Cooling System Maintenance; Cleaning The Air Intake Screen; Cleaning The Cooling System; Brake Maintenance - Toro 74412 Operator's Manual

Figure 44
1. Spring Washers
2. Lock Nut
Cooling System
Maintenance
Cleaning the Air Intake
Screen
Before each use remove any build-up of grass, dirt
or other debris from the cylinder and cylinder head
cooling fins, air intake screen on flywheel end, and
carburetor-governor levers and linkage. This will
help insure adequate cooling and correct engine
speed and will reduce the possibility of overheating
and mechanical damage to the engine.

Cleaning the Cooling System

Clean the air intake screen from grass and debris
before each use.
Check and clean cooling fins and engine shrouds
every 100 hours or yearly, which ever comes first.
1. Disengage the PTO and set the parking brake.
2. Stop the engine, remove the key, and wait for
all moving parts to stop before leaving the
operating position.
3. Dust Cap
3. Remove the air intake screen, recoil starter and
fan housing (Figure 45).
4. Clean the debris and grass from the engine
parts.
5. Install air intake screen, recoil starter and fan
housing (Figure 45).
Figure 45
1. Air intake screen
2. Fan housing
3. Recoil starter

Brake Maintenance

Adjusting the Parking Brake

Check the parking brake for proper adjustment.
1. Check tire pressure of all 4 tires. Refer to
Checking the Tire Pressure.
2. Disengage the brake lever (lever down).
3. Measure the distance vertically between the
front of the brake bar and the crown of the
tire; the measurement should be 7/8 inch to 1
inch (22 to 25 mm) (Figure 46).
4. If the measurement is not correct, proceed to
the following steps.
5. Remove the hairpin and cotter pin from the
brake linkage (Figure 47).
36
4. Bolt
5. Nut