Servicing The Diesel Oxidation Catalyst (Doc); Fuel System Maintenance; Servicing The Water Separator - Toro 31202 Operator's Manual

time, the DPF needs to be removed and replaced with a clean
DPF. A Yanmar diagnostic tool will need to be used to reset
the engine ECU after a clean DPF is installed. Talk with your
Toro distributor and see your service manual for more details
on the removal and installation of the DPF.
If the DPF is not cleaned at the 50 g/L level, the engine will
continue to run at the de-rated 85% power level until the ash
accumulation reaches 60 g/L. When the ash level reaches 60
g/L, the engine will send out a fault (SPN 3720, FMI 0) and
the engine will de-rate to 50% power. At this time, the DPF
is fully plugged and needs to be removed and replaced with a
clean DPF. A Yanmar diagnostic tool will need to be used to
reset the engine ECU after a clean DPF is installed.
For information on servicing the Diesel Particulate Filter
(DPF), refer to the service manual or contact your Toro
distributor.
Servicing the Diesel Oxidation
Catalyst (DOC)
Service Interval: Every 6,000 hours
For information on servicing the Diesel Oxidation Catalyst
(DOC), refer to the service manual or contact your Toro
distributor.
Fuel System
Maintenance
Note: Refer to Adding Fuel for proper fuel
recommendations.
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 to the bottom
of the filler neck.
• 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.

Servicing the Water Separator

Service Interval: Every 400 hours
Drain water or other contaminants from water separator
(Figure 29) daily. Replace filter canister after every 400 hours
of operation.
1. Place a clean container under the fuel filter.
2. Loosen the drain plug on the bottom of the filter
canister and open the vent on the top of the canister
mount.
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.
35
Figure 29