Husqvarna 450 X Torq Owners Manual

GENERAL SAFETY PRECAUTIONS
English – 11115 13 81-26 Rev.3 2009-01-14
Cutting equipment
This section describes how to choose and maintain your 
cutting equipment in order to:
• Reduce the risk of kickback.
• Reduce the risk of the saw chain breaking or jumping 
off the bar.
• Obtain optimal cutting performance.
• Extend the life of cutting equipment.
• Avoid increasing vibration levels.
General rules
•Only use cutting equipment recommended by us!  
See instructions under the heading Technical data.
•Keep...

GENERAL SAFETY PRECAUTIONS
12 – English115 13 81-26 Rev.3 2009-01-14
•Number of drive links. The number of drive links is 
determined by the length of the bar, the chain pitch 
and the number of teeth on the bar tip sprocket.
• Bar groove width (inches/mm). The groove in the bar 
must match the width of the chain drive links.
• Chain oil hole and hole for chain tensioner. The bar 
must be matched to the chain saw design.
Chain
•Chain pitch (inches)
• Drive link width (mm/inches)
• Number of drive links....

GENERAL SAFETY PRECAUTIONS
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Sharpening cutting teeth
To sharpen cutting teeth you will need a round file and a 
file gauge. See instructions under the heading Technical 
data for information on the size of file and gauge that are 
recommended for the chain fitted to your chain saw.
• Check that the chain is correctly tensioned. A slack 
chain will move sideways, making it more difficult to 
sharpen correctly.
• Always file cutting teeth from the inside face. Reduce 
the...

GENERAL SAFETY PRECAUTIONS
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445
•Loosen the bar nut that holds the clutch cover and 
chain brake. Use the combination spanner. Then 
retighten the bar nut as tightly as you can by hand.
• Raise the tip of the bar and stretch the chain by 
tightening the chain tensioning screw using the 
combination spanner. Tighten the chain until it does 
not sag from the underside of the bar.
• Use the combination spanner to tighten the bar nuts 
while lifting the tip of the bar...

GENERAL SAFETY PRECAUTIONS
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Lubricating cutting equipment
Chain oil
Chain oil must demonstrate good adhesion to the chain 
and also maintain its flow characteristics regardless of 
whether it is warm summer or cold winter weather.
As a chain saw manufacturer we have developed an 
optimal chain oil which, with its vegetable oil base, is also 
biodegradable. We recommend the use of our own oil for 
both maximum chain life and to minimise environmental 
damage. If our...

GENERAL SAFETY PRECAUTIONS
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Chain drive sprocket
The clutch drum is fitted with one of the following drive 
sprockets:
A   Spur sprocket (the chain sprocket is welded on the 
drum)
B   Rim sprocket (replaceable)
Regularly check the degree of wear on the drive sprocket. 
Replace if wear is excessive. Replace the drive sprocket 
whenever you replace the chain.
Needle bearing lubrication
Both versions of sprockets have a needle bearing on the 
drive shaft, which has...

ASSEMBLY
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Fitting the bar and chain
445
Check that the chain brake is in disengaged position by 
moving the front hand guard towards the front handle.
Remove the bar nuts and remove the clutch cover (chain 
brake). Take off the transportation ring (A).
Fit the bar over the bar bolts. Place the bar in its rearmost 
position. Place the chain over the drive sprocket locate it 
in the groove on the bar. Begin on the top edge of the bar.
Make sure that the edges of the...

ASSEMBLY
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Fit the bar over the bar bolts. Place the bar in its rearmost 
position. Place the chain over the drive sprocket locate it 
in the groove on the bar. Begin on the top edge of the bar.
Make sure that the edges of the cutting links are facing 
forward on the top edge of the bar.
Fit the clutch cover and locate the chain adjuster pin in the 
hole in the bar. Check that the drive links of the chain fit 
correctly over the drive sprocket and that the chain is...

FUEL HANDLING
English – 19115 13 81-26 Rev.3 2009-01-14
Fuel
Note! The machine is equipped with a two-stroke engine 
and must always be run using a mixture of petrol and two-
stroke 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.
Petrol
•Use good quality unleaded or leaded petrol.
•CAUTION!  Engines equipped with catalytic...

FUEL HANDLING
20 – English115 13 81-26 Rev.3 2009-01-14
Fuelling
Clean the area around the fuel cap. Clean the fuel and 
chain oil tanks regularly. The fuel filter must be replaced 
at least once a year. Contamination in the tanks causes 
malfunction. Make sure the fuel is well mixed by shaking 
the container before refuelling. The capacities of the chain 
oil tank and fuel tank are carefully matched. You should 
therefore always fill the chain oil tank and fuel tank at the 
same time.
Fuel safety
•Never...