Drive System
Maintenance
Checking the Tire Pressure
Service Interval:
Every 25 hours—Check 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 (Figure 56). Check the tires
when they are cold to get the most accurate pressure reading.
Refer to the maximum pressure suggested by the tire
manufacturer on the sidewall of the caster wheel tires.
Inflate the rear drive wheel tires to 13 psi (90 kPa).
Figure 56
1.
Valve stem
Hydraulic System
Maintenance
Hydraulic System Oil Specification
Oil Type:
Toro HYPR-OIL® 500 or 20w-50 motor oil.
System Capacity: approximately
4.495 liter (152 oz) with a
filter change.
Important:
Use oil specified or equivalent. Other fluids
could cause system damage.
Checking the Hydraulic Oil
Level
Service Interval:
Every 25 hours
Check expansion reservoir and if necessary add oil to the
FULL COLD line.
G010253
1
2
3
Figure 57
1.
Expansion reservoir
3.
Engine
2.
Full Cold line
Changing the Hydraulic
System Filter and Oil
The filter and oil are changed at the same time.
Do Not
reuse
oil. Once the new filter is installed and oil is added any air in
the system must be purged.
The bleeding process is repeated until the oil remains at the
FULL COLD line in the reservoir after purging.
Failure to
properly perform this procedure can result in irreparable
damage to the transaxle drive system.
41
Summary of Contents for 74920 TITAN ZX4820
Page 13: ...119 8986 1 Fuel 2 Full 3 Half 4 Empty 13 ...
Page 55: ...Schematics G014723 Wire Diagram Rev B 55 ...
Page 56: ...Notes 56 ...
Page 57: ...Notes 57 ...
Page 58: ...Notes 58 ...
