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Figure 46
Cleaning the Cooling Systems
Cleaning the Engine Screen and the Oil
Cooler
Before each use, check and clean engine screen and oil
cooler. Remove any build–up of grass, dirt or other debris
from the oil cooler screen and engine screen (Figures 47
and 48).
1
Figure 47
1. Oil cooler
Cleaning the Engine Fins
Every 100 hours clean engine cylinder and cylinder head
cooling fins. Also clean around carburetor, governor
levers and linkage. This will make sure adequate cooling
to hydraulic pumps, motors and engine and will reduce the
possibility of overheating and mechanical damage.
1. Remove the engine shroud.
2. Clean the engine cooling fins.
3. Install the engine shroud.
1
1. Engine shroud
M–5036
Servicing the Spark Arrester
Inspect the spark arrester every 50 hours for damage, such
as holes in the screen, and for buildup on the screen. If it
is damaged, replace it with a new spark arrester. If it is
dirty, remove it and clean the screen with a wire brush
and/or soak it in solvent.
Checking the Tire Pressure
Maintain the air pressure in the front and rear tires as
specified. Uneven tire pressure can cause uneven cut.
Check the pressure at the valve stem after every 50
operating hours or monthly, whichever occurs first
(Fig. 49). Check the tires when they are cold to get the
most accurate pressure reading.
Pressure: 13 psi (90 kPa) drive wheels and caster wheels.
m–5800
Checking the Wheel Hub
Slotted Nut
Check after every 500 operating hours.
The slotted nut needs to be torqued to 125 ft.–lb.
(169 N m).
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove cotter pin.
36
2
Figure 48
2. Engine screen
1
Figure 49
1. Valve stem
m–5806
m–1872
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