Cleaning Under The Belt Cover; Cleaning The Cooling System; Emptying The Fuel Tank; Folding The Handle - Toro 20833 Operator's Manual

Sharpening the Blade
File the top side of the blade to maintain its original cutting
angle (Fig. 27A) and inner cutting edge radius (Fig. 27B).
The blade will remain balanced if you remove the same
amount of material from both cutting edges.
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153
Figure 27
1. Sharpen at this angle only
Balancing the Blade
1. Check the balance of the blade by placing the center
hole of the blade over a nail or screwdriver shank
clamped horizontally in a vise (Fig. 28).
Figure 28
Note: You can also check the balance using a commercially
manufactured, blade balancer.
2. If either end of the blade rotates downward, file that end
(not the cutting edge or the end near the cutting edge).
The blade is properly balanced when neither end drops.
Installing the Blade
1. Install a sharp, balanced Toro blade, the blade stiffener,
the lock washer, and the blade bolt.
Note: The sail part of the blade must point upward
(toward the top of the housing).
2. Torque the blade bolt to 45 to 60 ft-lb (33 to 44 N m).
3. Turn the lawn mower upright.
4. Connect the wire to the spark plug.

Cleaning under the Belt Cover

Keep the area under the belt cover free of debris.
1. Stop the engine and wait for all moving parts to stop.
2
m-6336
2. Maintain the original
radius here
1007
17
2. Lift off the cover and brush out all the debris from the
belt area.
3. Install the belt cover.

Cleaning the Cooling System

After every 100 operating hours or every season, clean the
dirt and the chaff from the cylinder, the cylinder head fins,
and around the carburetor and the linkage. Remove debris
from the air intake slots on the recoil housing. This will
ensure proper cooling and the best engine performance.

Emptying the Fuel Tank

1. Stop the engine and wait for it to cool.
Important Drain gasoline from a cold engine only.
2. Disconnect the wire from the spark plug (Fig. 10).
3. Remove the cap from the fuel tank (Fig. 8).
4. Use a hand pump to pump the gasoline into a clean
approved gasoline container.
5. Connect the wire to the spark plug.
6. Run the engine until it stops.
7. Start the engine again to ensure that all the gasoline is
out of the carburetor.

Folding the Handle

Warning
Folding or unfolding the handle improperly can
pinch, stretch, or damage one or more of the
cables. Any pinched, stretched, or damaged cable
may cause an operational failure that results in an
unsafe operating condition.
Do not pinch, stretch, or damage the cables.
Handle the cables with care when folding or
unfolding the handle.
Do not use the lawn mower if one or more of the
cables are pinched, stretched, or damaged.
Contact an Authorized Service Dealer.
1. Loosen the handle height adjustment knobs that secure
the handle to the lawn mower.
2. Loosen the knobs that secure the upper handle section
to the lower handle section.
3. Carefully swing the lower handle section forward until
it rests on the engine (Fig. 29).