Mixing Oil And Fuel; Operation; Starting/Stopping - Toro 51903; 51904; 51906; 51907 Operator's Manual

1. Always use fresh fuel mix per your operator's
manual.
2. Use the special additive STA-BIL or an
equivalent.
3. Always agitate the fuel mix before fueling the
unit.
4. Drain the tank and run the engine dry before
storing the unit.
Use Of Fuel Additives
The use of fuel additive, such as STA-BIL Gas
Stabilizer or an equivalent, will inhibit corrosion and
minimize the formation of gum deposit. Add 0.8 oz
(23 ml) per gallon of fuel per instructions on
container. NEVER add fuel additives directly to the
unit's fuel tank. Using a fuel additive can keep fuel
fresh for up to six (6) months.

Mixing Oil And Fuel

Note: For proper engine operation and
maximum reliability, pay strict
attention to the oil and fuel mixing
instructions on the 2-cycle oil
container. Use a 32:1 fuel/oil ratio
when you use 2-cycle oil. Using
improperly mixed fuel can severely
damage the engine.
Thoroughly mix the proper ratio of 2-cycle engine oil
with unleaded gasoline in a separate fuel can, 32:1.
Do not mix them directly in the engine fuel tank. See
the following table for specific gas and oil mixing
ratios.
32:1 GAS/OIL Mixing Chart
EN–7
POTENTIAL HAZARD
Gasoline contains gasses that can build up
pressure inside a gas tank.
WHAT CAN HAPPEN
Fuel can be sprayed on you when removing
gas cap.
HOW TO AVOID THE HAZARD
Remove fuel cap slowly to avoid injury
from fuel spray.

Operation

Starting/Stopping

1. Mix oil with gas and fill fuel tank with fuel/oil
mixture — Per instructions on page 7.
2. Fully press and release the primer bulb 5 to 7
times. See Fig. 10 for the primer bulb location.
3. Place the choke lever in the full "choke"
position. See Fig. 11.
4. With the unit on the ground, squeeze the throttle
trigger fully and pull the starter rope briskly
(Fig. 12) until the engine sounds like it wants to
run. (Normally 2 to 5 pulls).
5. Place the choke lever in the "partial" choke
position (Fig. 11). Pull the starter rope briskly 1
to 3 times to start the engine (Fig. 12).
6. If the engine does not start, repeat steps 3
through 5.
7. After the engine warms up for 5 to 10 seconds,
place the choke lever in the "run" position
(Fig. 11).
8. To stop the engine, hold the kill switch in the
"off" position until the engine stops (Fig. 9).