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- Bad Boy
- Lawn Mower
- MZ 42"
- Owner's, Service & Parts Manual
Bad Boy MZ 42" Owner's, Service & Parts Manual
Summary of MZ 42"
Page 1
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 ©2015 11-13 mz 42 models.
Page 2: Table of Contents
Table of contents basic information ..................................................................................... .......... Section 1 (pages 4) bad boy safety guidelines ............................................................................. Section 2 (pages 5–8) operation ..............
Page 3
This manual applies to the following equipment: bad boy mz series mz 42˝ 540cc briggs mz 42˝ kt725 kohler page 3 commonly used items and part numbers 42" mz blade hi-lift fusion 038-4221-00 gator blade 038-4222-00 42" mz deck belt 041-0120-00 mz pump belt 041-6400-00 oil filter briggs engine 540 cc ...
Page 4: Section 1:
Section 1: basic information congratulations on the purchase of your new bad boy mower! The purpose of this manual is to assist operators in maintaining and operating their machine. The information and instructions in this manual can help you attain years of performance from your new bad boy. Also, ...
Page 5: Section 2:
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 t...
Page 6: Slope Operation
Slope operation slopes are a major factor related to loss of control and tip over accidents, which can result in severe injury or death. Operation on all slopes requires extra caution. If you cannot back up the slope, or you feel uneasy on it, do not mow it. 2.22 mow up and down slopes, not across. ...
Page 7: Service:
Service: safe handling of gasoline to avoid personal injury or property damage, use extreme care in handling gasoline. Gasoline is extremely flammable and the vapors are explosive. 2.45 extinguish all cigarettes, cigars, pipes, and all other sources of ignition. 2.46 use only an approved gasoline co...
Page 8: Safety Interlock System
2.69 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 or deform the wheel. 2.70 park machine ...
Page 9: Section 3:
Section 3: mower operation never operate the machine with faulty equipment. Always be alert of sudden changes in landscape, as the mower will react differently on slopes or embankments than it will on flat surfaces. Never operate the mower with the discharge chute open. Do not cross terrain, other t...
Page 10: Section 4:
Section 4: mower maintenance section 5: mower storage & transportation 5.1 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. Never use fuel with mo...
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Page 11 performed: performed performed: performed performed performed: performed performed: performed performed performed: performed: performed performed performed performed performed: performed: performed: performed: performed: date: hours: date: hours: date: hours: date: hours: date: hours: date: ...
Page 12: Section 6:
Section 6: troubleshooting 6.1 q: how do i prevent an uneven cutting pattern and increase the quality of cut? 6.1 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, c...
Page 13: Section 7:
Section 7: controls 7.1 ignition switch—bad boy mowers have a three position ignition switch: off, run, and start. With key inserted, rotate it clockwise to start position and release key when engine starts, and switch will automatically return to he run position. 7.2 throttle control—a cable is con...
Page 14: Section 8:
Section 8: moving inoperable mower 8.1 do not tow machine. Use a winch to load on a trailer for transporting. 8.2 attention: return bypass valves to operating position before running mower following repairs. 8.3 mz models are equipped with two neutral engage/disengage arms, located at the rear of th...
Page 15: Section 10:
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...
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 la...
Page 17: Mowing Tips:
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. • don’t cu...
Page 18: Service Section
Service section section 1: hydrostatic system page 18 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 wh...
Page 19: Section 2: Drive Belt
Section 2: drive belt page 19 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 50 to 55 lbs. Of tension on the belt. This can be checked with a belt tension gau...
Page 20: Section 3: Engine
Section 3: engine page 20 540cc briggs this machine has an oil drain hose installed on the engine to allow for easier oil changes. Bad boy recommends that the oil and filter be changed at intervals of 50 usage hours or yearly, whichever occurs first. Consult your engine owner’s manual for exact oil ...
Page 21
Changing the spark plug: (1) in order to access the spark plug you will need to drop the rear engine cover. This can be done by removing the two carriage bolts in the rear with a ½” socket and drill or wrench. Then loosen the two on each side and the rear engine plate will swing down for easy access...
Page 22: Kohler Kt725
Kohler kt725 this machine has an oil drain hose installed on the engine to allow for easier oil changes. Bad boy recommends that the oil and filter be changed at intervals of 50 usage hours or yearly, whichever occurs first. The oil capacity is 2 quarts. Bad boy 10w-30 synthetic blend engine oil is ...
Page 23
6) fill crankcase with approximately 2 quarts of new oil. Level should top of indicator on dipstick. 7) reinstall oil fill/dipstick and tighten securely. 8) start engine; check for oil leaks. Stop engine; correct oil leaks. Recheck oil level 9) dispose of used oil and filter in accordance with local...
Page 24
The air cleaner is the engine’s only defense against damaging foreign particles. It is very important that the air cleaner element is inspected prior to each use. Remove the element and tap its sides in order to remove debris. Do not blow the filter out using compressed air. Doing so page 24 will gr...
Page 25
Page 25 3.4 changing the spark plugs and checking the spark plug gap: 1) in order to access the spark plugs you will need to remove the rear engine cover. This can be accomplished by removing the two carriage bolts using a 7/16” ratcheting wrench in the back as well as the two connecting the rear en...
Page 26: Section 4: Electrical System
Section 4: electrical system this mower is equipped with two protective fuses: a 25 amp main fuse (pictured to the right) and a 10 amp clutch fuse (blade engagement). The main fuse is located on the left side of the unit; towards the front of the engine. The clutch fuse is located just underneath th...
Page 27
Check the 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 are having issues starting your mower ensure the signal wire is connected to your starter ...
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Page 29: Section 5: Frame
Section 5: frame change. Oil change. Tension adjusa tymeearn.T bolt to its most rearward position in order to pro (3) raise vgidree athsee low fittings est be on lt t mz ensmioond epl os total sibl– e.8 the deck to its highest position. (4) remove either the right or left blade pulley cover. (5) whi...
Page 30
Section 6: cutting deck page 30 (1) remove ignition key. (2) lower the deck to its lowest position. (3) remove both the right and left blade pulley cover. Use a 7/16” socket or wrench to remove the bolts. Then lift and remove the pulley covers. (4) remove the belt on the left side blade pulley as fa...
Page 31
(4) ensure the belt is on every pulley and then place the belt on the bolt of the pulley on the left side and place pressure on it and roll the pulley to allow the belt to fall into place. (5) check to make sure the belt is on all the pulleys and matches the belt routing sticker. (6) place the pulle...
Page 32
If deck adjustments are necessary, the deck hanger bolts have adjustable slots. These adjusters affect the overall height of the deck and the level from left to right. The deck spring tension is critical. If the tension is too high, premature failure of the deck belt and blade spindles can occur. If...
Page 33
Blade sharpening: 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. Blade remov...
Page 34: Parts Section
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Notes: __________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ ____...
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Notes: __________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ _________________________________________________________________________ ____...
Page 54: 2016 Limited Warranty
2016 limited warranty for bad boy mz mowers 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...
Page 55: Warranty Registration
Bad boy, inc. 102 industrial drive batesville, ar 72501 www.Badboymowers.Com technical support: ............................................................Techsupport@badboymowers.Com warranty: .....................................................................................Warranty@badboymower...
Page 56: Model
Mz model for additional information, please see us at www.Badboymowers.Com bad boy, inc. 102 industrial drive batesville, arkansas 72501.