MTD Yard-Man 12A-559K401 Operator's Manual
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MTD Yard-Man 12A-559K401 Operator's Manual

MTD Yard-Man 12A-559K401 Operator's Manual

21" self-propelled mulching mower
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YaRD-MaN
OPERATOR
S MANUAL
21" Self-Propelled
Mulching Mower
Model No.
12A-559K401
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 attester meeting
applicable
local or state laws (if any), If e spark arrester is used, it should be maintained
in effective working order by the operator,
In the State of California fhe 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 th rough your nearest engine authorized
service dealer or contact the service department,
P.O. Box 368022 Cleveland, Ohio 44136-9722.
MTD PRODUCTS
INC. P.O. BOX 368022 CLEVELAND,
OHIO 44136-9722
PRINTED IN U,S,A.
FORM NO. 770-0907A
(12/97)

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Summary of Contents for MTD Yard-Man 12A-559K401

  • Page 1 YaRD-MaN OPERATOR S MANUAL 21" Self-Propelled Mulching Mower Model No. 12A-559K401 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...

  • Page 2: Table Of Contents

    Table of Contents Content Page Safe Operation Practices ................. Slope Gauge .................... Finding Model Number ................Unpacking ....................Setting Up Mower ..................Controls ....................Operation ....................Maintenance .................... Service & Adjustments ................Off-Season Storage ................Trouble-Shooting Guide ................Repair Parts .................... Warranty ....................

  • Page 3: Safe Operation Practices

    SECTION 1: IMPORTANT SAFE OPERATION PRACTICES 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 your lawn mower. Failure to comply with these instructions may result in personal injury.

  • Page 4: Slope Gauge

    • Never tamper with safety devices. Check their proper operation regularly. • Mow across the face of slopes; never up and down. ° After striking a foreign object, stop the engine, Exercise extreme caution when changing direction remove wire from spark plug, on slopes.
  • Page 5 SIGHT AND HOLD THIS LEVEL WITH A VERTICAL TREE 1+41 A POWER POLE I 911 A CORNER OF A BUILDING OR A FENCE POST •, VlF_j.) ..SLop Lt%_ 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).

  • Page 6: Finding Model Number

    3: FINDING MODEL NUMBER This owner's guide is an important part of your new Yard-Man lawn mower. It will help you to assemble, prepare and maintain your mower. Please read and understand what it says. Before you start assembling the mower for its first use, please locate its model plate and copy the information on to this owner's guide.

  • Page 7: Setting Up Mower

    SECTION 5: SETTING UP MOWER Tools Required • Pair of Pliers • Funnel • Set of adjustable wrenches Disconnecting Spark Plug • Before setting up your lawn mower, disconnect the spark plug wire from the spark plug, and ground it against the engine. See Figure 3. •...
  • Page 8 Note:Makesureto routethecables insidethelowerhandle. A lsodonotcrimpthecableswhileliftingthe handle up. • Forshipping purposes, the hairpinclip is placedin the outerholeof the weldpin on the lower handle. R emove t he hairpin clipfromthe outerholeoftheweldpin. • Usinga pairof pliers,insertthe hairpinclip intothe innerholein the weldpin. Repeat o n other side.SeeFigure 5B.
  • Page 9 Attaching Grasscatcher • Lift the rear discharge door and remove the rear mulching baffle from the mower. See Figure 7. Rear Mulching Baffle FIGURE 7 NOTE: Make sure that the cables are routed to the outside of the handle and out of the way when attaching the grasscatcher.

  • Page 10: Controls

    SECTION 6: 'CONTROLS Read this owner's manual and safety rules before operating your lawn mower. Compare the illustrations in Figure 9 with your lawn mower to familiarize yourself with the location of various controls and adjustments. Save this manual for future reference, The operation of any lawn mower can result in foreign objects being thrown into the operator's eyes thus causing severe eye damage.

  • Page 11: Operation

    SECTION 7: OPERATION Gas And Oil Fill-Up Oil: • Only use high quality detergent oil rated with API service classification SF, SG or SH. Use SAE30 oil; do not use 10W40 oil, • Fill oil sump and check the oil level following steps below. a.
  • Page 12 • Grasp starter handle and pull rope out slowly until engine reaches the start of compression cycle (rope will pull slightly harder at this point). Let the rope rewind slowly. Pull rope with a rapid, continuous, full arm stroke. Keeping a firm grip on the starter handle, let the rope rewind slowly. •...

  • Page 13: Maintenance

    Adjusting Cutting Height Refer to height adjustments section of this manual on page 16 for instruction on how to adjust the cutting height and the handle height. • For best results in mowing, keep the cutting height position high until it is determined which height is best for your lawn.

  • Page 14: Service & Adjustments

    Chute Deflector & Rear Discharge Door • Lubricate the torsion spring and the pivot point on each end of the chute deflector and the rear discharge door using a light oil. This will prevent rusting and ensure that the deflector, which is a safety device, can aJways work properly.
  • Page 15 To Remove Blade • Remove the bolt and bell washer which hold the blade-pulley assembly to the engine crankshaft. See Figure t2A, Remove the assembly from the crankshaft. • Remove the two bolts and lock nuts from the blade assembly. •...
  • Page 16 Replacing Drive Belt • Remove the two shoulder screws from on top of the deck which secures the belt guard to the mower deck. See Figure 13. • Remove the belt guard from the unit by lightly pressing inward on the sides of the belt guard. This will release the tabs that secure the belt guard to the height adjuster brackets.
  • Page 17 Adjusting Drive Clutch • The drive clutch adjustment wheel is located on the drive clutch control handle housing and is used to tighten or loosen the drive belt. See. You will have to adjust the drive clutch control if any of the following happens.

  • Page 18: Off-Season Storage

    An adjusting plate and thumb lever at each wheel position provides cutting height adjustment. Each adjusting plate has nine height positions. Height of cut will be changed when the thumb lever is moved from one hole to another. • Simply depress the lever towards the wheel and move the lever assembly to desired position. See Figure 16B. •...

  • Page 19: Trouble-Shooting Guide

    • Change oilif it hasnotbeenchanged inthe lastthreemonths. F orinstructions on howto change oil,referto theengine manual. • Clean engine and remove any grass clippings, dirt, or chaff from the exterior of the engine. • Remove any dirt or debris from cooling fins, air intake screen, levers, and linkage, Other •...

  • Page 20: Repair Parts

    SECTION 12: REPAIR PARTS 14 _ 10 "73 _"...
  • Page 21 Rel. Ref. Part No. Code Description Part No, i Code Description 731-1057 756_1146 Upper Drive Cover Drive Pulley 731-0620 Drive Lever 746-0411 Blade Adapter 731-1058 Lower Drive Cover 742-0741 Mulching Blade: 21" 731-t059 736-0452 Flat Washer .516 x 1,5 x .134 Mounting Cap 710-0841 Screw # 10-12 x .75...
  • Page 22 • ® 35-" ® • "...
  • Page 23 Ref. Code Code Part No. Description Description Ref. Part No. 712-3025 HexJam Nut5/16-24 Hex Screw w/Washer 1/4-20 x .750 710-t276 736-0425 Bell Washer.325 x .930 x .045 Transmission Assembly 756-1042 Pulley 618-0298 (includes ref.# 1to 30) Bell Washer.325 x .930 x .045 736-0425 Bearing Retainer 1732-0708...

  • Page 24: Warranty

    MANUFACTURER'S LIMITED WARRANTY FOR: YaRD-MaN' For TWO YEARS from the date of retail purchase products sold or exported outside of the United within the United States of America, its possessions States of America, its possessions and territories, and territories, MTD PRODUCTS...

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