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4. Clean with a steel brush. If the insulator is damaged, replace the spark plug.
5. Measure the spark plug clearance with a feeler gauge. The room should be 0.7-0.8 mm. If adjustment is necessary, carefully bend the side electrode.
6. Check that the spark plug gasket is in good condition and replace if necessary. Screw in the spark plug. If a new spark plug is used, screw it in by 1/2 turn
tighter. If a used spark plug is reinstalled, screw by1/ 8-1/4 turn.
A - spark plug
CAUTION:
The spark plug must be tightened securely, otherwise it may become very hot and damage the engine.
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Use only the recommended spark plug or a proper equivalent. Incorrect spark plug temperature range can damage the engine.
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ADJUSTING THE IDLE RUN
1. Start and warm the engine until it reaches normal operating temperature.
2. Manipulate the throttle adjusting screw. Standard idle operation: 1700 ± 150 rpm.
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