1978 Johnson 55 HP Outboards Service Manual, Page 33Get this manual
UPPER HOUSING AND FUEL LINE ASSEMBL Y
The air inlet disc valve must seat tightly to prevent fumes from escaping the tank when the fuel hose is connected, but must allow air to enter the tankThe disc valve spring retainer is staked to the upper housing and may be removed by filing off the burrs if replacement is necessaryRestake with small punchHOSE AND PRIMER BULB ASSEMBLY CLAMPS To disassemble hose clamps, grip clamp with pliersBend overlapping hook backward (in direction of arrow) to release clampSee Figure 3-31
INDICATOR
Figure 3-29Fuel Tank Level Indicator gasoline or fumes from leaking out, but must open clear passage for air to enter the tank and for fuel to be drawn out when the fuel hose is connectedDirt may keep the release valves from seating properlyThe release valves are best cleaned by removing the core plugs and disassemblingReplace valve seats ("0" rings) to assure tight sealSee Figure 3-30Figure 3-31Removing Hose Clamps To assemble hose clamps, grip clamp firmly with pliersApply slight pressure to hook on top side with screwdriverSqueeze clamp with pliers until hooks interlockSee Figure 3-32