MAINTENANCE
Spark plug
Needle bearing lubrication
The clutch drum has a needle bearing on the output shaft.
This needle bearing must be lubricated regularly.
The spark plug condition is influenced by:
•
•
Incorrect carburetor adjustment.
When lubricating, remove the clutch cover by loosening
the two bar nuts. Lay the saw on its side with the clutch
drum upwards.
An incorrect fuel mixture (too much or incorrect type of
oil).
•
A dirty air filter.
Lubrication involves engine oil dripping into the centre of
the clutch drum as it rotates.
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 0.020 inch (0.5
mm). The spark plug should be replaced after about a
month in operation or earlier if necessary.
Cooling system
To keep the working temperature as low as possible the
machine is equipped with a cooling system.
The cooling system consists of:
Note! 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.
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Air intake on the starter.
Air guide plate.
Lubricating the bar tip sprocket
Fins on the flywheel.
Cooling fins on the cylinder.
Cylinder cover (directs cold air over the cylinder).
Lubricate the bar tip sprocket each time you refuel. Use
the special grease gun and a good quality bearing grease.
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.
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English – 37
| Categories | Chainsaw Manuals, Husqvarna Chainsaw Manuals |
|---|---|
| Tags | Husqvarna 445, Husqvarna 445e, Husqvarna 450e |
| Model Year | 2005, 2006, 2007, 2008, 2009 |
| Download File |
|
| Document Type | Operator's Manual |
| Language | English |
| Product Brand | Husqvarna, Chainsaw |
| Document File Type | |
| Publisher | husqvarna.com |
| Wikipedia's Page | Husqvarna |
| Copyright | Attribution Non-commercial |
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