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Hydraulic System
Maintenance
Checking the Hydraulic Fluid
Level
Service Interval: Before each use or daily
The machines reservoir is filled at the factory with
approximately 56.7 L (15 US gallons) of high quality hydraulic
fluid. The recommended replacement fluid is as follows:
Toro Premium All Season Hydraulic Fluid (Available in
18.9 L (5 US gallon) pails or 208 L (55 US gallon) drums.
See the Parts Catalog or your 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: Use products only from reputable manufactures. Toro
does not take responsibility for damage caused by improper
substitutions.
High Viscosity Index/Low Pour Point Anti-wear Hydraulic
Fluid, ISO VG 46
Material Properties:
Viscosity, ASTM D445
Viscosity Index ASTM
D2270
Pour Point, ASTM D97
Industry Specifications:
Vickers I-286-S (Quality Level), Vickers M-2950-S
(Quality Level), Denison HF-0
Important: The ISO VG 46 Multigrade fluid has been
found to offer optimal performance in a wide-range of
temperature conditions. For operation in consistently
high ambient temperatures, 18°C (65°F) to 49°C
(120°F), ISO VG 68 hydraulic fluid may offer improved
performance.
Premium Biodegradable Hydraulic Fluid-Mobil EAL
EnviroSyn 46H
Important: Mobil EAL EnviroSyn 46H is the only
synthetic biodegradable fluid approved by Toro. This
fluid is compatible with the elastomers used in Toro
hydraulic systems and is suitable for a wide-range
of temperature conditions. This fluid is compatible
with conventional mineral oils, but for maximum
biodegradability and performance the hydraulic system
should be thoroughly flushed of conventional fluid. The
cSt @ 40°C 44 to 48cSt
@ 100°C 7.9 to 8.5
140 to 160
-34°F to -49°F
oil is available in 19 L (5 US gallons) containers or 208 L
(55 US gallons) drums from your Mobil Distributor.
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 20 ml (2/3 oz) bottles. 1 bottle is
sufficient for 15 to 23 L (4 to 6 US gallons) of hydraulic oil.
Order Part Number 44-2500 from your Toro Distributor.
1. Position the machine on a level surface, lower the
cutting decks, and turn the key in the ignition switch
to the O
position.
FF
2. Check the hydraulic-fluid level
47
(Figure
57).
Figure 57
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