Maintenance Instructions
C23i
Cleaning
62
Cylinder Head Cooling Fins
It is essential for performance and longevity of the
air-cooled engine to keep the cylinder head cooling
fins clean and free of obstruction. After
every 8
hours
of operation, check the performance of the
cooling system by starting the engine, holding a
hand adjacent to the cylinder head, and feeling the
cooling airflow. If there is little or no airflow, clean
the cooling fins as follows:
DANGER
Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking airflow.
Check for Airflow
with Hand
Cylinder Head
(Not Visible)
Check Cooling System Airflow
Every 100 hours,
inspect and clean the cooling
fins (more often when operating in extremely dusty,
dirty conditions). Remove the two (2) cooling fin
access panels in the engine shroud and clean the
cooling fins and external surfaces using com-
pressed air. Make sure to reinstall the access
panels before oper ating the engine.
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 resulting
in engine overheating.
NOTE:
If dirt is packed into the cooling fins it may
be necessary to remove the engine shroud in order
to thoroughly clean the cooling fins.
IMPORTANT:
Yearly, it is good maintenance prac-
tice to remove the engine cooling shroud and clean
the cylinder head cooling fins and cooling fan
thoroughly to prevent overheating and extend
engine life. Make sure cooling shroud is reinstalled
properly. This procedure will require removing the
engine from the chassis.
Engine Cooling
Fin Access Panels
Rotating Engine Cooling
Air Intake Screen
Kohler Engine
Shroud
Keep Rotating Cooling Air Intake
Screen and Cooling Fins Clean