38
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 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 pres-
surized. For service of the pressurized fuel system
including the fuel pump module, fuel lines, and fuel
injectors contact your Walker dealer or authorized
Kohler service dealer.
Starting/Stopping
•
Start engine with the throttle advanced off idle
(1/4 to 1/2 throttle). 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 be fore
stopping engine to avoid run-on or backfiring.
Cooling System
CAUTION
DO NOT use 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.
•
Keep engine air intake screen and cylinder head
fins free of grass clippings, chaff, and dirt. Inspect
intake screen and cooling fins for cleanliness 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 start-
ing the engine, holding a hand adjacent to the cylinder
head, and feeling the cooling airflow.
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 horsepower and
move more cooling air through the engine cool ing fins.
Air Cleaner System
•
Use
only
Enginaire
TM
air cleaner elements.
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
(lo-
cated in the end cap of the air cleaner assembly) for
free movement of the internal fan. Shine light into end
cap to verify movement of fan with engine running.
•
DO NOT overservice
or frequently “disturb” the
air filter.
A dirty air filter actually cleans better than a
new one. Changing and cleaning the air filter too
often can ac tually reduce filter efficiency and increase
the oppor tunity for traces of dust to enter the engine.
Wait until the element really needs servicing as indi-
cated by the air filter 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.
Summary of Contents for B23i
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