Ford 231 Operator's Manual page 60

LUBRICATION AND MAINTENANCE
Figure 91
Air Cleaner Assembly
1. Air Cleaner Inlet Cap
Figure 90
Air Cleaner Element
1. Outer Air Cleaner Element
2. Inner Air Cleaner Element
3. Rubber Seals
IMPORTANT: Do not dry the element with com-
pressed air, as the air will rupture a wet element.
Also, do not install a wet element,as the tractor
engine will not start.
5.
Wash the inlet cap (1), Figure 91, with water and
blow dry with compressed air or allow to air dry.
6.
Install the element and inlet cap.
7.
Check and tighten all air induction connections
before resuming operation.
Washing the Primary Element: Wash the element after
five cleanings.
1. Remove the element (1), Figure 90.
2. Inspect the gaskets on the end of the element
for damage. If the gasket is damaged or missing,
install a new element.
3. Agitate the element in warm water containing a
small amount of non-sudsing detergent.
IMPORTANT: Do not use water hotter than the
hand can stand, as the element will be damaged.
Never wash the element with fuel oil, gas, or sol-
vent. Do not oil the element.
4. Rinse the element with clean water. Shake excess
water from the element and allow it to air dry.
5. After drying, check for damage by holding a light
inside the element. If an even, fine pattern of light
is seen, the element is clean and undamaged. A
bright spot of light indicates the element is dam-
aged and a new'element must be installed.
NOTE: The secondary element is not serviceable
and must be replaced with a new filter when re-
quired.
ENGINE VALVE CLEARANCE (LASH)
Correct valve clearance is important for good engine
performance.
Checking and Adjusting Valve Clearance: Check and
adjust the valves every 300 hours. See Figure 92.
The setting should be:
• Intake
0
014 in. go-0.016 in. no-go
(0.356 mm) (0.406 mm)
• Exhaust 0.017 in go-0.019 in. no-go
(0A32 mm) (0.483 mm)
BATTERY
Keep the battery connections tight and free of corrosion.
Use an amnonia or baking soda-water solution to wash
the outside surface and terminals of the battery. Make
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