Bleeding Air From The Injectors; Draining The Fuel Tank; Servicing The Fuel Filters - Toro 41593 Operator's Manual

Bleeding Air from the Injectors

You should perform this procedure only after you have
purged the air in the system while you prime the engine and it
does not start; refer to Bleeding the Fuel System (page 38).
1. Loosen the pipe connection to the No. 1 nozzle and
holder assembly.
2. Move the throttle to the Fast position.
3. Turn the key in the key switch to the Start position
and watch the fuel flow around the connector. Turn
the key to the Off position when you observe a solid
flow of fuel.
4. Tighten the pipe connector securely.
5. Repeat this procedure for the remaining nozzles.

Draining the Fuel Tank

Service Interval: Every 400 hours/Yearly (whichever comes
first)
Drain and clean the fuel tank if the fuel system becomes
contaminated or if you plan to store the machine for an
extended period. Use fresh, clean fuel to flush out the tank.
1. Transfer the fuel from the tank into an approved fuel
container using a siphon pump, or remove the tank
from the machine and pour the fuel out of the tank fill
spout into the fuel container.
Note: If you remove the fuel tank, you will need to
remove the fuel and return hoses from the tank before
removing the tank.
2. Replace the fuel filter; refer to the Replacing the
In-Tank Fuel Filter section.
3. Flush the tank with fresh, clean fuel, if necessary.
4. Install the tank if you removed it in step 1.
5. Fill the tank with fresh, clean fuel.

Servicing the Fuel Filters

The sprayer has 2 fuel filters, a fuel filter/water separator
(located between the fuel pump and the carburetor) and an
in-tank filter (located in the outlet tank fitting).
Servicing the Water Separator
Service Interval: Every 400 hours
Drain water or other contaminants from water separator
(Figure 46) daily.
1. Place a clean container under the fuel filter.
2. Loosen the drain plug on the bottom of the filter
canister.
1. Water-separator-filter canister
3. Clean the area where the filter canister mounts.
4. Remove the filter canister and clean the mounting
surface.
5. Lubricate the gasket on the filter canister with clean oil.
6. Install the filter canister by hand until the gasket
contacts mounting surface, then rotate it an additional
1/2 turn.
7. Tighten the drain plug on the bottom of the filter
canister.
Replacing the In-Tank Fuel Filter
Service Interval: Every 400 hours
Note: The fuel filter is a part of the standpipe assembly.
1. Set the parking brake, stop the pump, stop the engine,
and remove the ignition key.
2. Loosen the clamp that secures the fuel line hose to the
elbow fitting on the top of the fuel tank.
3. Disconnect the hose from the elbow fitting, and allow
any fuel in the hose to drain into an approved fuel
container.
4. Remove the old standpipe assembly from the fuel tank.
5. Install a new standpipe assembly obtained from your
local Authorized Toro Dealer.
Note: You may need a new grommet to secure the
elbow fitting and standpipe assembly to the top of the
fuel tank.
6. Connect the fuel line hose onto the elbow fitting, and
secure the hose to the elbow fitting with a clamp.
7. Continue draining the fuel tank; refer to Draining the
Fuel Tank (page 39).
39
Figure 46