Replacing The Air Cleaner; Changing The Engine Oil - Toro 20373 Operator's Manual

Replacing the Air Cleaner

Service Interval: Yearly
1. Press down on the latch tabs on top of the air cleaner
cover (Figure 24).
1. Latch tabs
2. Paper air filter
2. Open the cover.
3. Remove the paper air filter and the foam pre-filter
(Figure 24).
4. Inspect the foam pre-filter, and replace it if it is
damaged or excessively dirty.
5. Inspect the paper air filter.
A. If the paper air filter is damaged or is wet with oil
or fuel, replace it.
B. If the paper air filter is dirty, tap it on a hard
surface several times or blow compressed air less
than 30 psi (207 kPa) through the side of the
filter that faces the engine.
Note: Do not brush the dirt off the filter;
brushing forces dirt into the fibers.
6. Remove dirt from the air cleaner body and cover
using a moist rag (to trap the dirt and keep it from
falling into the engine). Do not wipe dirt into the
air duct.
7. Insert the foam pre-filter and the paper air filter into
the air cleaner.
8. Install the cover.
Figure 24
3. Foam pre-filter

Changing the Engine Oil

Service Interval: After the first 5 hours
Yearly
1. Ensure that the fuel tank contains little or no fuel so
that fuel does not leak out when you tip the mower
onto its side.
2. Run the engine a few minutes before changing the
oil to warm it.
Note: Warm oil flows better and carries more
contaminants.
3. Disconnect the wire from the spark plug. Refer to
Preparing for Maintenance.
4. Remove the dipstick.
5. Tip the mower onto its side, with the dipstick down,
to drain the used oil out through the oil fill tube
(Figure 25).
6. Return the mower to the operating position.
7. Slowly pour oil into the oil fill hole, wait a few
minutes, and check the oil level on the dipstick by
wiping the dipstick clean and then inserting, but not
screwing in, the oil fill cap into the hole.
Note: Max. fill: 20 oz. (0.59 l), type: SAE 30
or SAE 10W-30 detergent oil with an API service
classification of SF, SG, SH, SJ, SL, or higher.
Note: Fill the engine crankcase with oil until the
dipstick indicates that the engine oil level is correct
as shown in (Figure 26). If you overfill the engine
with oil, remove the excess oil as directed in 5.
16
Figure 25