Cooling System; Spark Plug; Two-Piece Shaft - Husqvarna 129 C Manuel D'utilisation

Cooling system

To keep the working temperature as low as possible the
machine is equipped with a cooling system.
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The cooling system consists of:
1 Air intake on the starter.
2 Cooling fins on the cylinder.
Clean the cooling system with a brush annually, 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 carburetor 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 0.020 inch (0,5
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MAINTENANCE
mm). The spark plug should be replaced after about a
year 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. See technical data.

Two-piece 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.
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