Maintenance
26
Cleaning the Cooling Systems
Before each use, check and clean engine cooling
systems. Remove any build–up of grass, dirt or other
debris from the engine air intake. Every 100 hours
clean hydrostatic pump fans and cooling fins, engine
cylinder and cylinder head cooling fins. Also clean
around carburetor, governor levers and linkage. This
will help insure adequate cooling to hydrostatic
pumps and engine and will reduce the possibility of
overheating and mechanical damage.
1.
Clean off engine air intake (Fig. 22).
2.
Blow out fins of engine and hydrostatic pumps
with compressed air. If area between screen and
fins is tightly packed, remove engine shroud.
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m–3081
1
Figure 22
1.
Engine air intake
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. 23). Check the tires when they are cold to get
the most accurate pressure reading.
Pressure: 8 psi (57 kPa) rear and 12 psi (81 kPa)
castor tires.
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m–1872
Figure 23
1.
Valve stem
