BBM OUTLAW WALK BEHIND MODEL ZERO-TURN MOWER. Manual - part 6

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21

SECTION 2: DRIVE BELT

Shown on the right is a typical pump belt tensioner for 
your model mower. This is how you can adjust the 
pump belt tension on your mower. There are two jam 
nuts on an all thread that need to be adjusted in 
ordered to change the tension in the spring. 

Use a ¾” wrench and a deep socket in order to loosen 
the two nuts. Tighten the outside nut if more belt 
tension is desired and loosen the outside nut if less belt 
tension is desired. 

The pump belt tension should be set between 60-65 
lbs. This should be measured with a belt tension 
gauge. Your dealer or service center will have a belt 
tension gauge or you can buy one (Part Number 
041-9999-00).

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SECTION 3: ENGINE

Kawasaki FS541V 

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 after the 
initial 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 using a

10mm socket or a flat head screwdriver until oil

begins flowing. Allow oil to completely drain.

(Make

sure to have an oil pan ready to capture old oil

and properly dispose old oil.)

2) The oil filter is located on the right side of the

engine. Clean area around oil filter. Place a

container under the oil filter to capture any oil

and remove

filter. Wipe off mounting surface and· reinstall

drain plug. Torque to 10 ft.*lb.

3) Place new filter in shallow pan with open end up.

Fill with new oil until oil· reaches the bottom of

the threads. Allow 2 minutes for oil to be

absorbed

by filter material.

4) Apply a thin film of clean oil to rubber gasket on

new filter.

5) Refer to instructions on oil filter for proper

installation.

6) Fill crankcase with approximately 2 quarts of

new oil. Level should be at 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 ordinances.·

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The fuel filter is located in the fuel line, on the left side of 
the engine, by the starter motor. Replace the filter 
yearly. Prior to the removal of the old filter, note the 
direction of fuel flow as indicated on the filter. Have 
towels readily available in order to quickly remove any 
fuel leakage.  Always use new hose clamps and ensure 
the security of the new filter by lightly pulling on each 
hose. Always perform maintenance outdoors or in a well 
ventilated area. Do not smoke or allow any open flames 
in the vicinity of any maintenance activities. 

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 and

gas spills.

3) Remove the clips from each side of the fuel filter

and remove the fuel filter.

4) Place the new fuel filter in the same direction as

the old and place clips back into place and
remove clamps.

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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 will greatly 
reduce the 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.

 

3.3 Changing the air cleaner: 

1)

Unlock the air cleaner cover and remove to

access the air cleaner.

2)

Remove the paper element and precleaner.

3)

Replace or wash precleaner in warm water

with detergent. Rinse and allow to air dry.

4)

Lightly oil precleaner with new engine oil;

squeeze out excess oil.

5)

Replace paper element and place precleaner

onto new paper element.

6)

Install onto base, replace cover,and lock into

place.