13
Checking the Hydraulic System
The machines reservoir is filled at the factory with
approximately 3 U.S. gallons (11.4 l) of high quality
hydraulic fluid. Check the level of the hydraulic fluid
before the engine is first started and daily thereafter.
The recommended replacement fluid is:
Toro Premium All Season Hydraulic Fluid
(Available in 5 gallon pails or 55 gallon drums. See
parts catalog or Toro distributor for part numbers.)
Alternate fluids: If the Toro fluid is not available, other
fluids may be used provided they meet all the following
material properties and industry specifications. We do not
recommend the use of synthetic fluid. Consult with your
lubricant distributor to identify a satisfactory product
Note: Toro will not assume responsibility for damage
caused by improper substitutions, so use only products
from reputable manufacturers who will stand behind their
recommendation.
High Viscosity Index/Low Pour Point Antiwear
Hydraulic Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445 cSt @ 40_C 44 to 48
cSt @ 100_C 9.1 to 9.8
Viscosity Index ASTM D2270 140 to 160
Pour Point, ASTM D97 –34_F to –49_F
Industry Specifications:
Vickers I–286–S (Quality Level), Vickers M–2950–S
(Quality Level), Denison HF–0
Note: Many hydraulic fluids are almost colorless, making it
difficult to spot leaks. A red dye additive for the hydraulic
system oil is available in 2/3 oz. (20 ml) bottles. One bottle
is sufficient for 4–6 gal (15–22 1) of hydraulic oil. Order
part no. 44–2500 from your authorized Toro distributor.
Biodegradable Hydraulic Fluid – Mobil 224H
Toro Biodegradable Hydraulic Fluid
(Available in 5 gallon pails or 55 gallon drums. See
parts catalog or Toro distributor for part numbers.)
Alternate fluid: Mobil EAL 224H
This is vegetable–oil based biodegradable oil tested and
approved by Toro for this model. This fluid is not as
resistant to high temperatures as standard fluid, so install an
oil cooler if required by the operator manual and follow
recommended fluid change intervals with this fluid.
Contamination by mineral–based hydraulic fluids will
change the biodegradability and toxicity of this oil. When
changing from standard fluid to the biodegradable type, be
certain to follow the approved flushing procedure. Contact
your local Toro Distributor for details.
1. Clean the area around the hydraulic oil reservoir cap to
prevent debris from entering the tank (Fig. 6).
2. Remove the cap from the hydraulic oil reservoir
(Fig. 6).
1
Figure 6
1. Oil reservoir cap
3. Check the oil level in the reservoir. The oil level should
be up to the top of the cone point on the tank screen.
4. If the fluid level is low, slowly fill the reservoir with the
appropriate hydraulic fluid until the level reaches the
bottom of the screen. Do not overfill.
5. Install the reservoir cap.
Important To prevent system contamination, clean the
top of the hydraulic oil containers before puncturing.
Ensure that the pour spout and funnel are clean.
Checking the Tire Pressure
Check the tire pressure before operating the machine. The
correct air pressure in the front and rear tires is 4–6 psi
(28–41 kPa).
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