Needle Bearing Lubrication; Adjustment Of The Oil Pump; Cooling System - Husqvarna 543 XP Manuel D'utilisation

These factors cause deposits on the spark plug
electrodes, which may result in operating problems and
starting difculties.
If the machine is low on power, difcult to start or runs
poorly at idle speed: always check the spark plug rst
before taking any further action. If the spark plug is dirty,
clean it and check that the electrode gap is 0.65 mm. The
spark plug should be replaced after about a month in
operation or earlier if necessary.
0,65
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 tted with a suppressor.

Needle bearing lubrication

The clutch drum has a needle bearing on the output shaft.
This needle bearing must be lubricated regularly (once a
week).
When lubricating, remove the clutch cover by loosening
the two bar nuts. Lay the saw on its side with the clutch
drum upwards.
Lubrication involves grease being squirted into the centre
of the crankshaft using a grease gun.

Adjustment of the oil pump

The oil pump is adjustable. Adjustments are made by
turning the screw using a screwdriver. The machine is
supplied from the factory with the screw set to middle
position. Turning the screw clockwise will reduce the oil
MAINTENANCE
ow and turning the screw anti-clockwise will increase the
oil ow.
Recommended settings:
Bar 13"-15": Minimum ow
Bar 15"-16": Medium ow
Bar - 18": Maximum ow
!

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 Air guide plate.
3 Fins on the ywheel.
4 Cooling ns on the cylinder.
5 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.
WARNING! The engine must not be
running when making adjustments.
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English 35