Fuel System Maintenance; Servicing The Fuel System; Servicing The Water Separator - Toro 31598 Operator's Manual

Fuel System
Maintenance

Servicing the Fuel System

DANGER
Under certain conditions, diesel fuel and fuel
vapors are highly flammable and explosive. A fire
or explosion from fuel can burn you and others and
can cause property damage.
• Use a funnel and fill the fuel tank outdoors, in
an open area, when the engine is off and is cold.
Wipe up any fuel that spills.
• Do not fill the fuel tank completely full. Add fuel
to the fuel tank until the level is 1 inch (25 mm)
below the bottom of the filler neck. This empty
space in the tank allows the fuel to expand.
• Never smoke when handling fuel, and stay away
from an open flame or where fuel fumes may be
ignited by a spark.
• Store fuel in a clean, safety-approved container
and keep the cap in place.
Fuel Tank
Service Interval: Every 1,000 hours—Drain and clean
the fuel tank.
Drain and clean the fuel tank every 1000 hours.
Also, drain and clean the tank if fuel system becomes
contaminated or if the machine will be stored for an
extended period of time. Use clean fuel to flush out
the tank.
Fuel Lines and Connections
Service Interval: Every 500 hours—Inspect the fuel
lines and connections.
Check the fuel lines and connections every 500 hours
or yearly, whichever comes first. Inspect them for
deterioration, damage, or loose connections.

Servicing the Water Separator

Service Interval: Before each use or daily—Drain the
water separator
Every 500 hours—Replace the
fuel/water separator element.
Draining the Water Separator
1. Place a clean container under the water separator
(Figure 62).
2. Open the drain plug and operate the pump to drain
off contaminates (Figure 62).
1. Water separator filter
canister
2. Priming pump
3. Drain plug
3. Close the drain plug.
Replacing the Fuel Filter Element
1. Place a clean container under the water separator.
2. Drain some fuel by loosening the vent plug and
opening the drain plug (Figure 62).
3. Disconnect the water sensor (electrical connector)
from the bottom of the water separator
4. Clean the area where the filter element mounts to
the head.
5. Remove the filter element and bowl. Remove the
element from the bowl and clean the mounting
surface.
6. Clean the O-ring gland on the bowl.
7. Apply a coating of clean fuel or motor oil to the new
O-ring and element seal.
8. Spin the bowl onto the new element and then spin
them both onto the filter head by hand only. Do not
use tools.
9. Close the drain plug.
48
Figure 62
4. Flow check valve
5. Vent plug