1978 Evinrude Outboards 9.9/15HP Service Manual, Page 29Get this manual
NOTE If "0" ring is damaged, air will enter fuel line
Figure 3-29Removing Hose Clamp To assemble hose clamps, grip clamp firmly with pliersApply slight pressure to hook on top side with screw driverSqueeze clamp with pliers until hooks interlockSee Figure 3-30
and carburetorMotor will run out of fuelTo remove the "0" ring from the connector, proceed as follows: aGrip the connector gently 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 3-32dTwist the hook around to grasp the "0" ring, then pull outTo install the "0" ring in the connector, proceed as follows: aPlace drop or two of oil on the "0" ringbPlace the "0" ring on face of the connectorcPush the plunger down with the straight instrumentdPinch the "0" ring together and gently push into position with fingers
PLUNGER
Figure 3-32Removing "0" Rings When reassembling the fuel hose, check for cracks in the primer bulb or in the hoseThe primer bulb must be attached so that fuel flow is from the shorter to the longer hose lengthFuel flow through the primer bulb is indicated by an arrowSee Figure 3-33