HL 91 K
English
15
NOTICE
Replace any damaged parts!
N Insert felt filter (5) form-fittingly into
the filter housing
N Set knob for warm start (1) to g
N Fit filter cover (3) – make sure not to
tilt the screw (2) – insert screw and
tighten
Exhaust emissions are controlled by the
design of the engine and components
(e.g. carburation, ignition, timing and
valve or port timing).
The carburetor of the machine has been
adjusted at the factory for optimum
performance and fuel efficiency in all
operating states.
Setting the idle speed
Engine stops when idling
N Turn the idle speed screw (LA)
slowly clockwise until the engine
runs smoothly.
Cutting blades move when idling
N Turn the idle speed adjusting
screw (LA) slowly counterclockwise
until the cutting blades stop moving
WARNING
If the cutting blades continue to move in
idle even after adjustment, have the
machine repaired by a STIHL servicing
dealer.
Engine Management Adjusting the Carburetor
0208BA036 KN
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