Husqvarna H130 Mark II Workshop Manual page 34

Carburettor
15.10 Carburettor adjustment
WARNING!
The guide bar, saw chain and clutch
cover must be fitted before the chain saw
is started, other-wise the clutch may
come loose causing personal injury.
WARNING!
Wear ear protection when making
adjustments with the engine running.
WARNING!
Do not use the chainsaw until it has been
adjusted so that the saw chain is still
during idling.
NOTE! For optimal setting, a tachometer should
be used. The recommended maximum over-speed
should not be exceeded.
NOTE! If the saw chain turns when idling, the
T-screw should be turned anti-clockwise until the
saw chain stops.
Adjusting the carburettor involves adjusting the engine
to the local conditions e.g. climate, altitude, fuel and type
of 2-stroke oil.
The carburettor is equipped with three adjustment op-
tions:
• L = Low speed jet
• H = High speed jet
• T = Idling adjustment
The L- and H-jets adjust the fuel flow to match the air-
flow that the throttle valve opening allows. Turning them
clockwise makes the fuel/air mixture weaker (less fuel)
and turning them counter-clockwise makes the fuel/air
mixture richer (more fuel). A weaker mixture increases
the engine speed and a rich mixture decreases the
engine speed.
The T- screw controls the throttle position when idling.
Turning the T-screw clockwise gives faster idling, turning
it counterclockwise gives lower idling speed.
Run the chain saw for approx. 10 minutes before adjust-
ing the carburettor.
Basic factory settings
130: 588 24 79-01
H needle
L neddle
135: 588 24 79-01
H needle
L neddle
34 - English
2 + 7/8 H
1 + 3/8 L
2 + 7/8 H
1 + 3/8 L
Fig. 18