Adjusting The Self-Propel Drive; Replacing The Blade - Toro 20373 Operator's Manual

6. After draining out the used oil, return the machine to
the operating position.
7. Pour about 3/4 of the crankcase capacity of oil in the
crankcase.
Note: Max. fill: 0.59 L (20 oz), type: SAE 30 or SAE
10W-30 detergent oil with an API service classification
of SF, SG, SH, SJ, SL, or higher.
8. Wait about 3 minutes for the oil to settle in the
crankcase.
9. Wipe the dipstick clean with a clean cloth.
10. Insert the dipstick into the oil-fill tube but do not
screw it in, then remove the dipstick.
11. Read the oil level on the dipstick
•
If the oil level on the dipstick is too low, slowly
pour a small amount of oil into the oil-fill tube,
wait 3 minutes, and repeat steps
the oil level on the dipstick is at the correct level.
•
If the oil level on the dipstick is too high, drain the
excess oil until the oil level on the dipstick is at the
correct level.
Important: If the oil level in the crankcase is too
low or too high and you run the engine, you may
damage the engine.
12. Install the dipstick securely.
13. Recycle the used oil properly.

Adjusting the Self-Propel Drive

Whenever you install a new self-propel cable or if the
self-propel drive is out of adjustment, adjust the self-propel
drive.
1. Turn the adjustment knob counterclockwise to loosen
the cable adjustment
g027709
1. Handle (left side)
2. Adjustment knob
2. Adjust the tension on the cable
back or pushing it forward and holding that position.
(Figure 28).
9 through
(Figure 30).
Figure 30
3. Self-propel-drive cable
(Figure 30) by pulling it
Note: Push the cable toward the engine to increase
the traction; pull the cable away from the engine to
decrease the traction.
3. Turn the adjustment knob clockwise to tighten the
cable adjustment.
Note: Tighten the knob firmly by hand.

Replacing the Blade

Service Interval: Yearly—Replace the blade or have it
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.
11 until
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 and balanced,
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
2. Tip the machine onto its side with the air filter up.
3. Remove the 2 blade nuts and the stiffener
1. Blade nuts
4. Remove the blade
5. Install the new blade
6. Install the stiffener you previously removed.
7. Install the blade nuts and torque them to 20 to 37
N-m (15 to 27 ft-lb).
18
sharpened (more frequently if the edge
dulls quickly).
Preparing for Maintenance (page
Figure 31
2. Stiffener
(Figure 31).
(Figure 31).
16).
(Figure 31).