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Cooling System
Maintenance
Cleaning the Air Intake Screen
Service Interval: Before each use or daily
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
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 fan housing
(Figure 63).
4. Clean the debris and grass from the engine parts.
5. Install air intake screen, recoil starter and fan housing
(Figure 63).
Figure 63
1. Guard and engine air
intake screen
1
2
g015409
2. Fan housing
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
1. Park the machine on a level surface, 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 brake. The brake bars should lift off
the tires and the hand lever should travel forward to
the end of the slot in the control panel. Adjust the
brake if needed.
4. Engage the brake lever until the brake bars first
contact the tire (Figure 64).
5. Measure the gap from the front of the hand lever
to the end of the slot in the control panel when the
brake bar contacts the tire. This measurement needs
to be 3/4 inch (19 mm). Adjust the brake if needed
(Figure 64).
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