General failures’ analysis
63,4 cm³ chainsaws
Idling adjustment (L)
1.
Start the unit and warm up for 60 seconds. If the engine stop, readjust T screw
2.
Close the L jet until the maximum number of rpm is reached (stop rotating the jet before the rpms drop or
the unit stalls);
3.
Adjust the T screw until the unit reaches an idle rpm between:
3700
and
4100 RPM
4.
Open the jet L until the rpm go from
3700/4100
to
2700/3100 RPM
Maximum adjustment (H)
5.
Adjustment of the jet H for wide open throttle operation whit bar (standard 20” - 51 cm) and chain until the
unit reaches an maximum rpm between:
11800 RPM
and
12800 RMP
e) Carburetor tuning
Correct tuning of the
EURO 0
and
EURO 1
(direttiva 97/68/CE + 2002/88/CE).
The jets have the following factory registration:
L=1; H=1
When, following a repair or engine overhaul, you are obliged to re-tune the carburetor to its’ original setting
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