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Adjusting the idle speed, T
Adjust the idling speed with
the screw T, if it is necessary
to readjust. First turn the idle
speed adjusting screw T
clockwise until the blades
start moving. Then turn the
screw anti-clockwise until the
blades stop. The idle speed is
correctly adjusted when the
engine runs smoothly in
every position. There should
be a good margin to the
speed when the cutters start
to move. The cutters should
not move when the choke
control is in the start throttle
position.
WARNING! Contact your dealer/service workshop if the idle
speed setting cannot be adjusted so that the blades stop. Do
not use the machine until it has been properly adjusted or
repaired.
High speed needle H
The high speed needle affects
the machine's power, speed,
temperature and fuel
consumption. A too lean
adjustment on the high speed
needle H (the high speed
needle H is screwed in too
much) gives a too high speed
resulting in engine damage.
Do not allow the engine to
run at full speed for more
than 10 seconds.
Apply full throttle and turn
the high speed needle H
slowly anticlockwise until the
engine runs unevenly. The
high speed needle H is then
turned slowly clockwise a
little until the engine runs
smoothly.
Note the engine should be
run unloaded when adjusting
the high speed needle.
The high speed needle is
adjusted correctly when the
machine "splatters" a little . If the machine smokes heavily at
the same time as it "splatters" heavily the adjustment is too
rich.
NOTE! For optimum setting of the carburetor, contact a
qualified servicing dealer who has a revolution counter at his
disposal.
MAINTENANCE
T
H
H
Correctly adjusted carburetor
When the carburettor is correctly adjusted the machine will
accelerate without hesitation and the engine will splutter a
little at maximum speed. In addition, the cutters must not
move when idling or when the choke control is in the start
position. If the low speed needle is set for too lean a mixture it
can cause starting problems and poor acceleration.
A too lean adjusted high speed needle H gives lower power =
less capacity, bad acceleration and/or damage to the engine.
A too rich adjustment of the two speed needles L and H gives
acceleration problems or too low working speed.
15
English –
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