1999 "EE" Evinrude 200, 225 V6 FFI Outboards Service Repair Manual, P/N 787025, Page 50Get this manual

1999 "EE" Evinrude 200, 225 V6 FFI Outboards Service Repair Manual, P/N 787025, Page 50

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If vapor pressure increases due to hot fuel or high undercover temperatures, vapor volume expandsThe fuel level lowers, the float follows, and the vent valve opensVapor travels to the intake manifold,