Walker MC (20 HP) - Manual (Page 59)

Maintenance Instructions
CLEANING
55
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 described below.
DANGER
Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking 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-
erating the engine.
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.
Engine Cooling
Fin Access Panels
Kohler Engine
Shroud
Engine Air
Intake Screen
Engine Air Intake Screen and
Cooling Fin Access Panels
Check Airflow
with Hand
Cooling System Airflow
Grass Buildup in Mower Housing
DANGER
Before raising or removing the mower
deck for cleaning, stop the engine, re move
the ignition key, and disconnect the spark
plug wires.
1. Raise the deck lock lever handle on each side
of the carrier frame and pull out to release car-
rier frame for tilting action.
2. Using the carrier frame lift handle, raise deck to
the TILT-UP position and insert the deck hook
into the tilt-up latch on the tractor body.
Tilt-Up Hook
Deck
Tilt-Up Latch
Tilt-Up Latch
Deck Lock Lever
Tilt-Up Lift Handle
Deck Secured in TILT-UP Position