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MZ MAGNUM 54
ZERO-TURN MOWER
OWNER'S, SERVICE & PARTS MANUAL
For additional information, please see us at
www.badboymowers.com
Bad Boy, Inc.
102 Industrial Drive
Batesville, Arkansas 72501
©2016 11-28
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Summary of Contents for Bad Boy MZ MAGNUM 54
- Page 1 MZ MAGNUM 54 ZERO-TURN MOWER OWNER’S, SERVICE & PARTS MANUAL For additional information, please see us at www.badboymowers.com Bad Boy, Inc. 102 Industrial Drive Batesville, Arkansas 72501 ©2016 11-28...
- Page 2 ..........Bad Boy Safety Guidelines...
- Page 3 This manual applies to the following equipment: Bad Boy MZ MAGNUM 54 MZ Magnum 54˝ KT740 Kohler COMMONLY USED ITEMS AND PART NUMBERS PAGE 3...
- Page 4 40 CFR 1060 within the first two years Bad Boy Inc. will replace the defective component. Your evaporative emission control system may include parts such as fuel tanks, fuel lines, carbon canisters, fuel caps, valves, vapor hoses, clamps, or connectors.
- Page 5 SECTION 2: MOWER SAFETY GUIDELINES Never allow untrained people to operate this machine. It is the owner’s responsibility to get training and see to it that anyone who has permission to use your machine receives the proper training. Do not mow around people. The factory discharge chute is designed to deflect debris downward, but it could be possible for debris to be thrown in a way that can cause damage to people or property.
- Page 6 SETTING DECK HEIGHT 2.22 If your machine is equipped with an actuator motor, raise the deck using the raise /lower switch. Refer to section 7 (Controls). When deck is raised, set desired height with the deck height control dial, then lower deck with the raise / lower switch. 2.23 If your machine is equipped with a foot pedal, press foot pedal to raise deck, select your desired deck height with the deck height dial, then slowly release foot pedal.
- Page 7 TOWING 2.42 Tow only with a machine that has a hitch specifically designed for towing. Do not attach towed equipment except at the hitch point. 2.43 Follow the manufacturer’s recommendation for weight limits for towed equipment and towing on slopes. 2.44 Never allow children or others in or on towed equipment.
- Page 8 SAFETY INTERLOCK SYSTEM Your Bad Boy mower is equipped with a safety interlock system. This system is designed to prevent serious injury or death to the operator and other people or property damage. The system consists of an operator presence switch in the seat, the parking brake, drive lever neutral position, the mower blade engagement switch, and the ignition switch.
- Page 9 The machine could lose traction on a decline or tip backwards on an incline. 3.14 Once you become comfortable with your Bad Boy Mower you will notice your overall mowing time will decrease.
- Page 10 SECTION 4: MOWER MAINTENANCE SECTION 5: MOWER STORAGE & TRANSPORTATION Keep machine from collecting debris by storing in a covered area while not in use. 5.2 Fuel can harm your machine if left for more than 30 days without changing, especially if the fuel contains ethanol.
- Page 11 MAINTENANCE LOG Date: Hours: Performed: Performed : Date: Hours: Date: Hours: Performed: Performed : Date: Hours: Performed : Date: Hours: Date: Hours: Performed: Performed : Date: Hours: Date: Hours: Performed: Date: Hours: Performed : Performed : Date: Hours: Performed: Date: Hours: Date: Hours:...
- Page 12 SECTION 6: TROUBLESHOOTING Q: How do I prevent an uneven cutting pattern and increase the quality of cut? A: Check tire pressure, check blade sharpness (replace blades or sharpen at least once per year or when needed), make sure blades are tightened properly, check spring and belt tension, check the underside of the deck to ensure the mower deck is free of grass build-up and debris, make sure your machine is at full throttle, and vary your mowing pattern each time you cut your grass.
- Page 13 SECTION 7: CONTROLS Bad Boy mowers have a three position ignition switch: off, run, and start. Ignition Switch— With key inserted, rotate it clockwise to START position and release key when engine starts, and switch will automatically return to the RUN position.
- Page 14 By pulling the arms out, the mower can be put in a neutral position. Return the arms to the “forward position” for normal operation. Your Bad Boy Mower Weighs: MZ MAGNUM SERIES: 585—602 lbs *** Weights fluctuate with the addition of accessories.
- Page 15 SECTION 10: MOWER BLADE MAINTENANCE 10.1 Check mower blades after each use. This is essential for maintaining well-groomed turf. Keep the blades sharp. If a dull blade is used for cutting, the grass will tear rather than cut. This could damage the grass leaving a brown frayed top on the grass within a few hours. A dull blade will also require more power from the engine.
- Page 16 HOW TO CHOOSE THE RIGHT BLADE Essentially there are only TWO basic styles of mowing blades used or approved for use on our current products: 1) The standard style of mowing blade is essentially designed for cutting grass and effectively discharging the clippings out from the deck to fall onto the lawn or to be captured in a grass collection system.
- Page 17 MOWING TIPS: • Mow header strips at the ends of the lawn and around flower beds first. Make them wide enough that you can turn the mower around in the already mown section. Then mow back and forth between these header strips overlapping each lap by about 1/8 the width of the mower’s deck.
- Page 18 SERVICE SECTION SECTION 1: HYDROSTATIC SYSTEM The hydrostatic system on MZ models is a sealed lifetime transaxle system, so no maintenance is required. Under the rear of the mower, you will find the two levers shown in the image. These bypass levers serve as a neutral for moving the mower while the engine is not running.
- Page 19 SECTION 2: DRIVE BELT Shown to the right is the MZ pump belt tensioner. Tightening the two 3/4" jam nuts on the right side will increase the belt tension. The tension should be adjusted so that there is between 60 to 65 lbs. of tension on the belt. This can be checked with a belt tension gauge as shown to the right.
- Page 20 8 hrs of use, and at intervals of 50 usage hours or yearly, whichever occurs first after that. The oil capacity is 2 quarts. Bad Boy 10W-30 synthetic blend engine oil is recommended for maximum protection. 3.1 Changing your engine oil and oil filter 1) Remove oil dipstick and open oil drain.
- Page 21 6) Fill crankcase with approximately 2 reach quarts of new oil. Level should top of indicator on dipstick. 7) Reinstall oil filter dipstick and tighten securely. 8) Start engine; check for oil leaks. Stop Engine; correct oil leaks. Recheck oil level.
- Page 22 3.2 Changing your fuel filter: 1) Locate your fuel filter and mark the direction it is facing. 2) Clamp each side of the fuel filter to minimize any gas spills. 3) Remove the clips from each side of the fuel filter and remove the fuel filter.
- Page 23 3.3 Changing the air cleaner: 1) U nlock the air cleaner cover and remove to access the air cleaner. 2) R emove the paper element and precleaner. 3) R eplace or wash precleaner in warm water with detergent. Rinse and allow to air dry. 4) L ightly oil precleaner with new engine oil;...
- Page 24 "by pass" a fuse in any way. Doing so creates a significant fire hazard and can cause severe damage to the mower's electrical components. If a fuse is repeatedly blowing, contact your Bad Boy dealer. PAGE 24...
- Page 25 On most models, the red wire coming out of the engine is the charging wire from the alternator. Check for 13.6 - 14.2 volts dc at this wire with engine at full throttle. Check the condition and connection of the relays Parking Brake Relay located under the control panel.
- Page 26 PAGE 26...
- Page 27 SECTION 5: FRAME The front fork nuts require a torque of 40ft-lbs. While 40 ft lbs. applying this torque, turn the fork itself to ensure no damage is done to the bearing. This operation is only necessary if a repair requires it. To access the recessed front fork nuts, remove the dust cap by prying gently using a flat-head screwdriver.
- Page 28 SECTION 6: CUTTING DECK Deck belt removal: 1) Remove ignition key. Remove Pulley Cover 2) Raise the deck to its highest position. 3) Remove the right pulley cover. 4) While lifting up on the belt (as shown in the photograph), rotate the pulley until the belt is free of the pulley.
- Page 29 Leveling the Deck: Start on a flat, level surface and set the air pressure in all four tires to 12 psi. Loosen the four bottom deck hanger bolts using a 9/16” wrench. Using the deck adjustment foot assist pedal, raise the deck as high as it will go.
- Page 30 The blade on the top (see photo) was utilized long after replacement was required. In addition to a decline in cut Quality, failure to replace a worn or damaged blade creates a major safety hazard. Bad Boy recommends that blade sharpening be performed by a professional. PAGE 30...
- Page 31 Blade Removal: To change blades, it may be easier to use a piece of wood to keep the blade from turning so that the bolt can be loosened. Use a 15/16" socket and impact drill, or a wrench and an extension to gain more leverage.
- Page 32 Parts List ITEM PART NUMBER DESCRIPTION 013-8050-00 1/2-13 Nylon Flange Nut 010-1050-00 Caster Bearing 2016 - 1641 Bearing 023-0002-00 2017 MZ Front fork 022-7009-00 Wheel Bearing 013-9004-00 1" Fine Thread Nut 018-0035-00 1/2 -13 x 7.5 Hex Bolt Grade 5 025-0003-00 2016 Front Bearing Spacer 018-0005-00...
- Page 33 PAGE...
- Page 34 Parts List ITEM PART NUMBER DESCRIPTION 019-8051-00 5/16" Lock Washer 018-8063-00 5/16" x 3/4" Hex Bolt 019-5037-00 3/8" Lock Washer 013-5041-00 3/8 Nylock Nut 034-8025-00 Drive Lever Spring 019-8027-00 .515 ID Nylon Shoulder Washer 019-8054-00 .505 Nylon Spacer 024-6034-00 1/4 Drive-In Grease Fitting 099-2009-00 3/8-24 Quick Release Ball Joint 035-5450-00...
- Page 35 MZ Gas Tank Assembly DETAIL A PAGE...
- Page 36 Parts List ITEM PART NUMBER DESCRIPTION 067-2080-50 2017 MZ Right Gas Tank 067-2090-50 2017 MZ Left Gas Tank 019-8051-00 5/16" Lock Washer 018-2010-00 10-32 x 3/8" Button Socket Head Bolt 086-3050-17 Universal Wire Harness 077-8076-00 Ignition Switch 042-9000-00 Ignition Key 083-4013-00 Tachometer (MZ Magnum only) 018-1040-00...
- Page 37 MZ Frame Top Assembly DETAIL A DETAIL B PAGE...
- Page 38 Parts List ITEM PART NUMBER DESCRIPTION 014-3317-00 2017 MZ Cooler Cover 019-8040-00 1/4" x 3/4" Carriage Bolt 030-3050-00 #10 x 1/2" Self Tapping Screw 029-4010-00 Button Bumper 079-3417-00 MZ/ZT 2017 Floorboard 030-7042-00 5/16 x 3/4 washer head type F screw 081-4000-00 2017 MZ/ZT Floor Mat 026-2017-00...
- Page 39 PAGE...
- Page 40 MZ Frame Bottom PAGE...
- Page 41 Parts List ITEM PART NUMBER DESCRIPTION 013-5202-00 3/8 Nylock Flange Nut 013-5301-00 5/8" Nylock (1/2 Jam) 013-6014-00 3/8-16 Hex Nut Zinc 013-6051-00 3/8" Fine Threaded Jam Nut 013-7018-00 1/2" Hex Nut 013-8049-00 5/16" Nylon Flange Nut 017-9077-00 Pillow Block MZ male 017-9078-00 Pillow Block MZ female 018-0028-00...
- Page 42 MZ Transaxle DETAIL A PAGE...
- Page 43 Parts List ITEM PART NUMBER DESCRIPTION 013-8073-00 1/4 Nylock Nut 022-8050-00 18x9.50-8 48 and 54 mz only 013-8049-00 5/16" Nylon Flange Nut 077-8073-00 Safety Switch 019-8044-00 5/16" Flat Washer 050-4070-00 2017 MZ Right Transaxle 050-4071-00 2017 MZ Left Transaxle 013-3000-00 Acorn Lug Nut 025-0070-00 2017 Transaxle Spacer...
- Page 44 Kohler KT-725 & KT-740 Parts List ITEM PART NUMBER DESCRIPTION 015-2014-00 Kohler MZ Magnum 740cc 041-6400-00 Pump Belt 033-2010-00 3-3/4" Motor Pulley 042-6030-00 1/4" X 1" Key 018-107 5-00 3/8 X 1 1/8 bolt 064-0030-00 Ground Cable 103-5400-00 Black Boot For Ground Cable 057-5900-00 2017 MZ Clutch Stop 018-6049-00...
- Page 45 MZ 54" Deck �-- PAGE...
- Page 46 ITEM PART NUMBER DESCRIPTION 060-2417-00 2017 MZ 54" Deck 037-2000-00 Spindle 042-0010-00 3/16 x 1 Square Key 018-6020-00 5/8" x 1 1/2" Grade 8 Hex Bolt (Fine) 018-6019-00 1/2"-20 x 1 1/2 - Grade 5 Fine Thread Bolt 013-6014-00 3/8" Hex Nut 018-5040-00 3/8"...
- Page 47 037-2000-00 Spindle Assembly Parts List ITEM QTY PART NUMBER DESCRIPTION 037-6027-00 Spindle Housing 037-6028-00 Spindle Spacer-Component 037-6025-00 Spindle Shaft 037-6024-00 Spindle Bearing PAGE...
- Page 48 PAGE...
- Page 49 NOTES: __________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ PAGE...
- Page 50 1. WHAT THIS WARRANTY COVERS, AND FOR HOW LONG: Bad Boy, Inc. will, at its option, repair or replace, without charge, any part covered by the warranty which is found to be defective in material and/or workmanship for two (2) years or (200) hours* after the date of sale to the original retail purchaser unless the product is used for commercial, industrial, or rental purposes, in which case the Bad Boy MZ mower will carry no warranty, whatsoever.
- Page 51 Bad Boy, Inc. 102 Industrial Drive Batesville, AR 72501 www.badboymowers.com Technical Support: ............techsupport@badboymowers.com Warranty: ..................warranty@badboymowers.com Parts: ....................partsdept@badboymowers.com WARRANTY REGISTRATION Ensure selling dealership has registered mower within 30 days of purchase to validate warranty. Please record your serial number, date of purchase and dealership information for your records.
- Page 52 MAGNUM MODEL For additional information, please see us at www.badboymowers.com Bad Boy, Inc. 102 Industrial Drive Batesville, Arkansas 72501...
