Engine Maintenance; Servicing The Air Cleaner; Servicing The Engine Oil - Toro 74538 Operator's Manual

Engine Maintenance

Servicing the Air Cleaner

Service Interval/Specification
Inspect the foam and paper elements and replace them
if they are damaged or excessively dirty.
Note: Service the air cleaner more frequently (every
few operating hours) if the operating conditions are
extremely dusty or sandy.
Important: Do not oil the foam or paper element.
Removing the Foam and Paper
Elements
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Clean around the air cleaner to prevent dirt
from getting into the engine and causing damage
(Figure 42).
4. Unscrew the cover knobs and remove the air cleaner
cover (Figure 42).
5. Unscrew the hose clamp and remove the air cleaner
assembly (Figure 42).
6. Carefully pull the foam element off the paper
element (Figure 42).
Figure 42
FS Model Engine Shown
1. Cover
2. Hose clamp
3. Paper element
4. Foam element
Cleaning the Foam Air Cleaner Element
Service Interval: Every 25 hours
1. Wash the foam element in liquid soap and warm
water. When the element is clean, rinse it thoroughly.
2. Dry the element by squeezing it in a clean cloth.
Important: Replace the foam element if it is
torn or worn.
Servicing the Paper Air Cleaner
Element
Service Interval: Every 50 hours—Check the paper air
cleaner element.
Every 200 hours—Replace the paper
air cleaner element.
1. Do not clean the paper filter, replace it (Figure 42).
2. Inspect the element for tears, an oily film, or damage
to the rubber seal.
3. Replace the paper element if it is damaged.
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.
1. Carefully slide the foam element onto the paper air
cleaner element (Figure 42).
2. Place the air cleaner assembly onto the air cleaner
base or hose and secure it (Figure 42).
3. Place the air cleaner cover into position and tighten
the cover knob (Figure 42).

Servicing the Engine Oil

Service Interval: Before each use or daily—Check the
engine oil level.
After the first 8 hours—Change the
engine oil.
Every 100 hours—Change the engine
oil. (more often in dirty or dusty
conditions)
Every 200 hours—Change the engine
oil filter.
Note: Change the oil more frequently when the
operating conditions are extremely dusty or sandy.
Note: There are different oil capacities for the different
models listed in this manual. Ensure the correct amount
of oil is used.
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