Cleaning Under The Blade Brake Clutch (Bbc) Shield; Maintaining The Blade - Toro 20487 Operator's Manual

Cleaning under the Blade
Brake Clutch (BBC) Shield
Clean the blade brake clutch shield every 25 operating
hours or yearly at a minimum to prevent the blade from
stalling while you mow.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Fig. 8).
3. Drain the gasoline from the fuel tank; refer to steps 3
and 4 of Emptying the Fuel Tank on page 23.
4. Tip the lawn mower on its left side.
5. Remove two blade nuts, the anti-scalp cup, the
accelerator, the blade, the blade spacer, and three bolts
and washers that secure the BBC shield to the lawn
mower deck (Fig. 23).
3
2
Figure 23
1. Blade nuts
2. Anti-scalp cup
3. Accelerator
6. Brush or blow out debris from the inside of the shield
and around all the parts.
7. Install the BBC shield with the three bolts and
washers, the blade spacer, the blade, the accelerator,
the anti-scalp cup, and the two blade nuts. Torque the
blade nuts to 15 to 27 ft-lb (20 to 37 N m).
8. Connect wire to the spark plug.

Maintaining the Blade

A straight, sharp blade provides the best cutting
performance. Regularly inspect and sharpen the blade.
1
4
5
757
4. Blade
5. BBC shield
WARNING
POTENTIAL HAZARD
The blade is sharp.
WHAT CAN HAPPEN
Contact with a sharp blade can cause serious
personal injury.
HOW TO AVOID THE HAZARD
Wear gloves or wrap the sharp edges of the
blade with a rag.
1. Stop the engine and wait for all moving parts to stop.
2. Disconnect the wire from the spark plug (Fig. 8).
WARNING
POTENTIAL HAZARD
Gasoline is extremely flammable, highly
explosive and under certain conditions can
cause personal injury or property damage.
WHAT CAN HAPPEN
Tipping the lawn mower may cause fuel leakage
from the carburetor or fuel tank.
HOW TO AVOID THE HAZARD
Avoid fuel spills by running the engine dry or
removing gas with a hand pump; never siphon.
3. Drain the gasoline from the fuel tank; refer to steps 3
and 4 of Emptying the Fuel Tank on page 23.
4. Tip the lawn mower on its left side (Fig. 24).
Inspecting the Blade
Carefully examine the blade for sharpness and wear,
especially where the flat and the curved parts meet
(Fig. 25A). Because sand and abrasive material can wear
away the metal that connects the flat and curved parts of
20
Figure 24