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Mow across the face of slopes; never up and down.
Exercise extreme caution when changing direction
on slopes.

Watch for holes, ruts, bumps, rocks, or other hidden
objects. Uneven terrain could cause a slip and fall
accident. Tall grass can hide obstacles.

Do not mow on wet grass or excessively steep slopes.
Poor footing could cause a slip and fall accident.

Do not mow near drop-offs, ditches, or
embankments. You could lose your footing or
balance.

Children

Tragic accidents can occur if the operator is not alert to
the presence of children. Children are often attracted to
the machine and the mowing activity.

Never

assume

that children will remain where you last saw them.

Keep children out of the mowing area and under
the watchful care of a responsible adult other than
the operator.

Be alert and turn mower off if a child enters the area.

Never allow children to operate the machine.

Use extra care when approaching blind corners,
shrubs, trees, or other objects that may block your
view of a child.

Service

Safe Handling of Gasoline

To avoid personal injury or property damage, use
extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.

Extinguish all cigarettes, cigars, pipes, and other
sources of ignition.

Use only an approved gasoline container.

Never remove gas cap or add fuel with the engine
running. Allow engine to cool before refueling.

Never refuel the machine indoors.

Never store the machine or fuel container where
there is an open flame, spark, or pilot light such as
on a water heater or on other appliances.

Never fill containers inside a vehicle or on a truck
or trailer bed with a plastic liner. Always place
containers on the ground away from your vehicle
before filling.

Remove gas-powered equipment from the truck
or trailer and refuel it on the ground. If this is not

possible, then refuel such equipment with a portable
container, rather than from a gasoline dispenser
nozzle.

Keep the nozzle in contact with the rim of the fuel
tank or container opening at all times until fueling is
complete. Do not use a nozzle lock-open device.

If fuel is spilled on clothing, change clothing
immediately.

Never overfill fuel tank. Replace gas cap and tighten
securely.

Exhaust contains carbon monoxide, an
odorless, deadly poison that can kill you.

Do not run the engine indoors or in an enclosed
area.

General Service

Never operate machine in a closed area.

Keep all nuts and bolts tight to be sure the equipment
is in safe working condition.

Never tamper with safety devices. Check their
proper operation regularly.

Keep machine free of grass, leaves, or other debris
build-up. Clean up oil or fuel spillage and remove
any fuel-soaked debris. Allow machine to cool
before storing.

If you strike a foreign object, stop and inspect the
machine. Repair, if necessary, before starting.

Never make any adjustments or repairs with the
engine running. Disconnect the spark plug wire
and ground against engine to prevent unintended
starting.

Check grass catcher components and the discharge
guard frequently and replace with manufacturer’s
recommended parts, when necessary.

Mower blades are sharp. Wrap the blade or wear
gloves, and use extra caution when servicing them.

Do not change the engine governor setting or
overspeed the engine.

Maintain or replace safety and instruction labels, as
necessary.

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Summary of Contents for 10640

Page 1: ...an Authorized Service Dealer or Lawn Boy Customer Service and have the model and serial numbers of your product ready Figure 1 identifies the location of the model and serial numbers on the product W...

Page 2: ...nd follow all instructions on the machine and in the manual s before starting Do not put hands or feet near or under the machine Keep clear of the discharge opening at all times Only allow responsible...

Page 3: ...fill containers inside a vehicle or on a truck or trailer bed with a plastic liner Always place containers on the ground away from your vehicle before filling Remove gas powered equipment from the tr...

Page 4: ...read the instructions before servicing or performing maintenance 4 Cutting dismemberment hazard of hand or foot mower blade stay away from moving parts and keep all guards and shields in place 5 Cutt...

Page 5: ...th oil in the engine but it does come with a bottle of oil 1 Remove the dipstick Figure 4 Figure 4 2 Slowly pour oil into the oil fill tube until the oil level reaches the Full line on the dipstick Fi...

Page 6: ...gnition key electric start models only 3 Air filter 10 Grass bag 4 Fuel tank cap 11 Battery electric start models only 5 Oil fill Dipstick 12 Cutting height levers 4 6 Recoil start handle 13 Battery c...

Page 7: ...or daily 1 Remove the dipstick wipe it clean and fully install the dipstick Figure 9 Figure 9 2 Remove the dipstick and check the oil level Figure 9 If the oil level is below the Add mark on the dipst...

Page 8: ...Engine 1 Firmly push in the primer 3 times with your thumb holding the primer in for a second before releasing it each time models 10643C and 10644C only Figure 11 Figure 11 Note If the air temperatu...

Page 9: ...uthorized Service Dealer Figure 16 Mulching the Clippings Your mower comes from the factory ready to mulch the grass and leaf clippings back into the lawn If the grass bag is on the mower remove it re...

Page 10: ...n appearance If the grass is too long the mower may plug and cause the engine to stall Mow only dry grass or leaves Wet grass and leaves tend to clump on the yard and can cause the mower to plug or th...

Page 11: ...dulls quickly Refer to your Engine Operator s Manual for any additional yearly maintenance procedures Important Refer to your Engine Operator s Manual for additional maintenance procedures Preparing f...

Page 12: ...s 1 Perform the pre maintenance procedures refer to Preparing for Maintenance 2 Remove the dipstick Figure 21 Figure 21 3 Tip the mower onto its side with the dipstick down to drain the used oil out t...

Page 13: ...mportant You will need a torque wrench to install the blade properly If you do not have a torque wrench or are uncomfortable performing this procedure contact an Authorized Service Dealer Examine the...

Page 14: ...pel drive bar and ensure that the cable is loose Note The cable must be loose with the self propel drive bar in the released position otherwise the mower may creep when the bar is disengaged Cleaning...

Page 15: ...corrosion during the off season 7 Loosely install the spark plug 8 Tighten all nuts bolts and screws 9 Charge the battery for 24 hours then unplug the battery charger an store the mower in an unheated...

Page 16: ...tarting difficulties due to the following Failure to follow proper maintenance procedures Rotary mower blade striking an object Contaminants in the fuel system Improper fuel consult your Operator s Ma...

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