Husqvarna 325HS Instruction manual

101 90 73-26
Workshop manual
Husqvarna Hedgetrimmers
325HS/ 325HE/ 325HDA
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2
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3
Workshop Manual
Hedge trimmers
1. Starter ___________________________________ 5
2. Ignition system ____________________________ 7
3. Fuel system _______________________________ 9
4. Centrifugal clutch _________________________ 13
5. Gear ____________________________________ 17
7. Crankshaft and crankcase__________________ 25
8. Exhaust system __________________________ 27
9. Cutting equipment ________________________ 31
© Copyright Husqvarna AB, Sweden 2000
This supplement only takes up elements specific
to the above mentioned models.
For complete information when servicing we rec-
ommend that the supplement is studied together
with theWorkshop Manual.
(Order no. 101 90 74-26)
and the supplement for brushcutters, trimmers,
pruners and hedge trimmers.
(Order no. 101 90 75-26)
Supplement for models 325HS, 325HE,325HDA
Contents
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4
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1.
Starter
Contents
General ___________________________________ 6
Replacing the drive dogs, supplement ___________ 6
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6
1
504 90 00-02
4 mm
Starter
WARNING!
Protective glasses should be worn when working on the starter to avoid injury to the
eyes if, for some reason, the return spring should fly out.
!
Replacing the drive
dogs, supplement.
Make sure the ear on the drive cup is
fitted in the cut-out on the crankshaft.
Replacing the drive
dogs, supplement
325HS75, 325HS99
Fit the balance weight in the drive cup,
if necessary.
Fit the drive cup on the crankshaft.
NOTE!
Risk for incorrect assembly. If the
weight is fitted on the wrong side of the
drive cup the blades will vibrate heavily
when the engine is running.
Deviations:
Starter handle placement.The drive
cup is fitted with a balance weight.
General
See Brushcutter 325.
The balance weight should be facing
the spark plug when the piston is in top
dead centre.
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7
2.
Ignition system
Contents
General 8
Assembling the cylinder cover 8
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8
2
504 90 00-02
4 mm
The spark in an electronic ignition system
has a very short burn time and can therefore
be interpreted as weak and can be difficult to
see while trouble shooting.
Deviations:
The cylinder cover is located using four
screws instead of three. (325HS)
325HS:The speed is limited to 11,600
rpm.
325HDA55/325HE: The speed is limited
to 10,000 rpm.
General
325HS75, 325HS99, 325HE2, 325HE3,
325HE4: See Brushcutter 325.
The thick threaded screw (for the clip
set) should be placed in the hole
closest to the gearbox.
Assembling the cylinder
cover
325HS75, 325HS99:
Check that the ignition cable is in
position in the cut-out in the gearbox.
Align the cylinder cover with the slot for
the screw pin, make sure that when the
cover is moved down that the ignition
cable is secured by the wedge shaped
cut-out in the cylinder cover.
Assembling the cylinder
cover
325HS75, 325HS99:
Fit the cylinder cover.
NOTE!
Risk for incorrect assembly.
The ignition cable can be damaged by
the flywheel if incorrectly routed. The
protective casing on the ignition cable
must be clamped in the securing ear (to
get sufficient length of ignition cable to
the wedge shaped cut-out).
If the wrong screw is placed in the hole
closest to the gearbox the threads in
the clip set will be crossed.
Ignition system
The engine is equipped with an electronic ignition
system completely without moving parts.
Consequently, a faulty component cannot be
repaired, but must be replaced by a new compo-
nent.
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9
3.
Fuel system
Contents
General __________________________________ 10
Assembling the fuel tank ____________________ 10
Max speed, modification_____________________ 11
Assembling the cylinder cover ________________ 11
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10
3Fuel system
In addition to the fuel tank and carburettor, the
fuel system consists of the air filter, fuel filter and
tank venting.
All these components interact so that the engine
receives the optimal mixture of fuel and air to
make it as efficient as possible.Very small devia-
tions in the carburettor setting or a blocked air
filter have a large effect on the running and
efficiency of the engine.
The carburettor can come from several differ-
ent manufacturers on our models, yet the
function and repair methods are essentially the
same.
General
325HS75, 325HS99, 325HDA55
325HE3, 325HE4:
See Brushcutter 325.
Deviations:
Fuel tank and modified design.The
cylinder cover is secured by four
screws. (325HS)
The speed is limited to 11,600 rpm.
(325HS)
The carburettor´s needle H is not
adjustable.(325HDA, 325HE)
The speed is limited to 10,000rpm.
(325HDA, 325HE)
Thread on two rubber supports on top
of the tank.
Position two rubber supports for the
tank on the engine.
Position the tank and align it on the
rubber supports; press down the tank.
Assembling the fuel
tank
325HS75, 325HS99:
Connect the fuel hoses.
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www.mymowerparts.com