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Operator’s Manual
20" Mulching Push
Lawn Mower
MODEL 109
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 work
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TABLE OF CONTENTS Content Page Content Page Important Safe Operation Practices 3 Maintaining Your Lawn Mower 11 Slope Gauge 6 Off Season Storage 12 Assembling Your Lawn Mower 7 Trouble Shooting Guide 13 Know Your Lawn Mower 8 Illustrated Parts 14 Operating Your Lawn Mower 9 Warranty 16 Making Adjustments 10 FINDING MODEL 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. Please read and unders
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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 con
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other safety protective devices in place and working. power mower. Children 14 years old and over should Never operate mower with damaged safety devices. read and understand the operation instructions and Failure to do so, can result in personal injury. safety rules in this manual and should be trained and 21. Muffler and engine become hot and can cause a burn. Do supervised by a parent. not touch. 22. Only use parts and accessories made for this machine by Service the original equipment man
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meet the original equipment specifications may lead to expose moving parts or allow objects to be thrown. For improper performance and compromise safety!” safety protection, frequently check components and 4. Mower blades are sharp and can cut. Wrap the blade or replace immediately with original equipment wear gloves, and use extra caution when servicing them. manufacturer’s (O.E.M.) parts only, listed in this manual. 5. Keep all nuts, bolts, and screws tight to be sure the “Use of parts whi
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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 s
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SECTION 3: ASSEMBLING YOUR LAWN MOWER Tighten the hand knobs on each side of the handle To Remove Unit From Carton (carriage bolts and saddle washers must be seated Remove staples, break glue on top flaps, or cut tape properly into the handle as shown). See Figure 3. at carton end and peel along top flap to open carton. Remove loose parts included with your unit (i.e., NOTE: Your mower is shipped with the handle in the operator’s manual, etc.). higher height position. If you wish to lo
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With the spark plug wire disconnected and Converting to Side Discharge grounded, hold the blade control handle against the Your mower has been shipped as a mulcher. To upper handle, and pull the starter rope out of the convert it to a side-discharge mower, lift the engine. Release the blade control handle. Slip the mulching plug. Slide the two hooks on the side- starter rope into the rope guide. Tighten the wing discharge deflector under the hinge pin on the nut. See Figure 5. mulch
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SECTION 5: OPERATING YOUR LAWN MOWER Pull rope with a rapid, continuous, full arm stroke. WARNING: Keep hands and feet away Keep a firm grip on starter handle. Return it slowly from the chute area on cutting deck. The to the rope guide. If you encounter any problems, blade will be rotating whenever the engine is refer to the Trouble Shooting Guide for helpful running. information. Be sure no one other than the operator is standing near the lawn mower while starting NOTE: See your engine m
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SECTION 6: MAKING ADJUSTMENTS WARNING: Do not at any time make any Carburetor adjustment to your lawn mower without first stopping the engine and disconnecting the WARNING: If any adjustments are made to spark plug wire. the engine while the engine is running (e.g. carburetor), keep clear of all moving parts and heated surfaces (e.g. muffler). Handle Height Your mower is shipped with the handle in the higher Minor carburetor adjustments may be required to height position.To lower the handl
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SECTION 7: MAINTAINING YOUR LAWN MOWER WARNING: Always stop engine and To remove blade: disconnect spark plug wire before cleaning, Remove the bolt and blade bell support which hold lubricating or doing any kind of maintenance the blade and adapter to the engine crankshaft. work on lawn mower. See Figure 12. Remove the blade and the adapter from the crankshaft. Lubrication WARNING: Periodically inspect the blade adapter for cracks, especially if you strike a Blade Control foreign object. R
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Maintain engine oil as instructed in the engine Cutting Deck manual. The underside of the mower deck should be Service air cleaner every 25 hours of operation cleaned after each use to prevent a build-up of under normal conditions. Clean every few hours grass clippings, leaves, dirt or other matter. If this under extremely dusty conditions. Poor engine debris is allowed to accumulate, it will invite rust performance and flooding usually indicates that the and corrosion, and may pr
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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 109 1 13 6 8 10 7 15 11 8 2 9 16 12 28 17 27 18 35 20 22 23 32 21 38 5 25 33 30 38 26 38 34 20 31 22 36 37 23 24 38 39 25 27 21 26 29 3 19 4 14
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Model 109 Ref. No. Part No. Description Ref. No. Part No. Description 747-1161A Control Handle 731-1933 Front Deck Cover 1. 24. 736-0451 Saddle Washer 731-1426A Hubcap: Radial Spoke, Yellow 2. 25. 736-0524A Blade Bell Support 738-0507B Shoulder Bolt 3. 26. 710-1044 Hex Bolt 687-02077 Pivot Arm Assembly - RH Front 4. 27. 747-0710 Hinge Pin 5. Pivot Arm Assembly - LH Rear 687-02076 Pivot Arm Assembly - LH Front 749-1092A Upper Handle 6. Pivot Arm Assembly - RH Rear 710-1205 Rope Guide 7. 682-3024
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MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with e. MTD does not extend any warranty for products sold or respect to new merchandise purchased and used in the exported outside of the United States, its possessions United States, its possessions and territories. and territories, except those sold through MTD’s authorized channels of export distribution. “MTD” warrants this product against defects in material and f. Replacement parts that are n
