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Maintenance Instructions
KOHLER TIPS
IMPORTANT TIPS FOR CARE OF THE KOHLER
ENGINE
Fuel System
● Fuel must be clean free from water, dirt, and
or
ganic material.
● Change fuel filter on a regular basis and when
con
tamination is suspected or found in the fuel.
● The fuel injection pump module is a sealed unit
and is not serviceable; opening the fuel pump
module will void the warranty. Additionally, the
fuel pump module and the fuel lines between it
and the injectors are pressurized. For service
of the pressurized fuel injection system includ
ing the fuel pump module, fuel lines, and fuel
injectors, contact your Walker dealer or autho
rized Kohler service dealer.
Starting/Stopping
● Start engine with the throttle advanced off idle
to a midpoint (1/4 to 1/2) throttle setting. This
will aid starting, especially in cold weather.
● Keep the battery fully charged.
● Match crankcase oil viscosity to the ambient
tem perature, allowing the engine to crank faster
and start easier.
● Allow engine to run at idle for a few seconds
before stopping engine to avoid runon or back
firing
.
Cooling System
CAUTION
DO NOT use water or a pressure washer to
clean the cooling system on an air-cooled
engine; mud may form under the cooling
shroud on the cylinder head and cooling
fan resulting in engine overheating.
● Keep engine air intake screen and cylinder head
fins free of grass clippings, chaff, and dirt. In
spect intake screen and cooling fins for cleanli
ness and no damage.
● Periodically remove two access panels in the
en
gine shroud to inspect and clean cylinder
head cool ing fins.
● Check performance of the cooling system by
starting the engine, holding a hand adjacent to
the cylinder head, and feeling the cooling air
flow.
DANGER
Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking airflow.
● Operate the engine at full speed when mowing.
This allows the engine to produce full horse
power and move more cooling air through the
engine cool ing fins.
Air Cleaner System
● Use
only
Cummins/Fleetguard air cleaner
ele
ments. Aftermarket elements may not seal in
the air cleaner housing, allowing dirt to enter the
engine. Also, aftermarket filters often skimp on
the filtration media and require more frequent
replacement (see following instructions).
● Use the air filter restriction gauge to indicate the
need to service the air filter.
● Do frequently check the
Turbine Precleaner
for
free movement of the internal fan.
●
DO NOT overservice or frequently “disturb”
the
air filter.
A dirty air filter actually cleans bet
ter than a new one. Changing and cleaning the
air filter too often can ac tually reduce filter effi
ciency and increase the oppor tunity for traces of
dust to enter the engine. Wait until the element
really needs servicing as indicated by the air fil
ter restriction gauge.
● When the air filter element is removed or re
placed,
make sure all
dust is cleaned out
of the
air cleaner housing and hose.
Use a damp
cloth and wipe the interior of the canister and
hose clean (a lit tle dirt left here will be sucked
into the engine and reduce engine life). When
the filter is reinstalled, make sure the
element
is held tight and straight
in the canister for
proper seating and sealing.
● Periodically check the air intake hose for cuts,
nicks, etc., and the hose clamps for tightness.
Oil
● Use only multiviscosity oils as specified with the
viscosity matching ambient temperatures for the
en gine operating conditions. This will
aid start-
ing
in cold weather and assure proper lubrica
tion in hot weather.
● Use only Kohler oil filters.
Aftermarket filters
may not seal properly
and/or have the incor
rect pressure relief valve for proper lubrication.
