MTD 550 Operator's Manual
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Operator's Manual
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)
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Summary of Contents for MTD 550
- Page 1 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.
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Page 2: Table Of Contents
TABLEOFCONTENTS Content Page Content Page Maintaining And Servicing Your Edger Assembling Your Edger Off Season Storage Know Your Edger TroubleShooting Operating Your Edger Illustrated Parts List Making Adjustments Warranty FINDINGMODEL NUMBER 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. - Page 3 SECTION 1: IMPORTANT SAFEOPERATION P RACTICES 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.
- Page 4 19. If situations occur which are not covered in this monoxide, anodorless a nddeadly gas. manual, use care and good judgment. Contact an 6. Donotoperate machine whileunder theinfluence authorized MTD service dealer or telephone 1-800- ofalcohol ordrugs. 800-7310. 7. Muffler a ndengine become hotandcancause a burn.Donottouch.
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Page 5: Assembling Your Edger
SECTION 2: ASSEMBLING YOUR EDGER IMPORTANT: This unit is shipped WITHOUT Upper Handle 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. NOTE: Reference to right or left hand side of the edger is observed from the operating position. -
Page 6: Know Your Edger
SECTION 3: KNOW YOUR EDGER 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. -
Page 7: Operating Your Edger
SECTION 4: OPERATING Y OUR EDGER The operation of any edger can result IMPORTANT: Using the primer to restart a warm engine in foreign objects being thrown into after a short shutdown is usually not necessary. Doing the eyes, which can result in severe so may result in a flooded engine. -
Page 8: Making Adjustments
SECTION 5: MAKING ADJUSTMENTS BevelAdjustment ( models soequipped) Edging Set the bevel adjustment lever (refer to Figure 5) in the NOTE: Edgerfeatures vary by model. All edger models center notch to place the edger blade in a 90 ° position do NOT come equipped for blade tilt adjustment nor is for edging. - Page 9 Secure with the bell washer and the hex lock nut Remove the spindle sheaves belt guard by removing the two self-tapping screws which secure removed earlier. See Figure 11. it to the blade plate assembly. See Figure 9. Blade Plate >...
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Page 10: Maintaining And Servicing Your Edger
Lower theright,rearwheel b ymoving thecurb Release the curb height adjustment lever to lock height a djustment leverslightly totheleft.See the wheel in position. See Figure 13. Figure 12. Adjustment Lever (Normal Operating Position) Figure 12 Pivot the right, rear wheel into an applicable Curb Height Adjustment Lever position in relation to the height of the curb to be... - Page 11 Withyourother h and, c arefully reach under t herear With your other hand, carefully reach under the rear oftheunitandremove thebelt f romaround the of the unit and remove the belt from around the engine flywheel pulley. engine flywheel pulley. Remove thespindle sheaves beltguard by Remove the spindle sheaves belt guard by removing t hetwoself-tapping screws which secure removing the two self-tapping screws which secure...
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Page 12: Off Season Storage
Refer to the Engine Manual packed with your unit. Excessive vibration Edger blade bent or damaged Replace edger blade. Contact an authorized MTD service dealer. Blade spindle bent or damaged Belt worn or stretched Drive belt slips Replace drive belt. -
Page 13: Illustrated Parts List
SECTION 9: PARTS LISTFORMODEL 520/550/551 HANDLE PART PART DESCRIPTION DESCRIPTION 710-3103 Screw, 5/16-18 746-04036 Wheel Adjustment Cable 710-0449 Screw, 5/16-18 746-04035 Control Cable (Briggs & Stratton) 710-1205 Eye Bolt 746-04052 Control Cable (Tecumseh) 710-3008 Screw, 5/16-18 747-0976A Bail Handle 710-0606 Screw 749-1225 Upper Handle... - Page 14 Model520/550/551Frame j._----11 -'_-_-_--12 PART DESCRIPTION 710-0191 Screw, 3/8-24 710-0599 Screw, 1/4-20 710-0654A Screw, 3/8-16 710-0944 Screw, 3/8-16 712-0431 Flange Lock Nut, 3/8-16 731-04168 Debris Guard 736-0320 Flat Washer, 3/8 ID x 1.37 OD 736-0452 Bell Washer,.396 x 1.140 736-3052 Flat Washer,.406 x 1.00 736-3090 Flat Washer,.260 x.720 750-04142...
- Page 15 Model520 Spindle Assembly L[17 V-BELTS are specially designed to engage and disengage safely. A substitute (non-OEM) V-Belt can be dangerous by not disengaging completely. REF. PART PART DESCRIPTION DESCRIPTION 687-02019 736-0317 Bell Washer,.63 ID x 1.20D Blade Plate Assembly 710-0395 736-3090 Flat Washer,.260 x.72 Hex Screw, 5/16-18...
- Page 16 Model550And551Spindle Assembly V-BELTS are specially designed to engage and disengage safely. A substitute tnon-OEM) V-Belt can be dangerous by not disengaging completely. PART REF. PART DESCRIPTION DESCRIPTION 687-02019 736-3090 Blade Plate Assembly Flat Washer,.260 x.72 710-0395 737-3000 Hex Screw, 5/16-18 Lube Fitting, 3/16 710-0599 738-04025...
- Page 17 Model520 WheelAssembly (Frame shown for referenc_ /" REF. PART DESCRIPTION 712-0431 Flange Lock Nut, 3/8-16 732-04045 Torsion Spring 734-1987 Wheel 8xl .8 734-1988 Wheel 7xl .8 738-04037 Shoulder Screw,.50 x 9.36, 3/8-16 738-04038 Shoulder Screw,.50 x 12.90, 3/8-16 738-04039 Shoulder Screw,.50 x 3.19, 3/8-16 750-0289 Spacer,.510 ID x.875 OD 750-04129...
- Page 18 Model550And551WheelAssembly (Frameshownforreference only) --... REF. PART DESCRIPTION 687-02022 Curb Height Adjustment Lever 712-0431 Flange Lock Nut. 3/8-16 732-04045 Torsion Spring 734-1987 Wheel 8xl .8 734-1988 Wheel 7xl.8 736-0182 Spring Washer,.500 x 1.00 736-0208 Flat Washer,.51 IDx 1.5OD 736-0232 Wave Washer..531 ID x.781 OD 736-0234 Washer,.385 x 1.5 738-0213...
- Page 19 g.Ef.E8...
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Page 20: Warranty
MANUFACTURER'S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with MTD does not extend any warranty for products sold or exported outside of the United States, its possessions respect to new merchandise purchased and used in the United States, its possessions and territories.