If you don‘t have a tachometer, do not
set the highspeed adjusting screw any
leaner by turning it beyond the standard
setting.
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Slight correction
PD\
be necessary.
Use a
WDFKRPHWHU
to set the high speed
adjusting screw
+
to obtain the highest
possible engine speed. From that
position, turn the high speed adjusting
screw
+
1/8 counterclockwise (richer)
or as far as stop. Avoid risk of engine
damage which can be caused by lack of
lubrication and overheating -
•
Check air filter and clean it if
necessary.
•
Set idle speed correctly.
•
Warm up the engine.
Turn the high speed adjusting
screw
+
and low speed adjusting
screw
/
clockwise (leaner) at
higher altitudes.
Turn the screws very slowly and
carefully - slight changes have a
noticeable effect on the engine’s
running behavior.
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VFUHZ
The high speed adjusting screw
+
alters the power output and
maximum off-load engine speed.
If you turn this screw too far clock-
wise and make the setting too lean,
there is a risk of engine damage.
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It is usually necessary to change
the setting of the idle speed
adjusting screw
/$
after
every correction to the low
speed adjusting screw
/
.
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Turn the idle speed adjusting
screw
/$
clockwise until
the engine runs smoothly.
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Idle setting is too lean.
Turn the low speed adjusting screw
/
counterclockwise until engine
runs and accelerates smoothly.
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