Engine Maintenance; Servicing The Air Cleaner; Servicing The Engine Oil - Toro 74722 Operator's Manual

Engine Maintenance

Servicing the Air Cleaner

Note: Service the air cleaner more frequently (every few
hours) if operating conditions are extremely dusty or sandy.
Removing the Element
1. Park the machine on a level surface and disengage the
blade-control switch (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. Clean around the air-cleaner cover to prevent dirt from
getting into the engine and causing damage.
4. Lift the cover and remove the hose clamp securing the
air-cleaner assembly to the engine
5. Loosen the hose clamp and remove the paper element
(Figure 28).
2
3
Figure 28
1. Cover
2. Paper element
Cleaning the Paper Element
Service Interval: Every 100 hours—Service the paper
element (more often in dusty, dirty
conditions).
Every 200 hours/Yearly (whichever comes
first)—Replace the paper element (more often in
dusty, dirty conditions).
1. Lightly tap the element on a flat surface to remove dust
and dirt.
2. Inspect the element for tears, an oily film, and damage
to the seal.
(Figure 28).
1
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3. Hose clamp
Important: Do not 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.

Servicing the Engine Oil

Oil Type: Detergent oil (API service SJ or higher)
Crankcase Capacity
Model Oil filter not removed
74722 1.5 L (51 oz)
74730
1.8 L (61 oz)
Viscosity: See the table below.
SAE V iscosity Grades
SAE 5W 20
°F -20 0 20
°C
-30 -20 -10
STARTING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
Note: Using multi-grade oils (5W-20, 10W-30, and 10W
-40) will increase oil consumption. Check the oil level more
frequently when using them.
Checking the Engine-Oil Level
Service Interval: Before each use or daily
Note: Check the oil when the engine is cold.
WARNING
Contact with hot surfaces may cause personal
injury.
Keep hands, feet, face, clothing and other body
parts away the muffler and other hot surfaces.
Important: Do not overfill the crankcase with oil and
run the engine; engine damage may result.
1. Park the machine on a level surface.
2. Disengage the blade-control switch (PTO).
3. Stop the engine, wait for all moving parts to stop, and
remove the key before leaving the operating position.
4. Check the engine-oil level
30
Oil filter removed
1.7 L (58 oz)
2.1 L (71 oz)
SAE 40
SAE 30
SAE 10W30/ SAE 10W40
32 40 60 80 100
0 10 20 30 40
Figure 29
(Figure 30).
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