1968 Evinrude Starflite 100 HP outboards Service Manual, Page 30Get this manual
NOTE If "0" ring is damaged air will enter fuel line
and carburetorMotor will run out of fuelTo remove the "0" ring from the connector, proceed as follows: aPlace the connector in vise between two wood blocksbPush the plunger down with the straight instrumentcInsert the hooked instrument between the "0" ring and its seat with the hook in flat or horizontal positionSee Figure 3-41
Figure 3-38Removing Hose Clamp
Figure 3-40"0" Ring Tools
Figure 3-39Attaching Hose Clamp