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20. Never operate mower without proper trail  shield, 

discharge cover, grass catcher, blade control handle 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.

21. Muffler and engine become hot and can cause a burn. Do 

not touch.

22. Only use parts and accessories made for this machine by 

the manufacturer. Failure to do so, can result in personal 
injury.

23. If situations occur which are not covered in this manual, 

use care and good judgment. Contact your dealer for 
assistance. Telephone 1-800-800-7310 for the name of 
your nearest dealer.

Slope Operation

Slopes are a major factor related to slip and fall accidents 
which can result in severe injury. Operation on slopes 
requires extra caution. If you feel uneasy on a slope, do not 
mow it. For your safety, use the slope gauge included as part 
of this manual to measure slopes before operating this unit on 
a sloped or hilly area. If the slope is greater than 15 degrees, 
do not mow it.

Do:

1.

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

2.

Watch for holes, ruts, rocks, hidden objects, or bumps 
which can cause you to slip or trip. Tall grass can hide 
obstacles.

3.

Always be sure of your footing. A slip and fall can cause 
serious personal injury. If you feel you are losing your 
balance, release the blade control handle immediately, 
and the blade will stop rotating within 3 seconds.

Do Not:

1.

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

2.

Do not mow slopes greater than 15 degrees as shown on 
the slope gauge.

3.

Do not mow on wet grass. Unstable footing could cause 
slipping.

Children

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.

1.

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

2.

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

3.

Before and while moving backwards, look behind and 
down for small children.

4.

Use extreme care when approaching blind corners, 
doorways, shrubs, trees, or other objects that may 
obscure your vision of a child who may run into the 
mower.

5.

Keep children away from hot or running engines. They 
can suffer burns from a hot muffler. 

6.

Never allow children under 14 years old to operate a 
power mower. Children 14 years old and over should 
read and understand the operation instructions and 
safety rules in this manual and should be trained and 
supervised by a parent.

Service

Safe Handling Of Gasoline:

1.

To avoid personal injury or property damage use extreme 
care in handling gasoline. Gasoline is extremely 
flammable and the vapors are explosive. Serious 
personal injury can occur when gasoline is spilled on 
yourself or your clothes which can ignite. 

2.

Wash your skin and change clothes immediately.

3.

Use only an approved gasoline container.

4.

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.

5.

When practical, remove gas-powered equipment from 
the truck or trailer and refuel it on the ground. If this is not 
possible, then refuel such equipment on a trailer with a 
portable container, rather than from a gasoline dispenser 
nozzle.

6.

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.

7.

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

8.

Never fuel machine indoors because flammable vapors 
will accumulate in the area.

9.

Never remove gas cap or add fuel while the engine is hot 
or running.  Allow engine to cool at least two minutes 
before refueling.

10. Never over fill fuel tank. Fill tank to no more than ½ inch 

below bottom of filler neck to provide space for fuel 
expansion.

11. Replace gasoline cap and tighten securely.
12. If gasoline is spilled, wipe it off the engine and 

equipment. Move unit to another area. Wait 5 minutes 
before starting the engine.

13. Never store the machine or fuel container inside where 

there is an open flame, spark or pilot light as on a water 
heater, space heater,  furnace ,clothes dryer or other gas 
appliances. 

14. To reduce fire hazard, keep mower free of grass, leaves, 

or other debris build-up. Clean up oil or fuel spillage and 
remove any fuel soaked debris. 

15. Allow a mower to cool at least 5 minutes before storing.

General Service:

1.

Never run an engine indoors or in a poorly ventilated 
area. Engine exhaust contains carbon monoxide, an 
odorless and deadly gas.

2.

Before cleaning, repairing, or inspecting, make certain 
the blade and all moving parts have stopped. Disconnect 
the spark plug wire and ground against the engine to 
prevent unintended starting. 

Summary of Contents for PR-521

Page 1: ...covered land unless the engine s exhaust system is equipped with a spark arrester meeting applicable local or state laws if any If a spark arrester is used it should be maintained in effective workin...

Page 2: ...epartment or an authorized dealer You can locate the model number by standing in the operating position and looking down at the rear of the deck A sample model plate is explained below For future refe...

Page 3: ...n bystanders helpers and pets at least 75 feet from the mower while it is in operation Stop machine if anyone enters the area 6 Always wear safety glasses or safety goggles during operation and while...

Page 4: ...r 5 Keep children away from hot or running engines They can suffer burns from a hot muffler 6 Never allow children under 14 years old to operate a power mower Children 14 years old and over should rea...

Page 5: ...nd operating the mower 8 Never attempt to make a wheel or cutting height adjustment while the engine is running 9 Grass catcher components discharge cover and trail shield are subject to wear and dama...

Page 6: ...LY Do not mow on inclines with a slope in excess of 15 degrees a rise of approximately 2 1 2 feet every 10 feet A riding mower could overturn and cause serious injury If operating a walk behind mower...

Page 7: ...lower handles for shipping purposes Pull up and back on the upper handle to raise the handle into the operating position Make certain the lower handle is seated securely into the handle mounting brack...

Page 8: ...Your lawn mower is equipped with both a mulching baffle and a mulching plug While the mulching baffle is located at the rear of the mower the mulching plug is located on the right side of the cutting...

Page 9: ...g are used only for mulching purposes Instead of collecting the grass clippings in a grass catcher some mower models have the option of recirculating the clippings back to the lawn This is called mulc...

Page 10: ...To Stop Engine and Blade Release the blade control handle to stop the engine and blade WARNING The blade will continue to rotate for three seconds after the blade control lever is released Disconnect...

Page 11: ...the handle in the higher height position To lower the handle height for your convenience proceed as follows Remove the starter rope from the rope guide Remove the upper handle by removing the hand kn...

Page 12: ...he blade adapter with light oil or engine oil Also lubricate the bolt holes bolts and inner surface of the nuts Install the blade adapter on the crankshaft with the star away from the engine Refer to...

Page 13: ...with light oil Engine oil may also be used Engine Follow engine manual for instruction and schedule of lubrication NOTE When tipping the unit empty the fuel tank and keep engine spark plug side up SE...

Page 14: ...tank with clean fresh gasoline 3 Refer to the engine manual packed with your unit Engine overheats 1 Engine oil level low 2 Dirty aircleaner 3 Air flow restricted 4 Carburetor not adjusted 1 Fill cra...

Page 15: ...15 NOTES...

Page 16: ...16 NOTES...

Page 17: ...17 NOTES...

Page 18: ...1 11 9 7 82 16 15 18 3 2 19 4 6 4 31 50 48 47 44 45 64 56 20 55 63 36 34 33 32 40 39 57 59 20 45 44 43 41 42 59 23 66 67 58 30 51 53 62 65 81 49 22 72 21 14 13 12 71 52 54 39 40 29 A A 83 45 46 76 80...

Page 19: ...48 732 0417A Rear Spring Lever 49 14578 Height Adj Assy Comp RH N I 14579 Height Adj Assy Comp LH 50 14765 Pivot Bar R H N I 14766 Pivot Bar L H 51 782 5002 Front Baffle 52 710 0654A Hex L Wash Scr 3...

Page 20: ...det equipment used commercially is warranted for one year only Commercial use is defined as either having hired operators or used for income producing purposes Items not covered The warranty does not...

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