Toro TimeCutter ZD420T, Operator'S Manual

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Engine Maintenance
Servicing the Air Cleaner
Service Interval: Every 25 hours—Service the foam air
cleaner. (more often in dusty, dirty
conditions)
Every 50 hours—Service the paper
air cleaner. (more often in dusty, dirty
conditions)
Every 200 hours—Replace the paper
air cleaner. (more often in dusty, dirty
conditions)
Note:
Service the air cleaner more frequently (every
few hours) if operating conditions are extremely dusty
or sandy.
Removing the Foam and Paper
Elements
1. Park the machine on a level surface and disengage
the blade control (PTO).
2. Move the motion control levers to the brake position,
stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Remove the engine hood and engine duct to access
the engine components.
4. Clean around the air cleaner to prevent dirt from
getting into the engine and causing damage. Unlatch
the two side latches and remove the air cleaner cover
(Figure 32).
5. Carefully remove the foam element from the paper
element (Figure 32).
6. Unscrew the wing nut and remove the paper element
(Figure 32).
Figure 32
1. Cover 4. Wing nut
2. Foam element 5. Air cleaner base
3. Paper element 6. Latches
Cleaning the Foam and Paper Elements
1. Foam Element
A. Wash the foam element in liquid soap and
warm water. When the element is clean, rinse
it thoroughly.
B. Dry the element by squeezing it in a clean cloth
(do not wring). Allow the element to air dry.
C. Soak the element in new engine oil. (Figure 33).
Squeeze the element to remove excess oil.
Important:
Replace the foam element if it
is torn or worn.
Figure 33
1. Foam element 2. Oil
2. Paper Element
A. Lightly tap the element on a flat surface to
remove dust and dirt (Figure 34).
B. Inspect the element for tears, an oily film, and
damage to the rubber seal.
Important:
Never clean the paper element
with pressurized air or liquids, such as
solvent, gas, or kerosene. Replace the paper
element if it is damaged or cannot be cleaned
thoroughly.
Figure 34
1. Paper element 2. Rubber seal
Installing the Foam and Paper Elements
Important:
To prevent engine damage, always
operate the engine with the complete foam and
paper air cleaner assembly installed.
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