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Operator’s Manual
21” Rear & Side
Discharge Mulching
Lawn Mower
Model Series 430-439
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
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TABLE OF CONTENTS Content Page Important Safe Operation Practices................................................................................... 3 Slope Gauge...................................................................................................................... 6 Assembling Your Lawn Mower .......................................................................................... 7 Know 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: This machine was built to be operated according to the rules for safe oper
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8. Never operate the mower in wet grass. Always be Do Not: sure of your footing. A slip and fall can cause 1. Do not mow near drop-offs, ditches or serious personal injury. If you feel you are losing embankments, you could lose your footing or your footing, release the blade control handle balance. immediately and the blade will stop rotating within 2. Do not mow slopes greater than 15 degrees as three seconds. shown on the slope gauge. 9. Mow in daylight or good artificial light. Walk,
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7. Extinguish all cigarettes, cigars, pipes and other lead to improper performance and compromise sources of ignition. safety!” 8. Never fuel machine indoors because flammable 4. Mower blades are sharp and can cut. Wrap the vapors will accumulate in the area. blade or wear gloves, and use extra caution when 9. Never remove gas cap or add fuel while the engine servicing them. is hot or running. Allow engine to cool at least two 5. Keep all nuts, bolts, and screws tight to be sure the minut
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FOLD ON DOTTED LINE, REPRESENTING A 15° SLOPE 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 f
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SECTION 3: ASSEMBLING YOUR LAWN MOWER Removing Unit From Carton Remove staples, break glue on top flaps or cut tape at carton end and peel top flap to open carton. Remove loose parts if included with unit. Cut corners and lay carton down flat. Remove packing material. Roll or slide unit out of carton. Check carton thoroughly for loose parts. NOTE: Make sure not to crimp cables while removing the loose parts or the entire unit from the carton. Tools Required Figure 2 Pair of Pliers
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Insert post of cable ties that are on lower handle Place the bag over the frame (black plastic side is into the holes provided on the lower handle. The the bottom of bag). Slip the openings in the side of holes may be on the inside or outside. Pull cable the plastic channels on the bag over the hooks on ties tight and cut off the extra. See Figure 5 below. the grass catcher frame. Secure bag to frame by working the plastic Cable Tie channels on bag over frame as shown in Figure 7 B.
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from the black plastic bottom of the bag. Push the Place the mounting bracket under the front of the two frames together until the cross piece on the handle, with the tabs on the bracket facing up. front frame contacts the rear frame. Insert phillips head screws down through the Slip the openings in the side of the plastic channel hardtop cover and mounting bracket. Secure with on the bag over hooks on the grass catcher frame. hex lock nuts. See Figure 11. See Figure 9 B. Secure front
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Your mower has been shipped as a mulcher. To Converting to Side-Discharge convert it to a side-discharge mower, lift the mulching plug. Slide the two hooks on the side- Mulching discharge deflector under the hinge pin on the Plug mulching plug assembly. Lower the mulching plug. See Figure 14 . Do not remove the side mulching plug at any time, even when you are not mulching. Hinge Pin WARNING: Never operate the mower unless the hooks on the grass catcher are seated in the slots on the
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Primer Grass Bag Fill Indicator (If equipped) In some models, the grass bag is equipped with a bag- The primer is used to pump gas into the carburetor. Use fill indicator to add convenience to your work. While the it to assist in starting a cold engine, but do not use it mower is running, air will flow through the bag and into when restarting a warm engine after a short shutdown. the “sail.” If the grass catcher is empty, air flows Mulching Plug through easily pushing the sail up. If the gr
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deck, preventing proper mulching of grass Bagging Grass Clippings clippings. New or thick grass may require a You can use the grass catcher bag to collect clippings narrower cut. The ground speed should be while you are operating the mower. adjusted to the condition of the lawn. If mowing has Attach the grass catcher following instructions on been delayed and the grass has been allowed to page 9 of this manual. Grass clippings will grow in excess of 4", mulching is not automatically
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Engine Follow the engine manual instructions and Lubricate recommended schedule for lubricating engine. Pivot Points Lubricate the pivot points on the discharge chute door, blade control handle and the cutting height adjustment lever at least once a season with light Lubricate Follow engine manual oil. The blade control handle must operate freely in for lubrication both directions. The cutting height adjustment levers should be able to move easily. Lubricate Figure 16 SECTION 7: SERVI
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Before reassembling the blade and the blade Replacing Rear Flap adapter to the unit, lubricate the engine crankshaft To remove rear flap, cut off the flat end of the wire and the inner surface of the blade adapter with light rod which secures it to the deck. See Figure 19 . oil (or engine oil). Also lubricate the bolt holes, bolts Attach the new flap and new rod to deck, bending and inner surface of the nuts. the ends of the new rod over to secure to deck. Install the blade adap
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SECTION 9: OFF-SEASON STORAGE Prepare your lawn mower for storage at the end of the Store unit in a clean, dry area. Do not store next to season or if the unit will not be used for 30 days or corrosive materials, such as fertilizer or rocksalt. more. Store the mower in a clean, dry area. Clean underside of the mower according to instructions on page 12 . Gasoline Do not store gasoline from one season to another. NOTE: We do not recommend the use of pressure Gasoline, stored more than
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SECTION 11: PARTS LIST FOR MODEL SERIES 430-439 1 12 61 11 16 3 2 68 4 19 13 69 70 6 14 4 59 57 20 19 15 71 39 53 40 66 22 23 18 72 21 30 52 58 54 31 56 20 46 47 50 80 81 48 45 65 59 67 59 44 62 55 28 79 43 35 51 29 41 42 44 32 36 45 49 40 59 46 64 63 34 33 80 76 45 79 76 46 77 Hardware for wheel 734-1978 16
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Model Series 430-439 Ref. Ref. Part No. Description Part No. Description No No 1 747-1161A Control Handle 48 732-0404 Rear Spring Lever 2 710-1205 Rope Guide 49 14578 Height Adj. Assy. Comp. - RH 3 720-0279 Handle Knob 1/4-20 Thd. 14579 Height Adj. Assy. Comp. - LH ‡ 4 710-1174 Curved Hd. Bolt 5/16-18 x 2" 50 14765 Pivot Bar R.H. 5 731-2626 Bail Cover † N/I 14766 Pivot Bar L.H. 6 720-0284 Hand Knob 51 782-5002 Front Baffle 11 749-1092A Upper Handle 52 710-0654A Hex L-Wash.Scr. 3/8-16 x 1" 12
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Shroud Chart Part No. Color Part No. Color Part No. Color 731-1395A Red 731-1402A Yellow 751B281439 Dark Red 731-1396A Black 731-1694 Black 751B281440 Black 731-1397A Gray 731-1695 Silver 751B281443 Bright Red Hardware: 710-1256 731-1934A Charcoal Hardware: 710-1256 (Screw) Hardware: 710-1256 (Screw) Part No. Color Part No. Color Part No. Color 731-1585B Black 731-1586B Black 7510143208 Black Hardware: 710-1274 (Screw) 731-1612A Red Hardware: 7510042823 Hardware: 7510042823 Part No. Color Par
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Your Notes Date Comments 19
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MANUFACTURER’S LIMITED WARRANTY FOR: The limited warranty set forth below is given by MTD LLC with d. MTD LLC does not extend any warranty for products respect to new merchandise purchased and used in the sold or exported outside of the United States, its posses- United States, its possessions and territories. sions and territories, except those sold through MTD LLC’s authorized channels of export distribution. MTD LLC warrants this product against defects for a period of e. Parts that are no
