Jonsered 6000+ Operator's Manual page 31

Low speed needle L
Try to find the highest idling speed, turning the low
speed needle L clockwise respectively counter-
clockwise. When the highest speed has been found,
turn the low speed needle L 1/4 turn counter-
clockwise.
CAUTION!
If the saw blade rotates while the motor is
running at idling speed, the T-screw must
be turned counter-clockwise until the saw
blade stops moving.
+ 1/4
L
Final setting of the idling speed T
Adjust the idling speed with the screw T. If it is
necessary to re-adjust, first turn the idle speed
adjusting screw T clockwise, until the chain starts to
rotate. Then turn, counter-clockwise until the chain
stops. A correctly adjusted idle speed setting occurs
when the engine runs smoothly in every position. It
should also be good margin to the rpm when the
chain starts to rotate.
!
WARNING!
Contact your servicing dealer, if
the idle speed setting cannot be
adjusted so that the chain stops.
Do not use the saw until it has
been properly adjusted or repai-
red.
MAINTENANCE
High speed needle H
The high speed needle H influences the power of
the saw. A too lean adjusted high speed needle H
(high speed needle H closed too much) gives
overrevs and damages the engine. Let the saw run
at full speed for about 10 seconds. Thereafter, turn
the high speed needle H 1/4 turn counter-clockwise.
Let the saw run again at full
speed for about 10 seconds and note the difference
of the enginesound. Repeat this procedure with the
high speed needle H turned 1/4 turn more counter-
clockwise. The saw has now been tested with the
following settings: H=±0, H=+1/4, H=+1/2 from
basic adjustment. At full speed the engine has
produced a different sound for each setting. The
high speed needle H is correctly set when the saw
"4-cycles" a little. If the saw "whistles" the setting is
too lean. If there is too much exhaust gas at the
same time as the saw "4-cycles" much, the setting
is too rich. Turn the high speed needle H until the
setting sounds correct.
NOTE! For optimum setting of the
carburettor, contact a qualified servicing
dealer who has a revolution counter at his
disposal.
recommended must not be exceeded.
H
Correctly adjusted carburettor
A correctly adjusted carburettor means that the
saw accelerates without hesitation and the saw 4-
cycles a little at max speed. Furthermore, the chain
must not rotate at idling. A too lean adjusted low
speed needle L may cause starting difficulties and
bad 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.
The maximum speed
English
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