Engine Oil - Toro 74178 Operator's Manual

With 52" sfs side discharge mower
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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 (Fig. 22).
2. Place the air cleaner assembly onto the air cleaner base
(Fig. 22).
3. Install the air cleaner cover and secure with cover nut
(Fig. 22).

Engine Oil

Change oil:
After the first 5 operating hours.
After every 100 operating hours.
Note: Change oil more frequently when operating
conditions are extremely dusty or sandy.
Oil Type: Detergent oil (API service SG or SH)
Crankcase Capacity: w/filter, 2.1 qt. (2 l)
Viscosity: See table below
USE THESE SAE VISCOSITY OILS
10W–30, 10W–40
5W–20, 5W–30
–20
0
20
40
32
F
–30
–20
–10
0
C
Checking Oil Level
1. Park the machine on a level surface, disengage the
power take off (PTO) and turn the ignition key to
"OFF" to stop the engine. Remove the key.
2. Clean around the oil dipstick (Fig. 25) so dirt cannot
fall into the filler hole and damage the engine.
3. Unscrew the oil dipstick and wipe the metal end clean
(Fig. 25).
60
80
100
10
20
30
40
29
4. Slide the oil dipstick fully into the filler tube, do not
thread onto tube (Fig. 25). Pull the dipstick out and
look at the metal end. If oil level is low, slowly pour
only enough oil into the filler tube to raise the level to
the "FULL" mark.
Important
Do not overfill the crankcase with oil
because the engine may be damaged.
1
2
m–4090
Figure 25
1. Oil dipstick
2. Filler tube
Changing/Draining Oil
1. Start the engine and let it run five minutes. This warms
the oil so it drains better.
2. Park the machine so that the drain side is slightly
lower than the opposite side to assure the oil drains
completely. Then disengage the power take off (PTO),
set the parking brake, and turn the ignition key to
"OFF" to stop the engine. Remove the key.
3. Place a pan below the oil drain. Remove the oil drain
cap (Fig. 26).
4. When oil has drained completely, install the drain cap.
Note: Dispose of the used oil at a certified recycling
center.
3
m–3219
3. Metal end

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