Checking The Cooling System - Toro 03170 Operator's Manual

The minimum cetane rating should be 40. Purchase
fuel in quantities that can be used within 180 days to
ensure fuel freshness.
The fuel tank capacity is approximately 7.5 gallons (28
liters).
Use summer grade diesel fuel (No. 2-D) at temperatures
above 20°F (-7°C) and winter grade (No. 1-D or No.
1-D/2-D blend) below that temperature. Using winter
grade fuel at lower temperatures provides a lower flash
point and cold flow characteristics which will ease
starting and reduce plugging of the fuel filter.
Use of summer grade fuel above 20°F (-7°C) will
contribute toward longer fuel pump life and increased
power compared to winter grade fuel.
Biodiesel Ready
This machine can also use a biodiesel blended fuel
of up to B20 (20% biodiesel, 80% petrodiesel). The
petrodiesel portion should be low or ultra low sulfur.
Observe the following precautions:
• The biodiesel portion of the fuel must meet
specification ASTM D6751 or EN14214.
• The blended fuel composition should meet ASTM
D975 or EN590.
• Painted surfaces may be damaged by biodiesel
blends.
• Use B5 (biodiesel content of 5%) or lesser blends
in cold weather.
• Monitor seals, hoses, gaskets in contact with fuel as
they may be degraded over time.
• Fuel filter plugging may be expected for a time after
converting to biodiesel blends.
• Contact a distributor for more information on
biodiesel blended fuel.
1. Clean the area around the fuel tank cap (Figure 37).
Figure 37
1. Fuel tank cap
2. Remove the fuel tank cap.
3. Fill the tank to the bottom of the filler neck. Do
not overfill.
4. Install the cap.
5. Wipe up any fuel that may have spilled.

Checking the Cooling System

Service Interval: Before each use or daily
Clean debris off of the radiator and the oil cooler daily
(Figure 38). Clean the radiator hourly if conditions are
extremely dusty and dirty; refer to Cleaning the Engine
Cooling System.
1. Access panel
2. Radiator
The cooling system is filled with a 50/50 solution of
water and permanent ethylene glycol anti-freeze. Check
the coolant level at the beginning of each day before
starting the engine.
The capacity of the cooling system is approximately
6 qt (5.7 l).
CAUTION
If the engine has been running, the pressurized,
hot coolant can escape and cause burns.
• Do not open the radiator cap when the engine
is running.
• Use a rag when opening the radiator cap, and
open the cap slowly to allow steam to escape.
1. Check the coolant level in the expansion tank
(Figure 39).
28
Figure 38
3. Oil cooler