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Checking the Wheel-Lug Nuts
Service Interval: After the first 100 hours—Check the
wheel-lug nuts.
Check and torque the wheel lug nuts to 115 to 142 N∙m (85
to 105 ft-lb).
Checking the Wheel-Hub Nuts
Service Interval: After the first 100 hours—Check the
wheel-hub nuts.
Every 500 hours—Check the wheel-hub nuts.
Check and torque the wheel hub nuts to 286 to 352 N∙m (211
to 260 ft-lb).
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 helps ensure that
adequate cooling and correct engine speed, and reduces the
possibility of overheating or mechanical damage to the engine.
Cleaning the Cooling System
Service Interval: Every 100 hours—Check and clean the
engine cooling fins and shrouds.
1. Disengage the PTO and set the parking brake.
2. Shut off 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
64).
4. Clean the debris and grass from the engine parts.
5. Install the air-intake screen and the fan housing
64).
1. Guard and engine
air-intake screen
2. Fan housing
43
Figure 64
3. Engine-oil cooler
(Figure
(Figure
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