Changing The Oil Filter - Toro 74179 Operator's Manual

4. Slide the oil dipstick fully into the filler tube. Do not
thread it onto the tube (Fig. 34). Pull the dipstick out
and look at the end. If the 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
Figure 34
1. Oil dipstick
2. Filler tube
Changing the Oil
1. Start the engine and let it run for five minutes. This
warms the oil so that it drains better.
2. Park the machine so that the drain side is slightly lower
than the opposite side to ensure that the oil drains
completely. Disengage the power take off (PTO), set the
parking brake, stop the engine, and remove the key.
3. Place a pan below the oil drain. Use either a flat screw
driver, 3/8 in. wrench, or 10 mm wrench to open the
valve (Fig. 35).
4. Rotate the valve end clockwise to close the valve.
Rotate the valve end counterclockwise to open the valve
(Fig. 35).
5. When the oil has drained completely, close the drain
valve (Fig. 35).
Note: Dispose of the used oil at a certified recycling center.
3
m–4368
3. Dipstick end
31
1
Figure 35
1. Oil drain valve
6. Slowly pour approximately 80% of the specified oil, on
page 30, into the filler cap (Fig. 34). Now check the oil
level; refer to Checking Oil Level, page 30. Slowly add
additional oil to bring it to the full mark.

Changing the Oil Filter

Replace the oil filter every 200 hours or every other oil
change.
Note: Change the oil filter more frequently when operating
conditions are extremely dusty or sandy.
1. Drain the oil from the engine; refer to Changing the Oil,
page 31.
2. Remove the old filter (Fig. 36).
3. Apply a thin coat of new oil to the rubber gasket on the
replacement filter (Fig. 36).
1
Figure 36
1. Oil filter
4. Install the replacement oil filter to the adapter. Turn the
oil filter clockwise until the rubber gasket contacts the
filter adapter; then tighten the filter an additional 3/4
turn (Fig. 36).
5. Fill the crankcase with the proper type of new oil; refer
to Servicing the Engine Oil, page 30.
m–5625
2
m–4288
2. Adapter