Servicing The Brake - Toro 30528 Operator's Manual

2
Figure 40
1. Spark plug wire
Checking the Spark Plug
1. Look at the center of the spark plug(s) (Fig. 41). If you
see light brown or gray on the insulator, the engine is
operating properly. A black coating on the insulator
usually means the air cleaner is dirty.
Important
Never clean the spark plug(s). Always
replace the spark plug(s) when it has: a black coating, worn
electrodes, an oily film, or cracks.
2. Check the gap between the center and side electrodes
(Fig. 41). Bend the side electrode if the gap is not
correct (Fig. 41).
2
1
Figure 41
1. Center electrode insulator
2. Side electrode
Installing the Spark Plug
1. Install the spark plug(s) and metal washer. Make sure
the air gap is set correctly.
2. Tighten the spark plug(s) to 20 ft-lb (27 N⋅m).
3. Push the wire(s) onto the spark plug(s) (Fig. 40).
1
m–4757
2. Spark plug
3
0.040 inch
(1.02 mm)
3. Air gap (not to scale)
(s)
33

Servicing the Brake

Service Interval/Specification
Before each use, check the parking brake for proper
operation.
Always set the parking brake when you stop the machine or
leave it unattended. If the parking brake does not hold
securely, adjust it.
Checking the Parking Brake
1. Move the machine onto a level surface.
2. Disengage the power take off (PTO) and stop the
engine.
3. Set the parking brake.
Note: Setting the parking brake should take a reasonable
amount of force. If it engages too hard or too easily,
adjustment is required. Refer to Adjusting the Parking
Brake on page 33.
Adjusting the Parking Brake
The parking brake lever is on the right side of the machine
(Fig. 18). If the parking brake does not hold securely, adjust
it.
1. Check the parking brake before you adjust it; refer to
Checking the Parking Brake on page 33.
2. Release the parking brake; refer to Releasing the
Parking Brake, page 20.
3. Remove the hair pin cotter and the clevis pin from the
lower brake lever (Fig. 42).
4. Rotate the brake linkage yoke in to tighten the parking
brake; rotate the brake linkage yoke out out to loosen
the parking brake (Fig. 42).
Note: There should be an approximately 1/4 in. clearance
between the tire and the flat bar when the parking brake in
the released position (Fig. 42).
5. Secure the brake linkage yoke to the lower brake lever
with the hair pin cotter and the clevis pin (Fig. 42).
6. Check the brake operation again; refer to Checking the
Parking Brake on page 33.