Husqvarna 326 C Manual

							English – 11
WHAT IS WHAT?
What is what?
1 Trimmer head
2 Grease filler cap, bevel gear
3 Bevel gear
4 Cutting attachment guard
5 Shaft
6 Loop handle
7 Throttle control
8 Stop switch
9 Throttle lock
10 Cylinder cover
11 Starter handle
12 Fuel tank
13 Choke control
14 Air purge
15 Air filter cover
16 Handle adjustment
17 Locking nut
18 Support flange
19 Drive disc
20 Socket spanner
21 Operator’s manual (EPA)
22 Allen key
23 Locking pin
24 Shaft coupling 
						

							12 – English
ASSEMBLY
Fitting the loop handle
(326C)
• Position the handle on the shaft. Note that the handle 
must be mounted below the arrow on the shaft.
• Fit the screw, securing plate and wing nut as shown in the 
diagram.
• Tighten the wing nut.
Fitting the loop handle
(326L, 326Lx, 326LDx)
• Clip the loop handle onto the shaft. Note that the loop 
handle must be fitted between the arrows on the shaft.
• Slide the spacer into the slot in the loop handle.
• 326L: Fit the nut, washer and screw. 
326LX/326LDX: Fit the nut, knob and screw. Do not 
overtighten.
• Now adjust the trimmer to give a comfortable working 
position. Tighten the bolt/knob.
Assembling and dismantling the 
two-piece shaft
(326LDx)
Assembly:
• Make sure the knob is loose.
• Align the cut-out in the lower part of the shaft with the 
coupling locking tab on the upper part of the shaft. Then 
lock the sections together.
• Tighten the knob.
Dismantling:
• Undo the knob (at least three turns).
• Push the knob towards the coupling.
• Carefully twist the lower half of the shaft to unlock it.
• Hold both parts of the shaft and pull the lower part of the 
shaft out of the coupling.
Fitting the trimmer head
When fitting the cutting attachment it is extremely important 
that the raised section on the drive disc/support flange 
engages correctly in the centre hole of the cutting attachment. 
If the cutting attachment is fitted incorrectly it can result in 
serious and/or fatal personal injury.
!
WARNING! Never use a cutting attachment 
without an approved guard. See the chapter 
on Technical data. If an incorrect or faulty 
guard is fitted this can cause serious 
personal injury. 
						

							English – 13
ASSEMBLY
Fitting a trimmer guard and 
Superauto II 1 trimmer head
(326L, 326Lx, 326LDx)
• Fit the correct trimmer guard (A) for use with the trimmer 
head. Hook the guard onto the fitting on the shaft and 
secure it with the bolt (L).
• Fit the drive disc (B) on the output shaft.
• Turn the blade shaft until one of the holes in the drive disc 
aligns with the corresponding hole in the gear housing.
• Insert the locking pin (C) in the hole to lock the shaft.
•To fit the trimmer head, first separate the two halves (see 
diagram). Proceed as follows:
• Insert a finger into the centre hole of the cover (I) while 
grasping the cover with your other fingers. Using the index 
finger and thumb of your other hand, release the two 
catches (J) that engage in the cut-outs in the bottom half 
(K). Pull apart the trimmer head, grasping the cover firmly.
• Place the cover (I) and the support flange (F) on the 
output shaft.
• Fit the nut (G). The nut must be tightened to a torque of 
35-50 Nm (3.5-5 kpm). Use the socket spanner in the tool 
kit. Hold the shaft of the spanner as close to the blade 
guard as possible. 
To tighten the nut, turn the spanner in the opposite 
direction to the direction of rotation (Caution! left-hand 
thread).
• Fit the bottom half of the trimmer head (K) to the cover (I) 
by pressing them together, with the cut-outs on the bottom 
half aligned with the catches on the cover.
• To dismantle, follow the instructions in the reverse order.
Fitting other guards and cutting 
attachments
(326L, 326Lx, 326LDx)
• Fit the correct trimmer guard (A) for use with the trimmer 
head. 
Hook the trimmer guard/combination guard onto the fitting 
on the shaft and secure with the bolt (L).
• Fit the drive disc (B) on the output shaft.
• Turn the blade shaft until one of the holes in the drive disc 
aligns with the corresponding hole in the gear housing.
• Insert the locking pin (C) in the hole to lock the shaft.
• Screw on the trimmer head/plastic blades (H) in the 
opposite direction to the direction of rotation.
• To dismantle, follow the instructions in the reverse order.
Fitting the trimmer guard and 
trimmer head
(326C)
Guard
• Fit the guard as shown in the diagram. Tighten securely.
Trimmer head
• Fit the dust cup on the shaft. The nut must be completely 
covered by the dust cup.
• Hold the dust cup with a spanner to prevent the shaft from 
rotating.
• Screw the trimmer head onto the shaft.
GFI
A
B
CK
JI
K
H
H  
						

							14 – English
FUEL HANDLING
Fuel
CAUTION! The machine is equipped with a two-stroke engine 
and must always been run using a mixture of gasoline and 
two-stroke engine oil. It is important to accurately measure 
the amount of oil to be mixed to ensure that the correct 
mixture is obtained. When mixing small amounts of fuel, even 
small inaccuracies can drastically affect the ratio of the 
mixture.
Gasoline
CAUTION! Always use high grade unleaded oil mixed 
gasoline (minimum 87 RON). If your machine is equipped with 
a catalytic converter (see chapter on Technical data) always 
use a good quality unleaded petrol/oil mixture. Leaded petrol 
will destroy the catalytic converter and it will no longer serve 
its purpose.
Use low-emission gasoline, also known as alkylate gasoline, 
if it is available. 
•This engine is certified to operate on unleaded 
gasoline.
• The lowest recommended octane rating is 87. If you run 
the engine on lower octane rating than 87 so-called 
“knocking“ can occur. This leads to an increased engine 
temperature, which can result in a serious engine 
breakdown.
• When working at continuous high revs a higher octane 
rating is recommended.
Two-stroke oil
• For best results and performance use HUSQVARNA two-
stroke oil, which is specially formulated for our two-stroke 
engines. Mixture 1:50 (2%).
• Never use two-stroke oil intended for water-cooled 
outboard engines, sometimes referred to as outboard oil.
• Never use oil intended for four-stroke engines.
Mixing
• Always mix the gasoline and oil in a clean container 
intended for fuel.
• Always start by filling half the amount of the gasoline to be 
used. Then add the entire amount of oil. Mix (shake) the 
fuel mixture. Add the remaining amount of gasoline.
• Mix (shake) the fuel mixture thoroughly before filling the 
machine’s fuel tank.
• Do not mix more than one month’s supply of fuel at a time.
• If the machine is not used for some time the fuel tank 
should be emptied and cleaned.
•This engine is certified to operate on unleaded 
gasoline.
!
WARNING! Always ensure there is adequate 
ventilation when handling fuel.Gasoline, litre
Two-stroke oil, 
litre
2% (1:50)
50,10
100,20
150,30
200,40
US gallonUS fl. oz.
12 1/2
2 1/26 1/2
512 7/8
!
WARNING! The catalytic converter muffler 
gets very hot during and after use. This also 
applies during idling. Be aware of the fire 
hazard, especially when working near 
flammable substances and/or vapours. 
						

							English – 15
FUEL HANDLING
Fuelling
• Clean the area around the fuel cap. Contamination in the 
tank can cause operating problems.
• Ensure that the fuel is well mixed by shaking the container 
before filling the tank.
!
WARNING! Taking the following precautions, 
will lessen the risk of fire:
Do not smoke or place hot objects near fuel.
Always shut off the engine before refuelling. 
Always stop the engine and let it cool for a 
few minutes before refuelling.
When refuelling, open the fuel cap slowly so 
that any excess pressure is released gently. 
Tighten the fuel cap carefully after refuelling. 
Always move the machine away from the 
refuelling area before starting. 
						

							16 – English
STARTING AND STOPPING
Check before starting
• Check that the support flange is not cracked due to fatigue 
or due to being tightened too much. Discard the support 
flange if it is cracked.
• Ensure the locking nut has not lost its captive force. The 
nut lock should have a locking force of at least 1.5 Nm. 
The tightening torque of the locking nut should be 35-50 
Nm.
• Check that the blade guard is not damaged or cracked. 
Replace the blade guard if it is exposed to impact or is 
cracked.
• Check that the trimmer head and trimmer guard are not 
damaged or cracked. Replace the trimmer head or 
trimmer guard if they have been exposed to impact or are 
cracked.
• Never use the machine without a guard nor with a 
defective guard.
Starting and stopping
Starting
Ignition:
Set the stop switch to the start position.
Primer bulb: Press the primer bulb repeatedly until fuel 
begins to fill the bulb. The bulb need not be completely filled.
Choke: Set the choke control in the choke position.
Hold the body of the machine on the ground using your left 
hand (CAUTION! Not with your foot!). Grip the starter handle, 
slowly pull out the cord with your right hand until you feel 
!
WARNING! The complete clutch cover and 
shaft must be fitted before the machine is 
started, otherwise the clutch can come loose 
and cause personal injury.
Always move the machine away from the 
refuelling area before starting. Place the 
machine on a flat surface. Ensure the cutting 
attachment cannot come into contact with 
any object. 
Make sure no unauthorised persons are in 
the working area, otherwise there is a risk of 
serious personal injury. The safety distance 
is 15 metres.
!
WARNING! When the engine is started with 
the choke in either the choke or start throttle 
positions the cutting attachment will start to 
rotate immediately.  
						

							English – 17
STARTING AND STOPPING
some resistance (the starter pawls grip), now quickly and 
powerfully pull the cord. Never wrap the starter cord around 
your hand
Repeat pulling the cord until the engine starts. When the 
engine starts. return choke control to run position and apply 
full throttle; the throttle will automatically disengage from the 
start setting.
CAUTION!  Do not pull the starter cord all the way out and do 
not let go of the starter handle when the cord is fully extended. 
This can damage the machine.
CAUTION!  Do not put any part of your body in marked area. 
Contact can result in burns to the skin, or electrical shock if 
the spark plug cap has been damaged. Always use gloves. 
Do not use a machine with damaged spark plug cap.
Stopping
Stop the engine by switching off the ignition. 
						

							18 – English
MAINTENANCE
Carburettor
Your Husqvarna product has been designed and 
manufactured to specifications that reduce harmful 
emissions. After the engine has used 8-10 tanks of fuel the 
engine will be run-in. To ensure that it continues to run at peak 
performance and to minimise harmful exhaust emissions 
after the running-in period, ask your dealer/service workshop 
(who will have a rev counter at their disposal) to adjust your 
carburettor.
Function
• The carburettor governs the engine’s speed via the 
throttle control. Air and fuel are mixed in the carburettor. 
The air/fuel mixture is adjustable. Correct adjustment is 
essential to get the best performance from the machine.
• The setting of the carburettor means that the engine is 
adepted to local conditions, for example, the climate, 
altitude, fuel and the type of 2-stroke oil.
• The carburettor has three adjustment controls:  
L = Low speed jet
H = High speed jet
T = Idle adjustment screw
• The L and H-jets are used to adjust the supply of fuel to 
match the rate that air is admitted, which is controlled with 
the throttle. If they are screwed clockwise the air/fuel ratio 
becomes leaner (less fuel) and if they are turned anti-
clockwise the ratio becomes richer (more fuel). A lean 
mixture gives a higher engine speed and a rich mixture 
gives a lower engine speed.
• The T-screw regulates the throttle setting at idle speed. If 
the T-screw is turned clockwise this gives a higher idle 
speed; turning it anti-clockwise gives a lower idle speed.
Basic setting
• The basic carburettor settings are adjusted during testing 
at the factory. The basic setting is richer than the optimal 
setting and should be maintained for the first few hours the 
machine is in use. The carburettor should then be finely 
adjusted. Fine adjustment should be carried out by a 
skilled technician.
CAUTION!  If the cutting attachment rotates when the engine 
is idling the idle adjustment screw T should be turned anti-
clockwise until the cutting attachment stops.
Rec. idle speed 2700 rpm
Recommended max. speed: See the Technical data section.
Fine adjustment
• When the machine has been ”run-in” the carburettor 
should be finely adjusted. The fine adjustment should 
be carried out by a qualified person. First adjust the L-
jet, then the idling screw T and then the H-jet.
Conditions
• Before any adjustments are made, make sure that the air 
filter is clean and the air filter cover is fitted. If you adjust 
the carburettor when the air filter is dirty it will result in a 
leaner mixture when the filter is finally cleaned. This can 
lead to serious engine damage.
• Carefully turn both jets, L and H, so that they are midway 
between fully screwed in and fully screwed out.
• Do not attempt to adjust the L and H jets beyond either 
stop as this could cause damage.
• Now start the machine according to the starting 
instructions and let it warm up for 10 minutes.
Low speed jet L
Try to find the highest idling speed, turning the low speed 
needle L clockwise respectively counter-clockwise. When the 
highest speed has been found, turn the low speed needle L 1/
4 turn counter-clockwise.
CAUTION! If the cutting attachment rotates when the engine 
is idling the idle adjustment screw T should be turned anti-
clockwise until the cutting attachment stops.
Fine adjustment of the idle speed T
Adjust the idle speed using the idle adjustment screw T, if it is 
necessary to readjust. First turn the idle adjustment screw T 
clockwise until the cutting attachment starts to rotate. Then 
turn the screw anticlockwise until the cutting attachment 
stops. The idle speed is correctly adjusted when the engine 
!
WARNING! The complete clutch cover and 
shaft must be fitted before the machine is 
started, otherwise the clutch can come loose 
and cause personal injury.
!
WARNING! If the idle speed cannot be 
adjusted so that the cutting attachment 
stops, contact your dealer/service 
workshop. Do not use the machine until it 
has been correctly adjusted or repaired.
L
+ 1/4 
						

							English – 19
MAINTENANCE
will run smoothly in every position. The idle speed should also 
be well below the speed at which the cutting attachment starts 
to rotate.
WARNING! If the idle speed cannot be adjusted so that the 
cutting attachment stops, contact your dealer/service 
workshop. Do not use the machine until it has been correctly 
adjusted or repaired.
High speed jet H
The high speed jet H affects the engine power, speed, 
temperature and fuel consumption. If the high speed jet H is 
set too lean (screwed in too far) the engine speed will be too 
high and cause engine damage. Do not let the engine run at 
full speed for more than 10 seconds.
Apply full throttle and turn the high speed jet H very slowly 
clockwise until the engine slows down. Then turn the high 
speed jet H very slowly anticlockwise until the engine starts to 
run unevenly. Now turn the high speed jet H slowly clockwise 
a little way until the engine runs smoothly. 
Note that the engine should not be under load when you 
adjust the high speed jet H. You should therefore remove the 
cutting attachment, nut, support flange and drive disc before 
adjusting the high speed jet H.
The high speed jet H is adjusted correctly when the machine 
burbles a little. If the machine races then the setting is too 
lean. If the engine produces a lot of smoke and burbles a lot 
then the setting is too rich.
CAUTION!  For optimum adjustment of the carburettor, 
contact a qualified dealer/service workshop that has a 
revolution counter at their disposal. 
Correctly adjusted carburettor
When the carburettor is correctly adjusted the machine will 
accelerate without hesitation and burble a little at maximum 
speed. It is also important that the cutting attachment does 
not rotate at idle. If the low speed jet L is set too lean it may 
cause starting difficulties and poor acceleration.
If the high speed jet H is set too lean it will result in less power, 
less performance, poor acceleration and/or damage to the 
engine.
If both the L and H jets are set too rich it will results in 
acceleration problems or too low a working speed.
Muffler
CAUTION! Some mufflers are fitted with a catalytic converter. 
See chapter on Technical data to see whether your machine 
is fitted with a catalytic converter.
The muffler is designed to reduce the noise level and to direct 
the exhaust gases away from the operator. The exhaust 
gases are hot and can contain sparks, which may cause fire 
if directed against dry and combustible material.
Some mufflers are equipped with a special spark arrestor 
mesh. If your machine has this type of muffler, you should 
clean the mesh at least once a week. This is best done with a 
wire brush. On mufflers without a catalytic converter the mesh 
should be cleaned weekly, or replaced if necessary. On 
mufflers fitted with a catalytic converter the mesh should be 
checked, and if necessary cleaned, monthly. If the mesh is 
damaged it should be replaced.
If the mesh is frequently blocked, this can be a sign that the 
performance of the catalytic converter is impaired. Contact 
your dealer to inspect the muffler. A blocked mesh will cause 
the machine to overheat and result in damage to the cylinder 
and piston.
CAUTION!  Never use a machine with a defective muffler.
H
!
WARNING! Mufflers fitted with catalytic 
converters get very hot during use and 
remain so for some time after stopping. This 
also applies at idle speed. Contact can result 
in burns to the skin. Remember the risk of 
fire! 
						

							20 – English
MAINTENANCE
Cooling system
To keep the working temperature as low as possible the 
machine is equipped with a cooling system.
The cooling system consists of:
1 Air intake on the starter.
2 Fins on the flywheel.
3 Cooling fins on the cylinder.
4 Cylinder cover (directs cold air over the cylinder).
Clean the cooling system with a brush once a week, more 
often in demanding conditions. A dirty or blocked cooling 
system results in the machine overheating which causes 
damage to the piston and cylinder.
Spark plug
The spark plug condition is influenced by:
• Incorrect carburettor adjustment.
• An incorrect fuel mixture (too much or incorrect type of 
oil).
• A dirty air filter.
These factors cause deposits on the spark plug electrodes, 
which may result in operating problems and starting 
difficulties.
If the machine is low on power, difficult to start or runs poorly 
at idle speed: always check the spark plug first before taking 
any further action. If the spark plug is dirty, clean it and check 
that the electrode gap is 0.5 mm (0,020). The spark plug 
should be replaced after about a month in operation or earlier 
if necessary.
CAUTION! Always use the recommended spark plug type! 
Use of the wrong spark plug can damage the piston/cylinder. 
Check that the spark plug is fitted with a suppressor.
Shaft
The drive shaft end in the lower shaft should be lubricated 
with grease every 30 hours. There is a risk that the drive shaft 
ends (splined coupling) on models with two-piece shafts will 
seize if they are not lubricated regularly.
Air filter
The air filter must be regularly cleaned to remove dust and dirt 
in order to avoid:
• Carburettor malfunctions
• Starting problems
• Loss of engine power
• Unnecessary wear to engine parts
• Excessive fuel consumption.
Clean the filter every 25 hours, or more regularly if conditions 
are exceptionally dusty.
Cleaning the air filter
Remove the air filter cover and take out the filter. Wash it 
clean in warm, soapy water. Ensure that the filter is dry before 
refitting it. 
An air filter that has been in use for a long time cannot be 
cleaned completely. The filter must therefore be replaced with 
a new one at regular intervals. A damaged air filter must 
always be replaced.
If the machine is used in dusty conditions the air filter should 
be soaked in oil. See instructions under the heading Oiling the 
air filter.
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