Husqvarna S427 Operator's Manual page 18

Hydraulic Oil System
WARNING! HYDRAULIC FLUID
can result in severe burns. Fluid in
hydraulic system can penetrate skin and
result in serious injury or death.
Be sure to stop the engine and relieve
hydraulic pressure before doing any work
on hydraulic parts.
Keep body and hands away from pin holes
or nozzles which expel hydraulic fluid when
under pressure. Use paper or cardboard,
not hands, to search for leaks.
Ensure all hydraulic fluid connections are
tight and all hydraulic hoses and lines are
in good condition before applying pressure
to system.
FOREIGN FLUID INJECTED INTO BODY
can result in gangrene. Fluid must be
surgically removed within a few hours by a
doctor familiar with this form of injury.
Checking Hydraulic Oil Level
IMPORTANT ADD OIL BEFORE
OPERATING! Add hydraulic oil to operating
level before use. Do not overfill.
To check the hydraulic oil level:
1. Park the unit on a level surface.
2. Start the unit and run it to operating
temperature (about 10 minutes).
3. Cycle the hydraulic cylinder in and out
two or three times.
4. Shut off engine.
5. Remove any dirt that may be around the
cap/breather on the hydraulic reservoir.
6. Remove cap/breather and wipe oil level
dipstick clean.
7. Replace cap/breather and fully tighten.
8. Remove cap/breather and check oil
level on dipstick. Oil should be within
the operating range.
9. Add hydraulic oil as necessary. Do not
overfill.
Recommended Hydraulic Oil
Only use the following hydraulic oils:
• ISO32 hydraulic oil
• Dexron® III/Mercon® automatic
transmission fluid
• AW hydraulic oil 10 weight
• Pro-Mix™ AW-32 Hydraulic Oil
Hydraulic Oil Level
Operating Range
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Hydraulic Oil
Reservoir
Cap/Breather