Changing The Engine Oil; Replacing The Blade - Toro 20837 Operator's Manual

4. If the paper air filter is damaged or is wet with oil or
fuel, replace it.
5. 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. Do not wipe dirt into the air duct.
7. Insert the filter into the air cleaner.
8. Install the cover.

Changing the Engine Oil

Service Interval: After the first 5 hours
Yearly
1. Move the machine to a level surface.
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 spark-plug wire from the spark plug;
refer to Preparing for Maintenance (page 12).
4. Tip the machine onto its side, with the dipstick down,
to drain the used oil out through the oil-fill tube into
an oil drain pan (Figure 23).
5. After draining the used oil, return the machine to the
operating position.
6. Pour about 3/4 of the crankcase capacity of oil into
the oil-fill tube.
Note: Max. fill: (0.55 l) 0.58 quart, type: SAE 30
detergent oil with an API service classification of SF,
SG, SH, SJ, SL, or higher.
7. Wipe off the dipstick end with a clean cloth.
8. Insert the dipstick into the oil-fill tube, but do not
screw it in.
9. Remove the dipstick and read the oil level on the
dipstick (Figure 24).
Figure 23
•
If the oil level is too low, add a small amount
of oil slowly to the oil-fill tube, and then repeat
steps through 9 until the oil level on the dipstick is
correct.
•
If the oil level is too high, drain the excess
oil until the oil level on the dipstick is
correct. To drain the excess oil, refer to
Changing the Engine Oil (page 13).
Important: If the oil level in the crankcase is
too low or too high and you run the engine,
you may damage the engine.
10. Install the dipstick securely.

Replacing the Blade

Service Interval: Yearly
Important: You will need a torque wrench to install the
blade properly . If you do not have a torque wrench or
are uncomfortable performing this procedure, contact
an Authorized Service Dealer.
Examine the blade whenever you run out of gasoline. If the
blade is damaged or cracked, replace it immediately. If the
blade edge is dull or nicked, have it sharpened or replace it.
WARNING
The blade is sharp; contacting the blade can result
in serious personal injury.
Wear gloves when servicing the blade.
1. Disconnect the spark-plug wire from the spark plug;
refer to Preparing for Maintenance (page 12).
13
Figure 24