Hydraulics - Husqvarna 250 PS Workshop Manual

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Hydraulic oil
38

9. Hydraulics

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Fuel
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WARNING! Whenever you handle hydraulic
components take care to ensure that no dirt enters
the system. Dirt will cause operating problems in
the hydraulic system.
Recommended hydraulic oil
Hydraulic oil such as ISO grade Shell Tellus T32 is
recommended if the air temp. is below +20°C.
Hydraulic oil such as ISO grade Shell Tellus T45 is
recommended if the air temp. is above +20°C.
If the pruning saw is used in winter and/or in temperatu-
res below -10°C then a lower viscosity oil should be
used. Contact your hydraulic oil supplier.
The saw can also be used with a vegetable based or
synthetic hydraulic oil of an equivalent grade.
NOTE! The flame point of the oil must exceed +160°C.
The oil should also be non-conductive.
Fill with hydraulic oil so that the level is between the min
and max marks on the dipstick.
If the hydraulic tank is new and unused it should be
completely filled so that there is enough oil to fill the
hoses. Top up with hydraulic oil after the machine has
been run for the first 2-3 minutes. Check the level of the
hydraulic oil each time you refuel.
Hydraulic oil tank
Separate the hydraulic oil tank from the engine by
undoing the jubilee clip and pulling the hydraulic tank
away.
Undo the four bolts on the cover of the hydraulic oil tank
and lift off the cover. Empty the oil.