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IMPORTANT: READ SAFETY RULES AND INSTRUCTIONS CAREFULLY

MTD PRODUCTS INC. P.O. BOX 368022 CLEVELAND, OHIO 44136-9722

Model Series

230 and 520

22" SELF-PROPELLED

ROTARY MOWERS

PRINTED IN U.S.A.

FORM NO.770-10013

O

PERATOR’S

 

M

ANUAL

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 368022 Cleveland, Ohio 44136-9722.

                    

(11/98) 

(520 Series Shown)

Summary of Contents for Series 230

Page 1: ...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...

Page 2: ...k like Figure 1 SECTION 2 CALLING CUSTOMER SUPPORT LOCATE YOUR MODEL NUMBER AND SERIAL NUMBER Record this information in the space provided To find your unit s specific model number and serial number...

Page 3: ...pets Stop engine when they are in the vicinity of your mower to help prevent blade contact or thrown object injury Although the area of operation should be completely cleared of foreign objects an ob...

Page 4: ...not operate this unit on that area or serious injury could result DO Mow across the face of slopes never up and down Exercise extreme caution when changing direction on slopes Watch for holes ruts hid...

Page 5: ...ularly After striking a foreign object stop the engine remove the wire from the spark plug and thoroughly inspect the mower for any damage Repair the damage before starting and operating the mower Nev...

Page 6: ...LY 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...

Page 7: ...ower disconnect the spark plug wire from the spark plug and ground it against the engine See Figure 3 Figure 3 This operator s manual covers various mower models Follow instructions which pertain to y...

Page 8: ...t of the handle refer to the Adjustment Section at this time ALL UNITS Remove the hairpin clips from the outer hole in the weld pins on the handle mounting brackets Using a pair of pliers squeeze one...

Page 9: ...part number for the mulch kit is OEM 190 115 and can be acquired through your local MTD retailer service center or by calling 800 800 7310 If your mower is already equipped with a mulching baffle ins...

Page 10: ...cated on the engine It is used to regulate engine speed The engine is equipped with a constant speed throttle which is set at full throttle for maximum engine and cutting performance WARNING The throt...

Page 11: ...rward It should move freely Pull mower backward It should move with only a small amount of resistance If the rear wheels tend to lock up the clutch may not be releasing completely Do not start the eng...

Page 12: ...wn The best mowing pattern is one that allows the clippings to discharge towards the uncut part of the lawn This permits recutting of the clippings to further pulverize them When cutting high weeds di...

Page 13: ...ndle and remove it from the mower Figure 10 Turn the lower handle around so the notches on the bottom of the lower handle are facing forward as shown in Figure 10 Reassemble placing the bottom holes i...

Page 14: ...t be achieved in the previous step unhook the Z end of the spring from lower hole and insert into the higher adjustment hole Check the spring length as instructed in step one Figure 11 CARBURETOR ADJU...

Page 15: ...0168 WARNING Be sure to disconnect and ground the spark plug wire before performing any repairs or maintenance CUTTING BLADE WARNING Periodically inspect the blade adapter for cracks especially if you...

Page 16: ...rder of assembly Tighten the hex bolt according to the blade mounting torque mentioned below BLADE MOUNTING TORQUE Center Bolt 450 in lbs min 600 in lbs max To ensure safe operation of your unit all n...

Page 17: ...in to remove all grass dirt and combustible debris from muffler area BELT REPLACEMENT Disconnect the spark plug wire and ground it against the engine Drain the fuel tank or place a piece of plastic be...

Page 18: ...ke sure to tighten all nuts and bolts securely If you had put plastic under the gas cap before tipping the unit remove it now SECTION 10 OFF SEASON STORAGE The following steps should be taken to prepa...

Page 19: ...with fresh fuel Refer to the engine manual packed with your unit Refer to the engine manual packed with your unit Engine overheats Engine oil level low Dirty air cleaner Air flow restricted Carburetor...

Page 20: ...23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 18 34 50 52 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 3...

Page 21: ...531 I D x 93 50 736 0270 Bell Wash 1 4 I D 51 710 0751 Hex Bolt 1 4 20 x 62 Lg Grade 5 52 712 0324 Hex L Nut 1 4 20 Thd 53 710 1270 Machine Screw 1 4 x 20 54 746 0883 Cable Housing w o Throttle 55 710...

Page 22: ...22 Model Series 520...

Page 23: ...0599 Hex TT Tap Screw1 4 20x 5 49 17032 Adapter Plate 50 747 0710 Hinge Pin 51 714 0104 Internal Cotter Pin 5 16 Dia 52 749 0734B Lower Handle 53 726 0240 Cable Tie 54 720 0276 Hand Knob 55 746 0843...

Page 24: ...Idler Plastic 1 50 Dia Incl Ref 22 22 741 0556 Needle Brg 375 x 375 24 782 7570 Idler Brk t Ass y 25 712 0138 Hex Patch L Nut 1 4 28 Thd 26 732 0357A Extension Spring 1 12 Lg 27 618 0054 Lower Hsg Hal...

Page 25: ...1 1695 731 1934 Color Yellow Black Silver Charcoal Hardware 7510042823 Part No 7510143208 Color Black Hardware 7510042823 Part No 731 1586B 731 1612A Color Black Red Hardware 710 1274 Part No 731 1585...

Page 26: ...26 NOTES...

Page 27: ...27...

Page 28: ...Department of MTD PRODUCTS INC Transportation charges Transportation charges for the movement of any power equipment unit or attachment are the responsibility of the purchaser Units exported out of th...

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