56
Maintenance Instructions
CLEANING
Rotating Engine Cooling
Air Intake Screen
Keep Rotating Engine Cooling
Air Intake Screen Clean
Cylinder Head Cooling Fins
It is essential for performance and longevity of the
aircooled 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(s), 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 Airflow
with Hand
Cylinder
Head
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 compressed air.
Make sure to reinstall the access panels before op
er ating the engine.
CAUTION
DO NOT use a pressure washer to clean
the cooling system on an air-cooled en-
gine, mud may form under the cooling
shroud on the cylinder head and cooling
fan.
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.
Kohler Engine
Shroud
Rotating Engine Cooling
Air Intake Screen
Engine Cooling
Fin Access Panels
Rotating Engine Cooling Air Intake Screen
and Cooling Fin Access Panels
IMPORTANT:
Yearly, it is good maintenance prac
tice to remove the engine cooling shroud and clean
the cylinder head cooling fins thoroughly to prevent
overheating and extend engine life. Make sure cool
ing shroud is reinstalled properly. This procedure
will require removing the engine from the chassis.
