Manual

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Operator's Manual

Edger

Models 520

550

551

Model 550 and 551 Shown

IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

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 order by the operator.

In the State of California the above is required by law (Section 4442 of the California Public Resources Code). Other states may have

similar laws. Federal laws apply on federal lands. A spark arrester for the muffler is available through your nearest engine authorized

service dealer or contact the service department, P.O. Box 361131 Cleveland, Ohio 44136-0019.

MTD LLC, P.O. BOX 361131 CLEVELAND, OHIO 44136-0019

PRINTED IN U.S.A.

FORM NO. 769-00527C

(10/03)

Summary of content (20 pages)

PAGE 1
Operator's Manual Edger Models 520 550 551 Model 550 and 551 Shown IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY Warning: This unit is equipped with an internal combustion engine and should not be used on or near any unimproved forestcovered, 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 order by the operator.
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TABLEOFCONTENTS Content Page Assembling Your Edger Know Your Edger Operating Your Edger Making Adjustments 5 6 7 8 Content Maintaining And Servicing Your Edger Off Season Storage TroubleShooting 12 Illustrated Parts List Warranty Page 10 12 13 20 FINDINGMODELNUMBER This Operator's Manual is an important part of your new lawn mower. It will help you assemble, prepare and maintain the unit for best performance. Please read and understand what it says.
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SECTION 1: IMPORTANT SAFEOPERATION 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.
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. Neveroperatewithdamaged safetydevices. Failuretodoso,canresultin personal injury. 5. Neverrunanengineindoorsorina poorly ventilated area.Engineexhaustcontainscarbon monoxide, anodorlessanddeadlygas. 6. Donotoperatemachinewhileundertheinfluence ofalcoholordrugs. 7. Mufflerandenginebecomehotandcancausea burn.Donottouch. 8. Neveroperatethismachine withoutgoodvisibility or light.Alwaysbesureofyourfootingandkeepa firmholdonthehandles.Walk,neverrun. 9. Donotoperatethismachineif ithasbeendropped ordamaged.
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SECTION2: ASSEMBLING YOUREDGER IMPORTANT: This unit is shipped WITHOUT GASOLINE or OIL. After setting up the unit, service engine with gasoline and oil as instructed in the separate engine manual packed with your unit. Upper Handle NOTE: Reference to right or left hand side of the edger is observed from the operating position. Groundingthe Engine'sSpark Plug Disconnect the spark plug wire from the spark plug.
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SECTION3: KNOWYOUREDGER Bail Blade Depth Control Lever (Transport Position Shown) Pull Rope I Recoil Starter Curb Height Adjustment Lever (if Equipped) _. Bevel Adjustment If Equipped) \ Spindle Sheaves Belt Guard NOTE: Wheel and blade styles vary by model. Yours may differ slightly. Model 550 and 551 Shown. Figure 4 WARNING: Be familiar with all controls and their proper operation. Know how to stop the machine and disengage them quickly.
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SECTION4: OPERATING YOUREDGER The operation of any edger can result in foreign objects being thrown into the eyes, which can result in severe eye damage. Always wear safety glasses or eye shields. We recommend wide vision safety mask for over spectacles or standard safety glasses WARNING: Do not lower blade if blade is over concrete, asphalt, rocks or the like. The blade can strike the supporting surface, resulting in personal injury or property damage.
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SECTION5: MAKINGADJUSTMENTS BevelAdjustment(modelssoequipped) NOTE: Edgerfeatures vary by model. All edger models do NOT come equipped for blade tilt adjustment nor is there a blade tilt kit available to modify your edger if it was not purchased equipped to do so. Edging Set the bevel adjustment lever (refer to Figure 5) in the center notch to place the edger blade in a 90 ° position for edging. See Figure 7.
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Remove the spindle sheaves belt guard by removing the two self-tapping screws which secure it to the blade plate assembly. See Figure 9. ; Secure with the bell washer and the hex lock nut removed earlier. See Figure 11. Blade Plate > Bell Washer 1 Hex Lo_k Nut Figure 11 IMPORTANT: Use a torque wrench to tighten the hex lock nut to between 37 foot-tbs, and 50 foot-lbs. Belt Guard Sheaves Note: Wheel and blade styles vary by model.
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Lowertheright,rearwheelbymovingthecurb heightadjustment leverslightlytotheleft.See Figure12. Release the curb height adjustment lever to lock the wheel in position. See Figure 13. Adjustment Lever (Normal Operating Position) Figure 12 Curb Height Adjustment Pivot the right, rear wheel into an applicable position in relation to the height of the curb to be edged along.
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Withyourotherhand,carefullyreachundertherear oftheunitandremovethebeltfromaroundthe engineflywheelpulley. Removethespindlesheavesbeltguardby removing thetwoself-tapping screwswhichsecure ittothebladeplateassembly. SeeFigure9. Usetwowrenches(onewrenchtopreventthehex boltheadfromspinningandtheothertoremovethe hexlocknutandbellwasher)toremovetheedger blade.RefertoFigure10. Removeanddiscardtheedgerbladebutretainthe bellwasherandhexlocknut.
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SECTION7: OFF-SEASON STORAGE Observe the following when preparing the edger for long-term storage: Store the edger in a dry, clean area. Do not store next to any corrosive materials, such as lawn fertilizer. Clean and lubricate unit thoroughly as instructed on page 10 of this manual. Refer to the Engine Manual packed separately with the edger for engine manufacturers's storage instructions. Coat the edger, especially any springs and bearings with a light oil or silicone spray.
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SECTION9: PARTSLISTFORMODEL520/550/551 HANDLE 19t 15 \ 20 16 REE NO. 1 2 3 4 5 6 7 8 9 10 11 PART NO. 710-3103 710-0449 710-1205 710-3008 710-0606 712-3004A 720-0279 720-0142 720-0241 732-0369 736-0451 REE NO. 12 13 DESCRIPTION Screw, 5/16-18 Screw, 5/16-18 Eye Bolt Screw, 5/16-18 Screw Hex Lock Nut, 5/16-18 Wing Nut Grip Wing Knob Compression Spring Saddle Washer,,320 ID x,93 OD 14 15 16 17 18 19 20 PART NO.
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Model520/550/551Frame 2 lO 6 15 j._----11 7 i REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PART NO. 710-0191 710-0599 710-0654A 710-0944 712-0431 731-04168 736-0320 736-0452 736-3052 736-3090 750-04142 756-0313 756-1035A 756-1150A 787-01072 -'_-_-_--12 DESCRIPTION Screw, 3/8-24 Screw, 1/4-20 Screw, 3/8-16 Screw, 3/8-16 Flange Lock Nut, 3/8-16 Debris Guard Flat Washer, 3/8 ID x 1.37 OD Bell Washer,.396 x 1.140 Flat Washer,.406 x 1.00 Flat Washer,.260 x.720 Pulley Mount Spacer Flat Idler Pulley. 1.
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Model520 SpindleAssembly 11 7 29t 18 L[17 10 19 21 V-BELTS are specially designed to engage and disengage safely. A substitute (non-OEM) V-Belt can be dangerous by not disengaging completely. REE NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 PART NO. 687-02019 710-0395 710-0599 710-1143A 711-1017 712-3004A 712-3027 712-3056 714-0104 718-04012 731-04158 731-04207 732-04169 736-0119 736-0187 REF. NO.
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Model550And551SpindleAssembly I0 6 / / 23 1B 14 f // 5 V-BELTS are specially designed to engage and disengage safely. A substitute tnon-OEM) V-Belt can be dangerous by not disengaging completely. RER NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PART NO. 687-02019 710-0395 710-0599 710-1143A 712-3004A 712-3027 712-3056 714-3010 718-04012 731-04158 731-04207 732-04169 732-0168A 736-0119 736-0167 736-0317 REF. NO.
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Model520 WheelAssembly 3 (Frame shown for referenc_ /" 6 \ 8 3 \ \ \ \ \ 9 10 ,8 / REF. NO. 1 2 3 4 5 6 7 8 9 10 PART NO. 712-0431 732-04045 734-1987 734-1988 738-04037 738-04038 738-04039 750-0289 750-04129 787-01074 / DESCRIPTION Flange Lock Nut, 3/8-16 Torsion Spring Wheel 8xl .8 Wheel 7xl .8 Shoulder Screw,.50 x 9.36, 3/8-16 Shoulder Screw,.50 x 12.90, 3/8-16 Shoulder Screw,.50 x 3.19, 3/8-16 Spacer,.510 ID x.875 OD Spacer,.525 x.
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Model550And551WheelAssembly (Frameshownforreferenceonly) --... 2 7 18 19 6 REF. NO. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 PART NO. 687-02022 712-0431 732-04045 734-1987 734-1988 736-0182 736-0208 736-0232 736-0234 738-0213 738-0380 738-04036 738-04037 738-04041 750-04129 750-04165 750-0664 781-0100 787-01074 DESCRIPTION Curb Height Adjustment Lever Flange Lock Nut. 3/8-16 Torsion Spring Wheel 8xl .8 Wheel 7xl.8 Spring Washer,.500 x 1.00 Flat Washer,.51 IDx 1.5OD Wave Washer..531 ID x.
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MANUFACTURER'S LIMITED WARRANTY The limited warranty set forth below is given by MTD LLC with respect to new merchandise purchased and used in the United States, its possessions and territories. "MTD"warrants this product against defects in material and workmanship for a period of two (2) years commencing on the date of original purchase and will, at its option, repair or replace, free of charge, any part found to be defective in materials or workmanship.