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Engine cooling system, Air intake screen, Engine air intake screen – Walker MS (13 HP) User Manual

Page 54: Cylinder head cooling fins, Cooling system airflow, Maintenance instructions

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Maintenance Instructions

CLEANING

50

IMPORTANT: Service the fuel filter screen only in a
clean area where the fuel filter components will not
be contaminated by any dust and dirt.

1. Close the fuel shut-off valve.

2. Loosen sediment bowl and remove filter screen

and gasket. Replace filter screen, if damaged
(use only Kawasaki replacement filter #49019-
2095).

3. Remove any sediment, wipe clean and reinstall

assembly.

4. Open the fuel shut-off valve.

Engine Cooling System

Air Intake Screen

To prevent engine overheating and possible engine
damage, clean grass clippings, chaff, and dirt from
the rotating engine air intake screen after every 8
hours
of operation. In certain mowing conditions
(dry grass, leaves, tree “cotton”, etc.) it may be nec-
essary to check and clean this area several times
each day to prevent engine overheating.

Engine Air Intake Screen

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:

NOTE: The planned maintenance schedule calls
for cleaning the cylinder head cooling fins yearly or
every 300 hours
as a minimum.

Cooling System Airflow

DANGER

Gasoline is extremely flammable and can
be highly explosive. To minimize danger:

Use an approved fuel container for gas-

oline.

DO NOT allow open flames or sparks

while performing maintenance or refuel-
ing; DO NOT smoke while working with
fuel.

Wipe up spilled gasoline immediately

and completely.

CAUTION

Operating the engine with a blocked air
intake screen, dirty or plugged cooling
fins, and/or cooling shrouds removed will
cause engine damage from overheating.

DANGER

Make sure to keep hands clear of exhaust
pipe, muffler, and moving parts when
checking airflow.

Rotating

Engine Air

Intake Screen

Check for Airflow

Cylinder Head

Shroud