Carburettor Settings - Husqvarna 326 E Workshop Manual

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Fuel system
Connect the throttle cable and check that
it sits correctly in the guide on the air fi lter
connection (A) and in the cut-out (B) by
the heat guard.

Carburettor settings

WARNING!
When testing the engine in connection with carburettor adjustment,
the clutch and clutch cover must be mounted together with the shaft
and angle gear under all circumstances
Otherwise there is a risk of the clutch becoming loose resulting in
serious personal injury.
Function
The carburettor has the task of supplying a combustible fuel/air mixture to the cylinder.
The amount of this mixture is controlled by the throttle.
The mixture's composition of fuel and air is controlled by means of the adjustable "H"
and "L" needles.
The needles must be correctly adjusted in order for the engine to give maximum power
at diff erent speeds, run steadily while idling and to react quickly when accelerating.
The setting of the carburettor can vary a little depending on the humidity, temperature
and air pressure.
L = Low speed needle
H = High speed needle
T = Idle adjustment screw
• The fuel quantity in relation to the air fl ow permitted by the throttle opening is ad-
justed by the L and H jets. Turning the needles clockwise gives a leaner fuel mixture
(less fuel) and turning them anticlockwise gives a richer fuel mixture (more fuel). A
leaner mixture gives higher revs while a richer mixture gives less revs.
• The T-screw regulates the position of the throttle while the engine is idling. Turning
the screw clockwise gives a higher idling speed while turning it anticlockwise gives a
lower idling speed.
NOTE!
A revolution counter should always be used to achieve optimal setting.
The recommended max. fast idle speed must not be exceeded.
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5. Connect the throttle cable on the car-
burettor with the help of fl at nose pli-
ers. Check that the cable sits correctly
in the guide on the air fi lter connection
(A) and that it sits correctly in the cut-
out (B) by the heat guard.
6. Connect the fuel pipe between the fuel
pump and the carburettor.
Assemble the remaining parts in the re-
verse order as set out for dismantling.
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