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Operator’s Manual
20" Mulching Lawn
Mower
MODEL 573
IMPORTANT: Read safety rules and instructions carefully before operating equipment.
Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forest-covered, brush-
covered or grass-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 working o
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TABLE OF CONTENTS Content Page Important Safe Operation Practices................................................................... 3 Slope Guage...................................................................................................... 6 Assembling Your Lawn Mower .......................................................................... 7 Know Your Lawn Mower.................................................................................... 8 Operating Your Lawn Mower ............
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SECTION 1: IMPORTANT SAFE OPERATION PRACTICES WARNING: This symbol points out important safety instructions which, if not followed, could endanger the personal safety and/or property of yourself and others. Read and follow all instructions in this manual before attempting to operate this machine. Failure to comply with these instructions may result in personal injury. When you see this symbol—HEED ITS WARNING. WARNING: Engine exhaust, some of its constituents, and certain vehicle components
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serious personal injury. If you feel you are losing Do Not: your footing, release the blade control handle 1. Do not mow near drop-offs, ditches or immediately and the blade will stop rotating within embankments, you could lose your footing or three seconds. balance. 9. Mow in daylight or good artificial light. Walk, never 2. Do not mow slopes greater than 15 degrees as run. shown on the slope gauge. 10. Stop the blade when crossing gravel drives, 3. Do not mow on wet grass. Unstable foo
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7. Extinguish all cigarettes, cigars, pipes and other meet the original equipment specifications may sources of ignition. lead to improper performance and compromise 8. Never fuel machine indoors because flammable safety!” vapors will accumulate in the area. 4. Mower blades are sharp and can cut. Wrap the 9. Never remove gas cap or add fuel while the engine blade or wear gloves, and use extra caution when is hot or running. Allow engine to cool at least two servicing them. minutes before
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SECTION 2: SLOPE GAUGE 6 USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY. SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE A POWER POLE A CORNER OF A BUILDING OR A FENCE POST 15° WARNING 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 on such a slope, it is extremely difficult to maintain your footing and you could
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SECTION 3: ASSEMBLING YOUR LAWN MOWER To Remove Unit From Carton Carriage Bolt Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open Saddle carton. Washer Upper Remove loose parts included with your unit (i.e., Handle Lower operator’s manual, etc.). Handle Cut along corners and lay carton down flat. Remove packing material. Roll or slide unit out of carton. Hand Knob IMPORTANT: This unit is shipped without gasoline. Make sure to ser
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upper handle, and pull the starter rope out of the Converting to Side Discharge engine. Release the blade control handle. Slip the Your mower has been shipped as a mulcher. To starter rope into the rope guide. Tighten the wing convert it to a side-discharge mower, lift the nut. See Figure 4. mulching plug. Slide the two hooks on the side- Make certain all nuts and bolts are tightened discharge chute under the hinge pin on the securely. mulching plug assembly. Lower the mulching plug
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SECTION 5: OPERATING YOUR LAWN MOWER Grasp starter handle and pull rope out slowly until WARNING: Keep hands and feet away from engine reaches start of compression cycle (rope the chute area on cutting deck. The blade will will pull slightly harder at this point). Let the rope be rotating whenever the engine is running. rewind slowly. Pull rope with a rapid, continuous, full arm stroke. WARNING: Be sure no one other than the Keep a firm grip on starter handle. Return it slowly operat
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SECTION 6: MAKING ADJUSTMENTS Carburetor WARNING: Do not at any time make any Minor carburetor adjustments may be required to adjustment to your lawn mower without first compensate for differences in fuel, temperature, stopping the engine and disconnecting the altitude and load. To adjust carburetor, refer to the spark plug wire. engine manual. NOTE: A dirty air cleaner will cause an engine to run Handle Height rough. Make sure air cleaner is clean and attached to Your mower is shipped
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Engine Follow engine manual for lubrication instructions. Blade Adapter Blade Bell Support Lubricate Hex Bolt Lubricate Figure 11 Before reinstalling the blade and the blade adapter to the unit, lubricate the engine crankshaft and the inner surface of the blade adapter with light oil (or Lubricate engine oil).Also lubricate the bolt holes and bolts. To Reinstall Blade: Be sure to install the blade with the side of the blade marked “Bottom” (or with part number) facing the ground when
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performance and flooding usually indicates that the Clean engine regularly with a cloth or brush. Keep air cleaner should be serviced. To service the air the cooling system (blower housing area) cleaned cleaner, refer to the engine manual. to permit proper air circulation which is essential to The spark plug should be cleaned and the gap engine performance and life. Make sure to remove reset once a season. Spark plug replacement is all grass, dirt and combustible debris from muffler rec
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SECTION 9: TROUBLE SHOOTING GUIDE Trouble Possible Cause(s) Corrective Action Engine fails to start 1. Blade control handle disengaged. 1. Engage blade control handle. 2. Spark plug wire disconnected. 2. Connect wire to spark plug. 3. Fuel tank empty, or stale fuel. 3. Fill tank with clean, fresh gasoline. 4. Blocked fuel line. 4. Clean fuel line. 5. Faulty spark plug. 5. Clean, adjust gap or replace. 6. Engine flooded. 6. Wait a few minutes to restart. Do not prime. Engine runs erratic 1. Spar
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SECTION 10: PARTS LIST FOR MODEL 573 1 6 13 2 4 3 52 10 7 For engine parts break-down, 8 refer to the engine manual 15 11 46 9 5 50 17 14 21 28 27 26 16 23 30 31 53 12 35 45 29 33 32 47 34 22 20 19 49 51 18 48 26 21 19 37 31 26 38 39 27 19 36 41 42 24 23 43 25 44 14
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Model 573 Ref. No. Part No. Description Ref. No. Part No. Description 1. 747-0824 Control Handle 682-0517 Handle Bracket Assembly LH 2. 710-1270 Oval C-Sunk Screw 29. 736-0331 Bell Washer 3. 712-0324 Hex Lock Nut 30. 732-0731 Torsion Spring 4. 746-0883 Control Housing 31. 14578 Height Adjust. Assembly RH 5. 738-0878 Rear Axle 14579 Height Adjust. Assembly LH* 6. 749-0705A Upper Handle 32. 782-7006 Mounting Bracket 7. 710-1205 Rope Guide 33. 736-0270 Bell Washer 8. 710-1174 Carriage Bolt 34. 710-
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MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC adjustments, and normal deterioration of the with respect to new merchandise purchased and used in exterior finish due to use or exposure. the United States, its possessions and territories. d. MTD LLC does not extend any warranty for products sold or exported outside of the United MTD LLC warrants this product against defects for a States, its possesions and territories, except period of two (2)
