Cleaning The Cooling Systems; Tire Pressure; Fuel Filter - Toro Z-Master 250 Series Operator's Manual

Maintenance

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 30
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. 31). 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 31
1. Valve stem
40
1
Ó Ó Ó Ó
Ó Ó
Ó Ó Ó Ó
m–3801
2. Oil cooler
1
m–1872

Fuel Filter

Replace the fuel filter after every 200 operating hours
or yearly, whichever occurs first.
Replacing the Fuel Filter
Never install a dirty filter if it is removed from the
fuel line.
1. Disengage the power take off (PTO) and turn the
ignition key to "OFF" to stop the engine. Move
controllers to neutral locked position and apply
parking brake. Remove the key.
2. Close fuel shut–off valve on console.
3. Squeeze the ends of the hose clamps together
and slide them away from the filter (Fig. 32).
4. Remove the filter from the fuel lines.
5. Install a new filter and move the hose clamps
close to the filter (Fig. 33).
6. Wipe up any spilled fuel.
7. Open fuel shut-off valve on console.
1
Figure 32
1. Filter
2
m–3217
2. Hose clamp