Bad Boy MZ 42 Owner's, Service & Parts Manual page 22

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 recommended for
maximum protection.
3.1 Changing your engine oil and oil filter
1) Remove oil dipstick and open oil drain.
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 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.
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