Engine Maintenance; Servicing The Air Cleaner; Servicing The Engine Oil - Toro 74920 Operator's Manual

Engine Maintenance

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.

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 (PTO).
2. Move the motion control levers to the neutral lock
position, set the parking brake, 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.
Lift the cover and remove the hose clamp securing
the air cleaner assembly to the engine (Figure 42).
4. Loosen the hose clamp and remove the paper
element (Figure 42).
3
G015155
Figure 42
1. Cover
2. Paper element
2
1
3. Hose clamp
Cleaning the 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.
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.

Servicing the Engine Oil

Oil Type: Detergent oil (API service SF, SG, SH, SJ,
or SL)
Crankcase Capacity: 61 ounces (1.8 l), [when oil filter
is removed: 70 ounces (2.1 l)]
Viscosity: See the table below.
SAE V iscosity Grades
SAE 5W 20
-20 0 20
°F
°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 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.
37
SAE 40
SAE 30
SAE 10W30/ SAE 10W30
32 40 60 80 100
0 10 20 30 40
Figure 43
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