Stihl HL-KM Instruction Manual page 44

English / USA
Standard Setting
: Shut off the engine.
: Assemble the KombiTool with the
attachment mounted.
: Check the air filter and replace if
necessary.
: Check adjustment of throttle cable
and readjust if necessary - see
"Adjusting the Throttle Cable"
: "Check the spark arresting screen
(not installed in all countries) and
clean or replace if necessary.
: Carefully turn both adjusting screws
counterclockwise as far as the stop:
The high speed screw (H) and low
speed screw (L) are now 3/4 turn
open.
: Start and warm up the engine.
: Adjust idle speed with the idle speed
screw (LA) so that the tool does not
move.
22
Fine Tuning
A slight correction of the setting of the
high speed screw (H) may be necessary
if engine power is not satisfactory when
operating at high altitude or at sea level.
Rule of thumb
Rotate the high speed screw (H) about
/ turn for every 3300 ft (1000 meter)
1 4
change in altitude
: Carry out the standard setting.
: Warm up engine for about
3 minutes.
At high altitudes
: Turn the high speed screw (H)
clockwise (leaner) no further than
stop until there is no noticeable
increase in engine speed.
At sea level
: Turn the high speed screw (H)
counterclockwise (richer) no further
than stop until there is no noticeable
increase in engine speed
It is possible that maximum engine
speed will already be reached with
the standard setting in each case.
Adjusting Idle Speed
It is usually necessary to change the
setting of the idle speed screw (LA)
after every correction to the low speed
screw (L).
: Warm up engine
Engine stops while idling
: Turn idle speed screw (LA) slowly
clockwise until the engine runs
smoothly – tool must not move.
KM 110, KM 130