Figure 70
1. Cooling fan belt 2. Tensioner lever
2. Apply 5 to 10 lb (2.25 to 4.5 kg) of force at
end of lev er to set the proper tension on the
fan belt.
3. Tighten the loc kn ut to secure the adjustment.
Hydraulic System
Maintenance
Changing the Hydraulic
Fluid
Chang e h y draulic fluid after ev er y 800 operating
hours , in nor mal conditions . If fluid becomes
contaminated, contact y our local T oro distributor
because the system m ust be flushed. Contaminated
fluid looks milk y or blac k when compared to clean
oil.
1. Stop the engine and raise the hood.
2. Place a larg e drain pan under the drain plug
under the h y draulic fluid reser v oir ( Figure 71 ).
Figure 71
1. Hydraulic uid reservoir
R emo v e the drain plug from the bottom of the
h y draulic fluid reser v oir ( Figure 71 ) and let the
h y draulic fluid flo w into the drain pan.
3. Install and tighten the plug when h y draulic
fluid stops draining .
4. Fill the reser v oir with appro ximately 8.5
U .S . g allons (32 l) of h y draulic fluid; refer to
Chec king the Hy draulic Fluid in Operation ,
pag e 26 .
Important: Use onl y h y draulic fluids
specified. Other fluids could cause system
dama ge.
5. Install the reser v oir cap .
6. Star t the engine and use all of the h y draulic
controls to distribute h y draulic fluid
throughout the system. Also c hec k for leaks .
7. Stop the engine .
8. Chec k the lev el of the h y draulic fluid and add
enough to raise lev el to the Full mark on the
dipstic k.
Important: Do not o v er -fill.
Replacing the Hydraulic
Filter
T he h y draulic system filter head is equipped with a
ser vice inter v al indicator . With the engine r unning,
view the indicator , it should be in the Green zone .
W hen the indicator is in the R ed zone , the c hang e
the h y draulic filter .
Use the T oro re placement filter (P ar t No .
75-1310).
Important: Use of an y other filter may v oid
the w ar ranty on some components.
54
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