Tecumseh OHH50 - 65 Technician's Handbook page 24

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VALVE CLOSED
ATMOSPHERIC
VENT
VALVE OPEN
FUEL SUPPLY
CRANKCASE SUCTION AND
CRANKCASE PRESSURE
FLOW DIRECTION
ATMOSPHERIC PRESSURE ACTING
ON DAMPING DIAPHRAGM ATMOSPHERIC PRESSURE
FUEL FLOW ACTING ON DAMPING
DIAPHRAGM
CARBURETOR
FITTING
VALVE OPEN
DIAPHRAGM
FILTER
AIR BLEED
VALVE CLOSED
PULSE LINE
TO CRANKCASE
SUCTION FUEL FLOW DIRECTION
ATMOSPHERIC PRESSURE
CAUSED FUEL FLOW