Servicing Fuel System; Cleaning Radiator And Screen; Changing Coolant In Cooling System - Toro 30789 Operator's Manual

Servicing Fuel System

Danger
In certain conditions, gasoline is extremely
flammable and highly explosive. A fire or
explosion from gasoline can burn you and others
and can damage property.
Fill the fuel tank outdoors, in an open area,
when the engine is cold. Wipe up any gasoline
that spills.
Do not fill the fuel tank completely full. Add
gasoline to the fuel tank until the level is 1 in.
(25 mm) below the bottom of the filler neck.
This empty space in the tank allows gasoline to
expand.
Never smoke when handling gasoline, and stay
away from an open flame or where gasoline
fumes may be ignited by a spark.
Store gasoline in an approved container and
keep it out of the reach of children. Never buy
more than a 30-day supply of gasoline.
Always place gasoline containers on the ground
away from your vehicle before filling.
Do not fill gasoline containers inside a vehicle or
on a truck or trailer bed because interior
carpets or plastic truck bed liners may insulate
the container and slow the loss of any static
charge.
When practical, remove gas-powered equipment
from the truck or trailer and refuel the
equipment with its wheels on the ground.
If this is not possible, then refuel such
equipment on a truck or trailer from a portable
container, rather than from a gasoline dispenser
nozzle.
If a gasoline dispenser nozzle must be used, keep
the nozzle in contact with the rim of the fuel
tank or container opening at all times until
fueling is complete.
Fuel Lines and Connections
Check lines and connections every 400 hours or yearly,
whichever comes first. Inspect for deterioration, damage or
loose connections.
Replacing Fuel Filter
Replace the fuel filter after every 400 hours of operation or
yearly, whichever comes first.
1. Disconnect elbow fitting from rear of fuel filter
(Fig. 29).
2. Disconnect front of filter from elbow fitting (Fig. 29).
3. Install new filter and connect fittings. Start engine and
check for leaks.
3
1
1. Fuel filter
2. Rear elbow

Cleaning Radiator And Screen

The screen and front of the radiator must be kept clean to
prevent the engine from overheating. Normally, check the
screen and front of radiator daily and, if necessary, clean
any debris off these parts. However, it will be necessary to
check and to clean the screen each quarter hour and radiator
checked every hour in extremely dusty and dirty
conditions.
Note: This situation may be particularly prevalent if the
rear discharge cutting unit is being used. The front of the
radiator can be cleaned thoroughly by blowing with
compressed air from the fan side of the radiator. Make sure
to clean out any debris that settles to the bottom of the
screen. The screen in front of radiator can be removed—by
loosening wing nuts at top of screen—to make cleaning
easier.
Changing Coolant In Cooling
System
The cooling system must be filled with a 50/50 solution of
water and permanent ethylene glycol anti–freeze. Every
two years, drain the coolant from the radiator and engine by
opening the drain cock and block plug. After coolant is
drained, flush the entire system and refill it with a 50/50
solution of water and anti–freeze. Capacity of cooling
system is approximately 6 quarts (5.7 L). When filling the
radiator, level of coolant must be above the core and 1 inch
(25 mm) below bottom of filler neck. DO NOT
OVERFILL. Always install radiator cap securely.
32
2
Figure 29
3. Front elbow