Operating Instructions

Hourmeter

The hourmeter, which is located on the instrument panel, displays operating time accumulated while the ignition switch is in the ON position.

The hourmeter provides maintenance reminders after certain hours of operation. The hourmeter screen will start flashing the reminder one hour prior to the recommended interval and will continue until one hour after the recommended interval (two hours). The hourmeter does not have a manual reset function.

Procedure

Interval*

Reminder

 

 

 

 

Oil Change

4-6 Hours

C

OIL

(Break-In)**

H

 

G

 

 

 

 

 

Lubricate

 

 

LUBE

and Check

24-26 Hours

 

Levels

 

 

 

 

 

 

 

Oil Change

49-51 Hours***

C

OIL

 

H

 

 

G

 

 

 

 

 

*These intervals reflect the actual time that the reminder will flash (one hour prior to and one hour after the recommended interval).

**This reminder is only used one time.

***In normal operating conditions, oil changes in 100-hour intervals are acceptable. Walker and the engine manufacturers recommend engine oil changes every 50 hours in extremely dirty or dusty conditions or for units with less than 100 hours annual use.

NOTE: The blinking hour glass on the display means that the meter is operating properly.

Hourmeter

Voltmeter

The voltmeter displays battery and charging system voltage. An indication of low or high voltage (the red area) indicates an electrical system failure. The cause of the failure should be determined and cor- rected.

Oil Pressure Warning Light

The oil pressure warning light indicates that engine oil pressure is below the safe operating level [below 3 to 5 PSI (21 to 34 kPa)]. This light (and warning horn) will come on when the ignition is turned ON, but should go off after the engine is started. If the light fails to come on when the ignition switch is turned ON, it could indicate a burned out bulb. If the light comes on during engine operation, stop the engine immediately and correct the source of the problem before further engine operation.

IMPORTANT: Continued operation of the engine with an illuminated oil pressure warning light MAY cause severe engine damage (if a low oil pressure condition exists).

Over Temperature Warning Light

(Model MT and MTEFI Only)

The over temperature warning light indicates that engine oil temperature and/or cylinder head temperature are above the safe operating limit and the engine is overheating [above 305° F (152° C) oil or 450° F (232° C) cylinder head]. If this light comes on, there may be a problem with:

∙Engine cooling system (material packed into cyl- inder head cooling fins, clogged air intake screen)

∙Low oil level in crankcase

Stop the engine and correct the source of the problem before further operation.

IMPORTANT: Continued operation of the engine with an illuminated over temperature warning light MAY cause severe engine damage (if a high oil temperature or head temperature condition exists).

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