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8

Before Starting

Engines which are certified to comply with California
and U.S. EPA emission regulations for ULGE engines:
Are certified to operate on regular unleaded gasoline/oil
mix. Include the following emission control system(s):
EM, TWC (if so equipped); Do not include any user
adjustable features— therefore no other adjustments are
needed.

Mixing Gasoline and Oil

Use only clean, fresh, lead-free gasoline (including
oxygenated or reformulated gasoline) with an octane
rating of 87 or higher. To ensure freshness, purchase only
the quantity of gasoline you expect to use in 30 days.
Using unleaded gasoline results in fewer combustion
chamber deposits and longer spark plug life.

IMPORTANT: Do not use methanol, gasoline
containing methanol, gasohol containing mmore than
10% ethanol, premium gasoline, or white gas. Using
these fuels can damage the engine’s fuel system.

IMPORTANT: Do not use automotive oil (i.e., SAE 30,
10W30, etc.), a two–cycle oil that is not NMMA– or
TCW–certified, or a fuel mixed at the wrong
gasoline/oil ratio. This can cause engine damage not
covered under the Lawn-Boy warranty.

DANGER

POTENTIAL HAZARD

In certain conditions gasoline is extremely
flammable and highly explosive.

WHAT CAN HAPPEN

A fire or explosion from gasoline can burn you,
others, and cause property damage.

HOW TO AVOID THE HAZARD

Use a funnel and fill the fuel tank outdoors, in
an open area, when the engine is cold. Wipe up
any gasoline that spills.

Do not fill the fuel tank completely full. Add
gasoline to the fuel tank until the level is 1/4” to
1/2” (6 mm to 13 mm) below the bottom of the
filler neck. This empty space in the tank allows
gasoline to expand.

Never smoke when handling gasoline, and stay
away from an open flame or where gasoline
fumes may be ignited by a spark.

Store gasoline in an approved container and
keep it out of the reach of children.

Never buy more than a 30-day supply of
gasoline.

DANGER

POTENTIAL HAZARD

When fueling, under certain circumstances, a
static charge can develop, igniting the gasoline.

WHAT CAN HAPPEN

A fire or explosion from gasoline can burn you
and others and cause property damage.

HOW TO AVOID THE HAZARD

Always place gasoline containers on the ground
away from your vehicle before filling.

Do not fill gasoline containers inside a vehicle
or on a truck or trailer bed because interior
carpets or plastic truck bed liners may insulate
the container and slow the loss of any static
charge.

When practical, remove gas–powered
equipment from the truck or trailer and refuel
the equipment with its wheels on the ground.

If this is not possible, then refuel such
equipment on a truck or trailer from a portable
container, rather than from a gasoline
dispenser nozzle.

If a gasoline dispenser nozzle must be used,
keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until
fueling is complete.

1. Pour a half gallon of gasoline into an approved

gasoline container.

Note: Do not mix gasoline and oil in the fuel tank. Oil at
room temperature mixes easier and more thoroughly than
cold oil. Oil below 32

_

F (0

_

C) requires additional mixing.

2. Add the proper amount of high–grade, NMMA– or

TCW–certified two-cycle oil to acheive a 32:1
gasoline–to–oil mixture ratio. Refer to  the following
table:

32:1 Gasoline-to-Oil Mixture Ratio

4 oz. (0.118L) can

8 oz. (0.236L) can

20 oz. (0.590L) bottle

Oil

Gasoline

1 gallon (3.75L)

2 gallons (3.75L)

5 gallons (3.75L)

For best results, use Lawn-Boy 2-Cycle Generation II
Ashless Oil
.

3. Install the cap on the gasoline container and shake the

container to mix oil and gas thoroughly.

4. Remove the cap and add the remaining gasoline.

Summary of Contents for 320

Page 1: ...uel crivez l adresse ci dessous N oubliez pas d indiquer les num ros de mod le et de s rie de votre produit Lawn Boy Inc Attn Parts Dept 8111 Lyndale Ave S Bloomington MN 55420 1196 Domestic English E...

Page 2: ...eproductive harm Introduction Thank you for choosing a Lawn Boy product We want you to be completely satisfied with your new purchase Read this manual carefully to learn how to operate and maintain yo...

Page 3: ...earing adequate winter garments Wear footwear which will improve footing on slippery surfaces Handle fuel with care it is highly flammable Use an approved fuel container Never add fuel to a running or...

Page 4: ...imes Lawn Boy Snowthrower Safety The following list contains safety information specific to Lawn Boy products or other safety information that you must know that is not included in the ANSI or ISO sta...

Page 5: ...ey could cause a safety hazard Safety and Instruction Decals Safety decals and instructions are easily visible to the operator and are located near any area of potential danger Replace any decal that...

Page 6: ...a wood block under the wheel axle for support Fig 2 2 Slide a spacer and wheel onto the axle Ensure that the side of the wheel with six spokes faces the center of the axle Slide a pushnut onto the en...

Page 7: ...endicular to the upper hole in the left handle and tighten Installing the Control Cable 1 Route the control cable through the eyebolt on the left side of the snowthrower Fig 4 2 Hook the spring into t...

Page 8: ...en flame or where gasoline fumes may be ignited by a spark Store gasoline in an approved container and keep it out of the reach of children Never buy more than a 30 day supply of gasoline DANGER POTEN...

Page 9: ...mb and slowly push in the primer twice pausing for two seconds between each push For temperatures below 0_F 18_C repeat this step as necessary Note Do not use the choke and the primer when starting a...

Page 10: ...children and pets away from area of operation The snowthrower clears down to the ground and propels itself forward when you raise the handle The snowthrower tilts slightly forward so that the rotor bl...

Page 11: ...engine and wait for all moving parts to stop 2 Move the control bar back toward the handle to remove the slack in the cable 3 Ensure that a 1 16 to 1 8 in 0 16 to 0 32 cm gap exists between the contro...

Page 12: ...e the drive belt may wear and require replacement If after adjusting the control bar the drive belt continues to slip under a heavy load or the rotor does not turn check to see if the belt is severely...

Page 13: ...t off the panel allowing it to hang on the recoil rope 3 Pull the wire off the spark plug and remove the spark plug Fig 15 m 2580 1 Figure 15 1 Spark plug wire 4 Examine the plug and replace it if it...

Page 14: ...7 4 680 Figure 18 1 Rotor blade 2 Rotor half 3 Torx screw 4 Locknut 5 Hex head capscrew 6 Spacer 7 Auger shaft assembly 8 Hex head screw Installing the New Blade 1 Examine the rotor blade edge for th...

Page 15: ...ng cylinder bore corrosion 1 Slowly pull the recoil starter until you feel resistance due to compression pressure then stop 2 Release the starter tension slowly to prevent the engine from reversing du...

Page 16: ...Does Your State Law Relate To This Warranty 4 5 01 16 4 24 55 9 44 06 26 14 52 55 10 5 56 18 4 10 51 241 7 65 5 24 55 9 44 06 1 5 016 18 4 D 156 1 4 7 4 06 0 0 5 48 14 2 465 57 5 6 45 7 7 4 065 0 670...

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