Greasing The Bearings; Cleaning The Cooling Systems; Tire Pressure; Wheel Hub Slotted Nut - Toro 74241 Operator's Manual

Greasing the Bearings

The cutting unit must be lubricated daily; refer to the
Recommended Maintenance Schedule on page 29. Grease
with No. 2 general purpose lithium base or molybdenum
base grease.
Important Make sure cutting unit spindles are full of
grease daily.
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Grease the fittings on the three spindle bearings until
grease comes out lower seals (Fig. 33).
3. Grease the fittings on the push arms (Fig. 33).
Figure 33

Cleaning the Cooling Systems

Before each use, check and clean cooling screen. Remove
any build–up of grass, dirt or other debris from the oil
cooler screen and engine air intake. Every 100 hours clean
oil cooler, engine cylinder and cylinder head cooling fins.
Also clean around carburetor, governor levers and linkage.
This will help insure adequate cooling to hydraulic
pumps, motors and engine and will reduce the possibility
of overheating and mechanical damage.
2
Figure 34
1. Engine screen

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. 35). Check the tires when they are cold to get the
most accurate pressure reading.
Pressure: 13 psi (90 kPa) drive wheels and castor wheels.
Figure 35
1. Valve stem

Wheel Hub Slotted Nut

Check after every 500 operating hours.
The slotted nut needs to be torqued to 125 ft-lbs
(169.5 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.
3. Torque slotted nut to 125 ft-lbs (169.5 N m) (Fig. 36).
4. Check the distance from bottom of slot in nut to inside
edge of hole. Two threads or less should be showing
(Fig. 36).
5. If more than two threads are showing remove nut and
install washer between hub and nut (Fig. 36).
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2. Oil cooler
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