Model 1661529 engine end connector is a twist lock type, and Model 9689498 is a clip-on engine connector that fits a 5/16" fuel line. Model 1661578 is a tank end bayonet style for the older 6.6gal. fuel tank. 6543227 is a double sealed clip-on type disconnect for the fuel tank end that fits a 5/16" (8mm) ID fuel line.

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