Yard Machines 520 manual

IMPOR TANT: READ SAFETY RULES AND INSTRUCTIONS CAREFUL LY MTD PRODUCTS INC. P .O. B OX 368022 CLEVELAND, OHIO 44136-9722 Model Series 230 and 520 22" SELF-PROPELLED RO TARY MOWERS PRINTED IN U.S.A. FORM NO.770-8559A O PER AT OR’S M AN UAL Warning: This unit is equipped with an internal combustion engine and should not be used on or near any [...]

2 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 YOUR LAWN MOWER. FAILURE TO COMPLY WITH THESE INSTRUCTIONS MAY R[...]

3 • Do not engage the self-propelled mechanism on units so equipped while starting engine. • The blade control handle is a safety device. Never attempt to bypass its operation. Doing so makes the safety device inoperative and may result in personal injury through contact with the rotating blade. The blade control handle must operate easily in b[...]

4 • To reduce fire hazard, keep mower free of grass, leaves, or other debris build-up. Clean up oil or fuel spillage. Allow mower to cool at least 5 minutes before storing. • Before cleaning, repairing, or inspecting, make certain the blade and all moving parts have stopped. Disconnect the spark plug wire, and keep the wire away from the spark [...]

5 SECTION 2: FINDING YOUR MODEL NUMBER This Operator’s Manual is an important part of your new walk behind. It will help you assemble, prepare and maintain your walk behind. Please read and understand what it says. Before you start to prepare your walk behind for its first use, please locate the model plate and copy the information from it in thi[...]

6 Slope Gauge 15° SIGHT AND HOLD THIS LEVE L WITH A V ERTICAL TREE A POWE R POLE A CORNER OF A BUILDING OR A FENCE P OST F O L D O N D O T T E D L I N E , R E P R E S E N T I N G A 1 5 ° S L O P E USE THIS PAGE AS A GUIDE TO DETERMINE SLOPES WHERE YOU MAY NOT OPERATE SAFELY. Do n ot mow on inclin es with a slope in exces s of 15 degrees (a rise o[...]

7 SECTION 4: UNPACKING To removing unit from carton 1 . Remove staples, break glue on top flaps, or cut tape at carton end and peel along top flap to open carton. 2 . Remove loose parts if included with unit (i.e., owner's manual, etc.). 3 . Make sure the cables are straight and not crimped while removing loose parts or the unit from the carto[...]

8 This owner's guide covers various models of mowers. Follow only those instructions which pertain to your unit. IMPORTANT: This unit is shipped without gasoline or oil in the engine. Be certain to service engine with gasoline and oil before operating your mower. NOTE: Reference to right or left hand side of the mower is observed from the oper[...]

9 1. Lift the chute deflector on the mower. Slide the notches in the bottom of the mulching baffle over the lip of the discharge opening. See Figure 6. 2. Push the hooks on the top of the baffle until they snap over the hinge on the discharge chute. Release the chute deflector. FINAL ASSEMB LY Make certain all nuts and bolts are tightened securely.[...]

10 SECTION 6: OPERATION WARNING: Keep hands and feet away from the chute area on cutting deck. See Figure 1 in the Safety Section. WARNING: The operation of any lawn mower 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 f[...]

11 TO STOP ENGINE AND BLADE 1. Move throttle control lever to SLOW position. 2. Release the blade control handle to stop the engine and blade. WARNING: The blade continues to rotate for a few seconds after the engine is shut off. 3. Disconnect the spark plug wire and ground it against the engine to prevent accidental starting while equipment is una[...]

12 Figure 10 4. Turn the lower handle around so the notches on the bottom of the lower handle are facing forward as shown in Figure 10. 5. Reassemble, placing the bottom holes in the handle over the weld pins in the handle mounting bracket. 6. Reassemble the upper handle. 7. Place the hairpin clips in the inner holes in the weld pins and attach the[...]

13 THROTTLE CONTROL ADJUSTMENT If the throttle control requires adjustment or if it has been replaced and need adjustment, proceed as follows: Figure 12 1. Remove the screw shown in Figure 12. Remove the cable clamp from the cable. NOTE: If you have a Tecumseh engine, simply loosen the screw so the cable will move freely beneath the clamp. It is no[...]

14 T ransmission The transmission is pre-lubricated and sealed at the factory. It does not require checking. If disassembled for any reason, fill with 2 ounces of Alvania grease, part number 737-0168. WARNING: Be sure to disconnect and ground the spark plug wire before performing any repairs or maintenance. NOTE: When tipping the unit, empty the fu[...]

15 BLADE MOUNTING TORQUE Center Bolt: 450 in. lbs. min., 600 in. lbs. max.; Blade Adapter Bolts (if applicable): 200 in. lbs. min., 350 in. lbs. max. To ensure safe operation of your unit, all nuts and bolts must be checked periodically for correct tightness. DECK The underside of the mower deck should be cleaned after each use to prevent a buildup[...]

16 7. Remove the belt from between the idler pulley and the belt guard on the idler pulley bracket. 8. Remove the belt from the transmission pulley. 9. Push the idler pulley up and out of the way. See Figure 18. 10. Slide the belt in from the rear of the deck, and place it around the transmission pulley. Figure 18 11. Release the idler pulley so th[...]

17 SECTION 10: TROUBLE SHOOTING GUIDE **Self-propelled models only Note: For repairs beyond the minor adjustments above, contact your local authorized service dealer. Trouble Possible Cause(s) Corrective Actions Engine fails to start Blade control handle disengaged. Spark plug wire disconnected. Dirty aircleaner. Primer button not depressed. Thrott[...]

18 Model Series 230 30 30 33 31 32[...]

19 Model Series 230 RE F . NO. PART NO. DESCRIPTION 1 747-0824 Control Handle Ass’ y . (Std.) 2 720-0225 Foam Grip (2 Req’d.) 720-0226 Foam Grip (1 Req’d.) (Optional) 3 746-0876 Throttle Lever 4 710-0605 Oval C-Sunk Scr. 5 712-0324 Hex L-Nut 1/4-20 Thd. 6 736-0501 Sp r. Wash. .66" I. D . 7 646-0875 Throttle Body 8 811-00185 Throttle Box [...]

20 111 710-0841 Fl-”C”-Sunk Hd. T ap Scr. #10 x .75" Lg. 112 736-0356 Bell Wash. .39 I. D . x 1.38 O. D . 122 711-0805 Shld. Pin 3/8-24 x 1.43" Lg. 128 712-0711 Hex Jam Nut 3/8-24 Thd. 130 736-0270 Bell Washer .265 ID x .75 131 710-0751 Cap Screw HH 1/4-20 x .620 133 748-0318 Ratchet Wheel 1.62" O. D . 134 741-0522 Hex Flange Bea[...]

21 Model Series 230 and 520 18 46 RE F . NO. PART NO. DESCRIPTION 1 710-1062 Hex Bolt 1/4-20 x 1.25" Lg. 2 726-0329 L-Wash. 1/4" I. D . 3 618-0053 Upper Hsg. Half (Incl. Ref. 12) 4 713-0400 #48 Sprocket 7 Tooth x 1/2 Pitch 5 736-0336 Fl-Wash. 5/8" I. D . x .030 6 741-0413 Hex Flange Brg. .631" I. D . 7 16500A Hex Bearing Cup 8 7[...]

22 Model Series 520 †Optional Hub Caps Description Part No. Gray (3-1/2” Dia.) Black (4-1/4” Dia.) Gray (4-1/4” Dia.) Gray (5-1/2” Dia.) 720-0249 731-0354 731-0355A 731-0981A ** Front Wheel Chart Size Tread Type Part No. 8” x 1.75” 8” x 1.75” 8” x 2” Bar T read “T” T read “S” Wave 634-0020 734-1268 734-1512A[...]

23 Model Series 520 RE F . NO. PART NO. DESCRIPTION 1 647-0004 Control Handle Ass’ y . (Deluxe) 747-0824 Control Handle Ass’ y . (Std.) 2 720-0225 Foam Grip (Optional) 3 749-0539B Upper Handle 4 710-0605 Oval C-Sunk Scr. 5 646-0875 Throttle Body 6 746-0550 Control Cable—39" Lg. 7 736-0501 Spring Wash. .66" I. D . 8 712-0324 Hex L-Nu[...]

24 Shroud Chart Pa rt N o. 751B281439 751B281440 751B281443 Color Dark Red Black Bright Red Pa rt N o. 731-1395A 731-1396A 731-1397A Color Red Black Gray Pa rt N o. 731-1587A 731-1603A 731-1610A 731-1620A Color Black Y ellow Pewter Gray Pa rt N o. 731-1561 Color Black Hardware: 710-1256 (Screw) Hardware: 710-1256 (Screw) Hardware: 710-1184 (Screw) [...]

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MANU FA CTURER’S LIMITED WARRANTY FOR: For TWO YEARS from the date of retail purchase within the United States of America, its possessions and territories, MTD PRODUCTS INC will, at its option, repair or replace, for the original purchaser, free of charge, any part or parts found to be defective in material or workmanship. This warranty covers un[...]