Labels:text | screenshot | diagram | sketch | cartoon OCR: Paintbrush - 23AFOURC.PCX - File Edit View Text Pick Options Help 60. 5 2.3A FOUR CYCLE ENGINE ( 1 of 2 ) 1. INTAKE STROKE 2. COMPRESSION STROKE As the piston moves down the cylinder a vacuum is Both valves are closed as the piston created. As the intake valve opens atmospheric pres- moves up the cylinder highly com- sure pushes air through the carb. picking up fuel as pressing the air/fuel mixture. it enters the cylinder on top of the piston. The intake valve closes at the bottom of the stroke. ( PRESS ANY KEY - NEXT PAGE OR MAIN MENU )
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