Cooling System Maintenance; Cleaning The Air-Intake Screen; Cleaning The Cooling System; Brake Maintenance - Toro 74534 Operator's Manual

Cooling System
Maintenance

Cleaning the Air-Intake Screen

Service Interval: Before each use or daily
Before each use, remove any buildup of grass, dirt, or
other debris from the cylinder and cylinder head cooling
fins, air intake screen on the flywheel end, and the
carburetor-governor levers and linkage. This will help ensure
adequate cooling and correct engine speed, and will reduce
the possibility of overheating or mechanical damage to the
engine.

Cleaning the Cooling System

Service Interval: Every 100 hours—Check and clean engine
cooling fins and shrouds.
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. Remove the air-intake screen and the fan housing
(Figure 60).
4. Clean the debris and grass from the engine parts.
5. Install the air-intake screen and fan housing
Figure 60
1. Guard
2. Engine air-intake screen
3. Bolt
(Figure
1
2
3
4
5
g017626
4. Fan housing
5. Screw

Brake Maintenance

Servicing the Brake

Before each use, check brakes on both a level surface and
slope.
Always set the parking brake when you stop the machine
or leave it unattended. If the parking brake does not hold
securely, an adjustment is required.
Checking the Parking Brake
Service Interval: Before each use or daily
Important: Ensure that the mower is on a level surface
when checking and adjusting the brake.
1. Park the machine on a level surface and disengage the
PTO.
2. Stop the engine, remove the key, and wait for all moving
parts to stop before leaving the operating position.
3. Release the parking brake; refer to
Parking Brake (page
4. Check the tire pressure; refer to
Pressure (page
5. With the brake released, measure the distance between
the brake bar and the tire on each side.
6. Using the side with the smallest clearance, ensure that
the distance is between 3 and 6 mm (1/8 and 1/4
60).
inches) as shown in
Brakes (page 44)
1. Tire
2. Brake bar
43
Releasing the
16).
Checking the Tire
41).
Figure 61); refer to
when adjustment is needed.
G021 180
Figure 61
3. Clearance between 3 and
6 mm (1/8 and 1/4 inches)
4. Measure smallest
clearance between bar
and tire
Adjusting the