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Manual DeWalt DW12A-O1T9739 Lawn Mower

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Manual

c. Pull the mower back slowly, no more than half

way toward you.

d. Repeat these steps as needed.

4. Do not engage the drive control (if equipped) while

starting engine.

5. The blade control is a safety device. Never attempt

to bypass its operation. Doing so makes the safety

device inoperative and may result in personal injury

through contact with the rotating blade. The blade

control must operate freely in both directions and

automatically return to the disengaged (off) position

when released. The cutting blade continues to

rotate for up to three seconds after the blade control

is released. Never place any part of the body in

the blade area until you are certain the blade has

stopped rotating.

6. If the mower should start to vibrate abnormally, stop

the engine and check immediately for the cause.

Vibration is generally a warning of trouble.

7. Never operate mower without the proper trail shield,

discharge cover, grass catcher, blade control or other

safety protective devices in place and working.

Never operate mower with damaged safety devices.

Failure to do so can result in personal injury.

8. When starting engine, pull cord slowly until

resistance is felt, then pull rapidly. Rapid retraction of

starter cord (kickback) will pull hand and arm toward

engine faster than you can let go. Broken bones,

fractures, bruises or sprains could result.

9. Do not put hands or feet near rotating parts or

under the cutting deck. Contact with the blade(s)

can amputate hands and feet.

10. Watch for holes, ruts, bumps, rocks, or other hidden

objects. Uneven terrain or hidden objects could

cause a slip and/or trip accident. Tall grass can

hide obstacles.

11. Your mower is designed to cut normal residential

grass of a height no more than 7” (17.5 cm). Do not

attempt to mow through unusually tall, dry grass

(e.g., pasture) or piles of dry leaves.

12. Plan your mowing pattern to avoid discharge of

material toward roads, sidewalks, helpers and the

like. Avoid discharging material against a wall or

obstruction which may cause discharged material to

ricochet back toward the operator.

13. Shut the engine off and wait until the blade comes

to a complete stop before removing the grass

catcher or unclogging the chute. The cutting blade

continues to rotate for up to three seconds after the

blade control is released. Never place any part of

the body in the blade area until you are certain the

engine is off and the blade has stopped rotating.

14. A missing or damaged discharge door, chute or

mulch plug can cause blade contact or thrown

object injuries.

15. Do not operate the mower without the discharge

door, chute, mulch plug or the entire grass catcher

in its proper place.

16. Stop the mower blade when crossing gravel drives,

walks, or roads and while not cutting grass.

17. Mow only in daylight or good artificial light.

18. Do not operate the mower while under the

influence of alcohol or drugs.

19. The muffler and engine become very hot and can

cause serious burn injuries. Do not touch. Allow

the mower to cool for at least five minutes before

storing or attempting any service.

20. Never run an engine indoors or in a poorly ventilated

area. Engine exhaust contains carbon monoxide, an

odorless and deadly gas.

Children

1. Tragic accidents can occur if the operator is not

alert to the presence of children. Children are often

attracted to the mower and the mowing activity.

They do not understand the dangers. Never assume

that children will remain where you last saw them.

2. Keep bystanders, children and pets inside while

the mower is in operation under watchful care of

a responsible adult other than the operator. Stop

mower if anyone enters the area.

3. Be alert and turn mower off if a child or bystander

enters the area.

4. Never allow children under 14 years of age to

operate this mower. Children 14 and over should

read and understand the instructions and safe

operation practices in this manual and on the

mower and should be trained and supervised by

an adult.

5. This mower is a precision piece of power equipment,

not a plaything. Therefore, exercise extreme caution

at all times. This mower has been designed to

perform one job: to mow grass. Do not use it for any

other purpose.

6. Use extreme care when approaching blind corners,

doorways, shrubs, trees or other objects that may

block your vision of a child who may run into the

path of the mower.

7. Keep children away from hot or running engines.

They can suffer burns from a hot engine or muffler.

8. If your mower is equipped with an Electric Start Push

Key, remove the key when the mower is unattended

to prevent unauthorized operation. Make certain the

key is inaccessible to small children.

SAFE OPERATION PRACTICES, cont'd

Download manual in English (PDF, 2.29 MB)

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WILLIE 26-07-2025
Main discharge back cover came off, any manual, video i can use to replace cover? Unable to get springs to engage to return cover to close position.

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More about this manual

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Specifications

Brand	DeWalt
Model	DW12A-O1T9739
Category	Lawn Mowers
File type	PDF
File size	2.29 MB

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Frequently Asked Questions about DeWalt DW12A-O1T9739 Lawn Mower

Our support team searches for useful product information and answers to frequently asked questions. If you find an inaccuracy in our frequently asked questions, please let us know by using our contact form.

How do I know when to sharpen the blades of my lawn mower? Verified

Sharp blades cleanly cut the grass. Dull blades roughly tears the grass which will quikly turn brown. If the lawn mower produces teared grass, then the blades should be sharpened or replaced.

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What is mulching? Verified

Some lawn mowers are able to mulch. Mulching finely shreds the grass and blows it back to the lawn. There the mulch functions as nutrition and protection for the grass.

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I accidentally put diesel in my petrol lawn mower, what should I do? Verified

Do NOT use the lawn mower. The only option is to completely empty the tank and fill it with the right fuel.

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What is the best lenght for my grass? Verified

To prevent the grass from drying out it should not be too short. It's better to mow the grass more often than to cut it too short. The optimal length it between 3 and 4 centimeter.

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Can I mow grass when it's wet? Verified

It is possible, but not advisable. When grass is wet it will lump together during mowing, preventing an optimal result.

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What is the right moment to mow my lawn? Verified

The best months for lawn mowing are March to October. Mowing should be done once or twice a week depending on how fast the grass grows. The best time of day to mow the grass is at the end of the afternoon and never in full sunlight. This is to prevent the grass from drying out after being cut.

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Can I let a robot mower work in the night? Verified

It's better not to let a robot mower work in the night. Some animals, like hedgehogs, are mostly active at night. They are often not quick enough to escape from the robot mower and can get severely wounded or killed.

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