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34 – English
MAINTENANCE
that the electrode gap is 0.5 mm. The spark plug should be
replaced after about a month in operation or earlier if
necessary.
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.
Lubricating the bar tip sprocket
Lubricate the bar tip sprocket each time you refuel. Use the
special grease gun and a good quality bearing grease.
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 engine oil dripping into the centre of the
clutch drum as it rotates.
Adjustment of the oil pump
Adjustments are made by turning the screw using a
screwdriver or combination spanner. The machine is supplied
from the factory with the screw set to position 2. Turning the
screw clockwise will reduce the oil flow and turning the screw
anti-clockwise will increase the oil flow.
Recommended settings:
These recommendations apply to Husqvarna’s chain oil, for
other chain oils increase the oil flow by one step.
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 flywheel.
4 Cooling fins 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.
Bar 13"-15": Position 1
Bar 15"-18": Position 2
Bar 18"-20": Position 3
!
WARNING! The engine must not be running
when making adjustments.
34


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Others manual(s) of Husqvarna 455 Rancher

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Husqvarna 455 Rancher User Manual - German - 84 pages

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