ELECTRICALSYSTEM
Remove the spark plug after every 100 hours of operation for cleaning and checking the gap. When adjusting the gap, always bend the outer electrode. Never bend the insulator. If gap between the electrodes is too great, the engine will misifre and be hard to start.
Always use a spark plug wrench when removing or reinstalling the plug.
Be sure the gasket is in good condition, and screw plug in tightly. Do not tighten more than enough to compress the gasket to seat the plug and assure a good heat transfer between the plug and cylinder
head.
Replace defective plug with new plug. Use a Champion
International Harvester dealer for a correct re-
placement plug.
Cleaning Spark Plug
Clean spark plug with a pen knife or wire brush and solvent. If electrode is burned away or the porcelain is cracked, replace with new plug.
ENGINE COOLING
This is an air cooled engine. Air must circulate freely around the engine. Keep the cooling fins and housing area free of accumulated dirt and trash or engine will overheat and result in damage to moving parts.
OIL FOAM AIR CLEANER
Clean and
To clean the element, proceed asfollows:
NOTE: Do not use abrasive cleaning machine; because any grit introduced into the engine could cause severedamage.
Checking the spark plug gap.
Set gap
Remove the cover screws, lift the air cleaner cover and carefully remove the element to prevent dirt from entering the carburetor.
Wash the foam element in kerosene or liquid detergent and water to remove all dirt. Also clean the air cleaner body and cover.
Wrap the foam element in a cloth and squeeze dry. Then, saturate the element in engine oil
NOTE: Replace air cleaner mounting gaskets that are worn or damaged, to prevent dirt or dust entering engine through improper sealing.
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