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2.71

  Always maintain the correct tire pressure. Do not inflate the tires above the recommended pressure. Never weld or heat a wheel 

and tire assembly. The heat can cause an increase in air pressure resulting in a tire explosion. Welding can structurally weaken 

2.72

  Park machine on level ground. Never allow untrained personnel to service machine. Understand service procedure before 

doing work.

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.
These interlocks are vitally important and must be tested frequently. Following are instructions to test these very important safety 
precautions. 

Note: the operator must be seated properly on the machine during these tests and the engine should 

have been previously allowed to warm to operating temperature.

2.74

  With the parking brake engaged, bring lever arms to their inward position

 

A

ttempt to start the machine 

with 

the blade actuator in 

off position

T

he engine should not start.

2.75

  On a level surface, disengage the parking brake and place lever arms to their outward position

T

hen

,

 attempt to start the 

machine 

with

 

the blade actuator in off position

T

he engine should not start.

2.76

  Engage parking brake and leave lever arms in outward position

P

ut blade actuator in the on position, then attempt to start the 

machine

T

he engine should not start.

2.77

  Next, start the engine as stated in the Mower Operation Section

D

isengage parking brake

 

and

,

 Very Slowly

,

 begin to rise from 

the seat

.

 

T

he engine should stop.

If any of these tests fail to produce the results indicated and the problem cannot be identified, contact your Bad Boy Mower 
dealer or the support contacts in the rear of this manual.

PAGE  8

2.62

  Keep the entire machine free of grass, leaves, or other debris build up. Clean up oil or fuel spillage and remove any fuel soaked 

debris. Failure to do so can affect the safety and functionality of the machine, as well as increase the danger of a fire due to 
contact with the hot surfaces of the machine.

2.63

  Allow machine to cool before storing.

2.64

  If you strike something with the mower, turn the mower and blades off, engage the parking brake, and inspect the machine for 

damage. Repair, if necessary, before resuming.

2.65

  Never make any adjustments or repairs with the engine running.

2.66

  Check grass catcher components and the discharge guard frequently and replace with manufacturer’s recommended parts, 

when necessary. 

2.67

  Mower blades are sharp. Wrap the blade or wear gloves before servicing them. 

2.68

  Check parking brake operation frequently. Adjust and service as required.

2.69

  Maintain or replace safety and instruction labels, as necessary.

2.70

  Do not attempt to mount a tire without the proper equipment and experience to perform the job.

or deform the wheel.

2.73   Mower deck, frame, and engine compartment should remain free of debris to prevent premature parts failures

 or fire hazards.

Summary of Contents for MZ Magnum 54

Page 1: ...For additional information please see us at www badboymowers com Bad Boy Inc 102 Industrial Drive Batesville Arkansas 72501 2016 11 28 MZ MAGNUM 54 ZERO TURN MOWER OWNER S SERVICE PARTS MANUAL...

Page 2: ...rumentation Mower Blade Maintenance Greasing Bearings How To Choose the Right Blade Mowing Tips Service Section Parts Section Limited Warranty Page 4 Page 5 Page 9 Page 10 Page 10 Page 12 Page 13 Page...

Page 3: ...PAGE 3 Thismanualappliestothefollowingequipment BadBoyMZ MAGNUM 54 MZ Magnum 54 KT740 Kohler COMMONLY USED ITEMS AND PART NUMBERS...

Page 4: ...lable through your local Bad Boy Mower Dealer Remember to always provide the following information when ordering parts 1 Correct part number 2 Correct serial number All warranty repair and service mus...

Page 5: ...nd behind before and while backing 2 9 Never direct discharged material toward anyone Avoid discharging material against a wall or obstruction as material may ricochet back toward the operator Stop th...

Page 6: ...here you last saw them 2 35 Keep children out of the mowing area and in the watchful care of a responsible adult other that the operator 2 36 Maintain alertness and turn machine off if a child enters...

Page 7: ...or container opening at all times until the fueling is complete Do not use a nozzle lock open device 2 56 If fuel is spilled on clothing change clothing immediately 2 57 Never overfill fuel tank Repla...

Page 8: ...lever arms in outward position Put blade actuator in the on position then attempt to start the machine The engine should not start 2 77 Next start the engine as stated in the Mower Operation Section...

Page 9: ...recently engage the choke 3 6 Make sure nothing is under or around machine 3 7 Place key in ignition and turn 3 8 Once machine is started disengage the choke 3 9 Increase RPM by sliding the throttle...

Page 10: ...e will be stored for more than 30 days 5 4 Always secure machine properly when transporting machine 5 5 Do not load machine on trailer with blades engaged 5 6 Do not use ramps to load the machine 5 7...

Page 11: ...ormed Performed Performed Performed Performed Performed Performed Performed Performed Date Hours Date Hours Date Hours Date Hours Date Hours Date Hours Date Hours Date Hours Date Hours Date Hours Date...

Page 12: ...gage 6 3 A Make sure the safety switch is plugged in on the bottom of seat Check the underside of the PTO engager to ensure the plug is secure at switch Also check PTO fuse underneath operator console...

Page 13: ...wn The choke control located to the right of the operator s left is a push pull type When the choke knob is pushed in the choke is in the off run position When the choke is pulled out it is in the on...

Page 14: ...Your Bad Boy Mower Weighs MZ MAGNUM SERIES 585 602 lbs Weights fluctuate with the addition of accessories 8 3 As you can see by the weights of the machines you shouldn t ever try to push or pull a Ba...

Page 15: ...7 ALWAYS check for blade damage if mower strikes rocks branches or other objects that could potentially damage the blade REMEMBER NEVER CHECK BLADE WHILE ENGINE IS ON NEVER CHECK BLADES WHILE BLADES A...

Page 16: ...re specific purpose If you re experiencing less than desired cutting or discharging performance with a 3 1 blade you may want to check into using a 2 1 blade Conversely if you re using a 2 1 blade and...

Page 17: ...owing season Keep several blades around so you ll always have a sharp one on hand Sharp blades cut the grass cleanly and help mulch clippings into small pieces which break down quickly Don t forget to...

Page 18: ...se bypass levers serve as a neutral for moving the mower while the engine is not running Pull the levers out and lock them into place to activate the bypass When adjusting the tracking on the mower th...

Page 19: ...mp 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...

Page 20: ...ain Allow oil to completely drain Make sure to have an oil pan ready to capture old oil and properly dispose old oil 2 Clean area around oil filter Place a container under the oil filter to capture an...

Page 21: ...is located in the fuel line about 12 from the carburetor on the side of the engine Replace the filter yearly Prior to the removal of the old filter note the direction of fuel flow as indicated on the...

Page 22: ...air cleaner s effectiveness Replace yearly more often in dusty environments Adhering to these practices will help prevent loss of power and premature engine failure 3 2 Changing your fuel filter 1 Lo...

Page 23: ...ing the spark plugs and checking the spark plug gap 3 3 Changing the air cleaner 1 In order to access the spark plugs you will need to remove the rear engine cover This can be accomplished by removing...

Page 24: ...ill need to take off the control panel by removing four socket head screws using a 1 8 hex wrench This can be seen in the images on the right Once you remove the screws remove the control panel and yo...

Page 25: ...he condition and connection of the relays located under the control panel Ensure that they are clean and connected Make sure that wire terminal ends have not been pushed out of the relay block If you...

Page 26: ...PAGE 26...

Page 27: ...the bottom nut with a 1 1 2 wrench Once you have torqued the nuts to 40 ft lbs reapply the dust cap by gently tapping around its edges Do NOT hit center of cap Torque rear wheel lugs to 65 75ft lbs R...

Page 28: ...the belt onto the clutch in the rear of the engine 4 Verify that the belt is routed properly as improper routing can damage the spindles as well as the engine PAGE 28 Remove Pulley Cover Belt Route 1...

Page 29: ...he deck AND are away from deck wheels Place a spacer on each 2x4 under the REAR of the deck to obtain proper pitch 4 With the deck still raised turn the height adjustment knob to 3 5 and lower deck on...

Page 30: ...he slot of the deck Belt tension should be 60 65 lbs for the 54 deck with the deck at its lowest setting Use a belt tension gauge to ensure the proper tension Your dealer or service center will have a...

Page 31: ...ill or a wrench and an extension to gain more leverage You might need to put a 3 4 wrench on top of the pulley bolt to keep the blade from spinning Bolts used have right handed threads Re torque the b...

Page 32: ...earing 022 7009 00 2 4 1 Fine Thread Nut 013 9004 00 1 5 1 2 13 x 7 5 Hex Bolt Grade 5 018 0035 00 1 6 2016 Front Bearing Spacer 025 0003 00 1 7 1 14 x 5 Hex Bolt Grade 8 Zinc Yellow 018 0005 00 1 8 F...

Page 33: ...PAGE 33...

Page 34: ...cal Rod End Outlaw 12 6 013 6051 00 3 8 Fine Threaded Jam Nut 13 2 018 5040 00 3 8 x 1 1 4 Hex Bolt 14 4 018 2020 00 5 16 18 1 2 HWH Bolt Steering 15 2 069 4007 00 Rubber Grip 16 2 013 0085 00 1 2 13...

Page 35: ...PAGE 35 DETAIL A A 23 13 14 14 17 3 18 17 3 18 2 29 31 28 12 38 1 30 5 21 4 39 8 9 9 6 7 20 19 10 36 18 3 17 17 3 18 15 16 22 35 37 34 33 32 11 28 25 24 25 27 26 MZ Gas Tank Assembly...

Page 36: ...Washer 019 8044 00 7 17 5 16 x 1 Bolt 018 2007 00 7 18 10 24 x 5 8 Button Head Bolt 018 5200 00 2 19 10 24 Nylon Insert Locknut 013 5019 00 2 20 PTO Switch 056 8058 00 1 21 2x2 Square Plug 014 9000 00...

Page 37: ...PAGE 37 DETAIL A DETAIL B A B 17 17 7 5 20 2 40 3 4 6 1 6 14 36 19 18 37 20 9 8 24 35 34 33 11 15 16 12 10 39 32 MZ Frame Top Assembly 25 27 28 30 31 31 22 31 29 24 13 24 23 26 13 24 28 27 21 38...

Page 38: ...6 5 8 Christmas Tree Fastener 040 6090 00 12 17 MZ Brake Cable 064 8057 17 1 18 10 24 Nylon Insert Locknut 013 5019 00 2 19 360ID Plastic Washer 019 6042 00 4 20 Battery 068 8049 00 1 21 Ground Cable...

Page 39: ...PAGE 39...

Page 40: ...PAGE 40 28 11 11 35 1 7 8 9 7 1 8 9 22 23 35 4 16 15 21 24 25 5 34 33 32 26 5 10 30 31 17 12 17 2 19 29 13 1 1 18 17 17 14 20 6 27 11 3 15 11 34 MZ Frame Bottom 1...

Page 41: ...asher 019 5029 00 3 15 3 8 Lock Washer 019 5037 00 1 16 630 ID Plastic Washer 019 6017 00 4 17 5 8 Split Collar 025 0002 00 1 18 1 2 Set Collar W Set Screw 025 7036 00 1 19 2017 MZ ZT Shallow Foot Ped...

Page 42: ...PAGE 42 DETAIL A A 8 24 23 22 5 3 3 5 19 16 10 16 21 5 9 3 14 14 12 20 1 1 13 17 18 15 4 1 11 6 7 2 25 30 31 26 27 28 29 MZ Transaxle...

Page 43: ...12 1 4 x 3 4 Hex Bolt 018 8052 00 1 13 1 4 20 x2 1 2 Gr2 hex C s zinc 018 1076 00 2 14 10 24 X 5 8 Button Head Bolt 018 5200 00 2 15 3 8 x2 Hex Bolt 018 3000 00 2 16 2017 MZ Brake Cable 064 8057 17 1...

Page 44: ...24 1 063 5400 00 25 1 063 6000 00 26 1 015 2015 00 Parts List DESCRIPTION Kohler MZ Magnum 740cc Pump Belt 3 3 4 Motor Pulley 1 4 X 1 Key 3 8 X 1 1 8 bolt Ground Cable Black Boot For Ground Cable 2017...

Page 45: ...MZ 54 Deck A PAGE 45...

Page 46: ...050 00 1 2 x 2 Carriage Bolt 25 1 019 0007 00 517 Square Hole Round Washer 26 3 033 7201 25 5 3 4 Idler Pulley Capitol Stampings 27 2 025 5338 00 Idler Pulley Standoff 28 4 039 2127 00 2017 MZ ZT Deck...

Page 47: ...1 1 2 1 3 1 4 2 037 2000 00 Spindle Assembly Parts List 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 48: ...PAGE 48...

Page 49: ...__________________________________________________________ _________________________________________________________________________ ___________________________________________________________________...

Page 50: ...TY LIMITATION A THERE IS NO OTHER EXPRESS WARRANTY ANY WARRANTY THAT MAY BE IMPLIED FROM THIS PURCHASE INCLUDING MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE IS HEREBY LIMITED TO THE DURATION...

Page 51: ...STRATION 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 Se...

Page 52: ...MZ MAGNUM MODEL For additional information please see us at www badboymowers com Bad Boy Inc 102 Industrial Drive Batesville Arkansas 72501...

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