Husqvarna 322, Workshop Manual

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502 71 14-01

501 60 02-02

Fuel system

Max speed

Models  322 and 325 are equipped with an ignition system with
speed control 12 500 r/min.

When checking the speed on a trimmer no part of the cord
should be extended.

Check the speed using the tachometer 502 71 14-01.

●

Carefully screw in (clockwise) the L and H needles until they
bottom. Then screw out the H needle 2 1/2 turns and the
L needle 1 turn.

Use the special screwdriver 501 60 02-02.

●

Start the engine and run warm for 10 minutes.

Idling speed T-screw

Let the engine idle for about 30 seconds or until the speed has
stabilised. Adjust the idling speed T-screw until the engine
idles without stopping.

●

Turn the screw clockwise if the engine stops.

●

Turn the speed anticlockwise to lower the speed.

Correctly adjusted carburettor

A correctly adjusted carburettor means that the engine acceler-
ates without hesitation and it splatters a little at full throttle.

●

A too lean adjusted L needle can cause starting difficulties
and bad acceleration.

●

A too lean adjusted H needle results in lower power, bad
acceleration and/or damage to the engine.

●

A too rich setting of the “L” and “H” needles give accelera-
tion problems or a too low working speed.

NOTE!

If the cutting equipment rotates while idling the T-screw should
be turned anticlockwise until it stops.

Low speed needle L

Find the highest idling speed by slowly turning the low speed
needle clockwise and anticlockwise. When the highest speed
has been found, turn the L needle 1/4 turn anticlockwise.

High speed needle H (does not apply to engines with a
speed limiter)

NOTE!

If machines are equipped with a speed-controlled ignition system
the engine cannot be adjusted to max. speed, but must be set
according to the instructions for CARB/EPA (see page 17).

The high speed needle H affects the engine's power and speed.
A too lean H needle setting (H needle screwed in too far) gives
too little fuel to the engine resulting in damage to the engine.

Run the engine at full throttle for about 10 seconds. The H
needle is set correctly when the engine “splatters” a little.

If the muffler smokes heavily, at the same time as the engine
“splatters” a great deal, the setting is too “rich”. Turn the H
needle clockwise until you find the setting that sounds right.

NOTE!

A tachometer should always be used to find the optimal setting.

The recommended max. speed must not be exceeded.

3 Eng, 11-18

98-12-14, 17.07

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