contamination. After filling the tank
replace the tank lid and tighten firmly.
6. Starting / Stopping the engine
6.1 Half throttle start position
• Grip the handle; the safety locking key (3) is
activated via the grip area, which also enables
throttle lever (2) to be regulated.
• Press throttle lever fully down.
• Whilst holding the throttle lever down, move stop
switch (1) towards "Start"
( ), and release the
throttle lever.
The part throttle stop is cancelled by brief operation
of the throttle control.
6.2 Choke and primer
Adjust choke as follows:
• With a cold engine, position choke lever (7) up
towards "Close"
.
• With a warm engine, position choke lever (7)
down towards "Open" .
When first starting or if the fuel tank has been
completely drained and has been refilled, press
primer (8) several times (at least 5x) until the fuel is
visible in the plastic bulb.
Press the decompression valve (6) every time
before pulling on the starter handle to make the
startup process easier. After starting, the
decompression valve automatically returns to its
normal position.
Fig. 11
Fig. 12
… 32 …


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