Mixing Fuel; Proper Fuel Mixing Procedure - Snapper 520E Operator's Manual

FUEL AND OIL MIXTURE
The snowthrower uses a two cycle engine that requires a
mixture of fuel (gasoline) and oil for lubrication of engine
bearings and other moving parts.
The correct fuel/oil mixture ratio is 50 to 1. Use fuel/oil
mixture chart shown.
NOTE: To prevent damage to engine, carefully
observe recommended fuel to oil mixing ratio and
procedures.
• Gasoline and oil must be premixed in a clean fuel
container.
• Always use fresh, unleaded, winter grade fuel.
• Never put plain, unmixed fuel into fuel tank. Shake
fuel container each time before filling fuel tank.
• Never use "stale" fuel left over from last season or
stored for long periods.
• DO NOT USE MULTI VISCOSITY OILS, SUCH AS
10W-30 or 10W-40.

PROPER FUEL MIXING PROCEDURE

1. Fill approved clean fuel container one quarter full with
fresh unleaded fuel - one quart (one liter) in a one
gallon (4 liter) container.
2. Pour recommended amount of high quality two
cycle oil — 2.5 ounces (80 ml) into fuel container for
one gallon (4 liters) of fuel. (NOTE: DO NOT USE
MULTI VISCOSITY OILS, SUCH AS 10W-30 or
10W-40.)
3. Reinstall cap on the fuel container and shake con-
tainer vigorously so oil mixes with gasoline.
4. Unscrew cap and fill container with fuel. Shake con-
tainer again.
5. Remove fuel tank cap and carefully pour mixed fuel
into the fuel tank, filling to 1/2 inch (1.5 cm) below
filler neck to allow room for expansion. Never put
plain, unmixed fuel into fuel tank. Shake fuel con-
tainer each time before filling fuel tank.
WARNING
Gasoline is highly flammable and must be
handled with care. Follow these fuel handling
precautions:
• Use an approved fuel container.
• DO NOT run the unit indoors. DO NOT fill fuel
tank indoors or while engine is running.
• Allow engine to cool for at least ten minutes
before refueling.
• Wipe up any spilled fuel before starting the
engine.
• Fuel vapors can travel to distant ignition
sources. Keep fuel and fuel vapors away from
ignition sources.
FUEL TO OIL MIXTURE CHART (50:1)
U.S.
Gasoline 2 Cycle Oil Gasoline 2 Cycle Oil Gasoline 2 Cycle Oil
Gallons Ounces Gallons
1 2.5
2 5
5 13
A B
Figure 7. Proper Fuel Mixing Procedure
A. Fill Container with 1 Quart (1 Liter) of fuel
B. 2.5 Ounces (80 ml) of two-cycle oil
C. Combine in container, then shake container
D. Additional fuel brings total to 1 Gallon (4 liters)
11
Controls & Operation
Imperial Metric
Ounces Liters
1 2.8 4
2 5.6 8
5 14.1 20
C
Milliliters
80 ml
160 ml
400 ml
D