Servicing The Engine Oil - Toro 74923 Operator's Manual

Figure 47
1. Air-cleaner clamps
2. Air-cleaner cover
Servicing the Primary Filter
1. Do not clean the paper filter, replace it
47).
2. Inspect the element for tears, an oily film, or
damage to the rubber seal.
3. Replace the paper element if it is damaged.
Servicing the Secondary Filter
Do not clean the secondary filter, replace it.
Important:
Do not attempt to clean the secondary
filter. If the secondary filter is dirty, then the
primary filter is damaged and you should replace
both filters.
Installing the Filters
Important:
To prevent engine damage, always
operate the engine with both air filters and the
cover installed.
1. If installing new filters, check each filter for
shipping damage.
Note:
Do not use a damaged filter.
2. If the secondary filter is being replaced, carefully
slide it into the filter body
3. Carefully slide the primary filter over the
secondary filter (Figure
4. Ensure that it is fully seated by pushing on the
outer rim of the filter while installing it.
Important:
Do not press on the soft inside
area of the filter.
5. Install the air-cleaner cover with the breather cap
down, and rotate so that the retaining clamps
lock the cover in place
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3. Primary air filter
4. Secondary air filter
(Figure
(Figure 47).
47).
(Figure 47).

Servicing the Engine Oil

Oil Type: Detergent oil (API service SG, SH, SJ, or
higher)
Oil Capacity for Models 74923, 74925, and 74927
engines: with a filter change, 2.3 L (77 oz); with no
filter change, 2.1 L (70 oz)
Oil Capacity for Models 74922, 78922, and 78924
engines: with a filter change, 2.1 L (71 oz); with no
filter change, 1.8 L (61 oz)
Viscosity: See the table below.
Note:
Use of multi-grade oils (5W-20, 10W-30, or
10W-40) 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 your hands, feet, face, clothing, and
other body parts away from the muffler and
other hot surfaces.
Important:
Do not overfill the crankcase with oil
because damage to the engine may result. Do not
run engine with oil below the Low mark because
the engine may be damaged.
1. Disengage the blade-control switch (PTO), move
the motion-control levers to the N
position, and engage the parking brake.
39
Figure 48
EUTRAL
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