Husqvarna 450 X Torq Owners Manual

MAINTENANCE
English – 31115 13 81-26 Rev.3 2009-01-14
General
The user must only carry out the maintenance and 
service work described in this Operator’s Manual. More 
extensive work must be carried out by an authorised 
service workshop.
Carburettor adjustment
Your Husqvarna product has been designed and 
manufactured to specifications that reduce harmful 
emissions. 
Function
•The carburettor governs the engine’s speed via the 
throttle control. Air and fuel are mixed in the 
carburettor. The air/fuel...

MAINTENANCE
32 – English115 13 81-26 Rev.3 2009-01-14
Checking the inertia brake release
Place the chain saw, with the engine switched off, on a 
stump or other stable surface. Release the front handle 
and let the saw fall by its own weight, rotating around the 
rear handle towards the stump.
When the bar hits the stump the brake should be applied.
Checking the brake trigger
Place the chain saw on firm ground and start it. Make sure 
the chain does not touch the ground or any other object. 
See the...

MAINTENANCE
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Chain catcher
Check that the chain catcher is not damaged and is firmly 
attached to the body of the chain saw.
Right hand guard
Check that the right hand guard is not damaged and that 
there are no visible defects, such as cracks.
Vibration damping system
Regularly check the vibration damping units for cracks or 
deformation.
Make sure the vibration damping units are securely 
attached to the engine unit and handle unit.
Stop switch
Start the engine...

MAINTENANCE
34 – English115 13 81-26 Rev.3 2009-01-14
use a muffler if the spark arrestor mesh is missing or 
defective.
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.
Starter
Replacing the starter cord
•Loosen the screws that hold the starter against the 
crankcase and remove the starter.
• Pull out the cord approx. 30 cm and...

MAINTENANCE
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Replacing the return and drive springs
Recoil spring (A)
•Lift up the starter pulley. See instructions under the 
heading Changing a broken or worn starter cord. 
Remember that the recoil spring is coiled under 
tension in the starter housing.
• Remove the cassette with the recoil spring from the 
starter.
• Lubricate the recoil spring with light oil. Fit the 
cassette with recoil spring in the starter. Fit the starter 
pulley and tension the recoil...

MAINTENANCE
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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...

MAINTENANCE
English – 37115 13 81-26 Rev.3 2009-01-14
”Air Injection” centrifugal 
cleaning
Centrifugal cleaning means the following: All air to the 
carburettor passes through the starter. Dirt and dust is 
centrifuged out by the cooling fan.
IMPORTANT! In order to maintain operation of the 
centrifugal cleaning system it must be regularly 
maintained. Clean the air intake to the starter, the fins on 
the flywheel, the space around the flywheel, inlet pipe and 
carburettor compartment.
Winter use
Running...

38 – English
MAINTENANCE
115 13 81-26 Rev.3 2009-01-14
Maintenance schedule
The following is a list of the maintenance that must be performed on the machine. Most of the items are described in the 
Maintenance section.
Daily maintenanceWeekly maintenanceMonthly maintenance
Clean the outside of the machine.On chain saws without a catalytic 
converter, check the cooling system 
weekly.Check the brake band on the chain 
brake for wear. Replace when less 
than 0.6 mm (0,024 inch) remains at 
the most worn...

English – 39
TECHNICAL DATA
115 13 81-26 Rev.3 2009-01-14
Technical data
Note 1: Noise emissions in the environment measured as sound power (LWA) in conformity with EC directive 2000/14/EC.
Note 2: Equivalent sound pressure level, according to ISO 22868, is calculated as the time-weighted energy total for 
noise pressure levels under various working conditions with the following time distribution: 1/3 idling, 1/3 max. load, 1/3 
max. speed.
Note 3: Equivalent vibration level, according to ISO 22867, is...

40 – English
TECHNICAL DATA
115 13 81-26 Rev.3 2009-01-14
Bar and chain combinations
The following combinations are CE approved.
Saw chain filing and file gauges
BarChain
Length, inchPitch, inchGauge, mmMax. nose radiusTypeLength, drive links (no.)
130,325
1,3
10T
Husqvarna H30
56
150,32510T64
160,32510T66
180,32510T72
200,32510T78
130,325
1,5
10T
Husqvarna H25
56
150,32510T64
160,32510T66
180,32510T72
200,32512T78